{"id":3757,"date":"2023-08-04T11:00:00","date_gmt":"2023-08-04T02:00:00","guid":{"rendered":"https:\/\/media.value-domain.com\/?p=3757"},"modified":"2025-10-02T14:16:36","modified_gmt":"2025-10-02T05:16:36","slug":"spf-record","status":"publish","type":"post","link":"https:\/\/media.value-domain.com\/spf-record\/","title":{"rendered":"SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\uff1f\u66f8\u304d\u65b9\u30fb\u8a2d\u5b9a\u624b\u9806\u30fb\u78ba\u8a8d\u65b9\u6cd5\u3092\u5fb9\u5e95\u89e3\u8aac\uff01"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"632\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-1024x632.png\" alt=\"SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\uff1f\u66f8\u304d\u65b9\u30fb\u8a2d\u5b9a\u624b\u9806\u30fb\u78ba\u8a8d\u65b9\u6cd5\u3092\u5fb9\u5e95\u89e3\u8aac\uff01\" class=\"wp-image-11613\" srcset=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-1024x632.png 1024w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-300x185.png 300w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-768x474.png 768w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-530x327.png 530w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-565x349.png 565w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-710x439.png 710w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01-725x448.png 725w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2025\/10\/thumb_spf-record-01.png 1360w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" 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style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u4f55\u304b\u3001\u6b63\u3057\u3044\u66f8\u304d\u65b9\u3084\u8a2d\u5b9a\u624b\u9806\u3001\u78ba\u8a8d\u65b9\u6cd5\u307e\u3067\u521d\u5fc3\u8005\u306e\u65b9\u306b\u3082\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p><strong>\u30e1\u30fc\u30eb\u914d\u4fe1\u30c8\u30e9\u30d6\u30eb\u3092\u672a\u7136\u306b\u9632\u304e\u305f\u3044\u65b9\u306f\u3001\u305c\u3072\u6700\u5f8c\u307e\u3067\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3059\u3050\u306b\u77e5\u308a\u305f\u3044\u65b9\u306f\u300c<a href=\"#1\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\u30fb\u8a2d\u5b9a\u65b9\u6cd5<\/a>\u300d\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f<\/h2>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">SPF\uff08Sender Policy Framework\uff09\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u4e00\u3064\u3067\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u969b\u3001\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u30fc\u3068DNS\uff08Domain Name 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href=\"https:\/\/www.value-domain.com\/media\/dns\/\" data-type=\"link\" data-id=\"https:\/\/www.value-domain.com\/media\/dns\/\" target=\"_blank\" rel=\"noreferrer noopener\">DNS\u3068\u306f\u4f55\u304b\u3084\u8a2d\u5b9a\u65b9\u6cd5<\/a>\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u65b9\u306f\u3001\u3053\u3061\u3089\u306e\u8a18\u4e8b\u3082\u3042\u308f\u305b\u3066\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/dns\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.value-domain.com\/media\/not-receive-mail\/\" target=\"_blank\">\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u30fb\u53d7\u4fe1\u3057\u306a\u3044\u539f\u56e0\u3068\u89e3\u6c7a\u65b9\u6cd5<\/a>\u306b\u3064\u3044\u3066\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/not-receive-mail\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"544\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-1024x544.png\" alt=\"SPF\u30ec\u30b3\u30fc\u30c9\u306e\u4ed5\u7d44\u307f\" class=\"wp-image-3768\" srcset=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-1024x544.png 1024w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-300x159.png 300w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-768x408.png 768w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-530x281.png 530w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-565x300.png 565w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-710x377.png 710w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03-725x385.png 725w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/not_receive_mail_03.png 1300w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u4e0a\u8a18\u306e\u56f3\u89e3\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/span><\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u305f\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306b\u7d10\u3065\u3051\u3089\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u3068SPF\u30ec\u30b3\u30fc\u30c9\u306e\u60c5\u5831\u3092\u7167\u5408\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u78ba\u8a8d\u3055\u308c\u308b\u9805\u76ee\u306f\u3001\u4ee5\u4e0b\u306e2\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-border-block\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-border-block-content\" style=\"border:1px solid #808080;border-radius:0px;padding:0px 15px 0px 15px\">\n<ol>\n<li>\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306b\u767b\u9332\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9<\/li>\n\n\n\n<li>SPF\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3055\u308c\u305f\u9001\u4fe1\u8a31\u53efIP\u30a2\u30c9\u30ec\u30b9<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e2\u3064\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u81f4\u3057\u3066\u3044\u308c\u3070\u3001\u8a8d\u8a3c\u306f\u6210\u529f\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3064\u307e\u308a\u3001\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u304c\u6b63\u3057\u3044\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u3053\u3068\u3092\u8a3c\u660e\u3067\u304d\u3001<strong>\u76f8\u624b\u306e\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u6b63\u5e38\u306b\u5c4a\u304f\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059<\/strong>\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3067\u3001SPF\u30ec\u30b3\u30fc\u30c9\u304c\u767b\u9332\u3055\u308c\u3066\u3044\u306a\u304b\u3063\u305f\u308a\u3001\u8a2d\u5b9a\u306b\u8aa4\u308a\u304c\u3042\u308b\u3068\u3001<strong>\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u632f\u308a\u5206\u3051\u3089\u308c\u3066\u3057\u307e\u3046\u6050\u308c<\/strong>\u3082\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u5341\u5206\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u3068DKIM\/DMARC\u3068\u306e\u9055\u3044<\/h2>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3068\u4f3c\u305f\u4ed5\u7d44\u307f\u306b\u3001DKIM\u3084DMARC\u3068\u3044\u3046\u6280\u8853\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u3053\u308c\u3089\u306f\u3044\u305a\u308c\u3082\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u3084\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u306a\u3069\u306e\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u5bfe\u7b56\u3092\u76ee\u7684\u3068\u3057\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a8d\u8a3c\u6280\u8853\u3067\u3059\u304c\u3001\u305d\u308c\u305e\u308c\u306e\u6a5f\u80fd\u306b\u306f\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u6bd4\u8f03\u8868\u306b\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u7279\u5fb4\u3092\u6bd4\u8f03\u3057\u3066\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-scroll-block luxe-scrl\">\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u8a8d\u8a3c\u6280\u8853<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u4e3b\u306a\u5f79\u5272<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u52d5\u4f5c\u306e\u30a4\u30e1\u30fc\u30b8<\/th><\/tr><tr><th>SPF\u30ec\u30b3\u30fc\u30c9<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u306e\u6b63\u5f53\u6027\u3092\u78ba\u8a8d<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u8a31\u53ef\u3055\u308c\u305f\u4f4f\u6240\uff08IP\uff09\u304b\u3089\u9001\u3089\u308c\u305f\u304b\u3092\u30c1\u30a7\u30c3\u30af<\/td><\/tr><tr><th>DKIM<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u30e1\u30fc\u30eb\u5185\u5bb9\u306e\u6539\u3056\u3093\u304c\u306a\u3044\u304b\u3092\u78ba\u8a8d<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u9014\u4e2d\u3067\u5185\u5bb9\u304c\u66f8\u304d\u63db\u3048\u3089\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u8a3c<\/td><\/tr><tr><th>DMARC<\/th><td class=\"has-text-align-center\" data-align=\"center\">SPF\/DKIM\u306e\u7d50\u679c\u306b\u57fa\u3065\u304d\u51e6\u7406\u3092\u6c7a\u5b9a<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u3078\u306e\u5bfe\u5fdc\u3092\u6307\u793a\u3059\u308b\u30dd\u30ea\u30b7\u30fc<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<p>DKIM\uff08DomainKeys Identified Mail\uff09\u306f\u3001<strong>\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u304c\u9014\u4e2d\u3067\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u691c\u8a3c<\/strong>\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/p>\n\n\n\n<p>SPF\u304c\u300c\u9001\u4fe1\u8005\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u304c\u6b63\u3057\u3044\u304b\u300d\u3092\u5224\u5b9a\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001DKIM\u306f\u300c<strong>\u672c\u6587\u3084\u30d8\u30c3\u30c0\u30fc\u304c\u9001\u4fe1\u4e2d\u306b\u5909\u66f4\u3055\u308c\u3066\u3044\u306a\u3044\u304b<\/strong>\u300d\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3001DMARC\uff08Domain-based Message Authentication, Reporting, and Conformance\uff09\u306f\u3001SPF\u3068DKIM\u306e\u7d50\u679c\u3092\u3082\u3068\u306b\u3001<strong>\u4e0d\u6b63\u306a\u30e1\u30fc\u30eb\u3092\u3069\u306e\u3088\u3046\u306b\u51e6\u7406\u3059\u308b\u304b\u3092\u6307\u793a\u3059\u308b\u30dd\u30ea\u30b7\u30fc<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>DMARC\u306f\u3001SPF\u3068DKIM\u3068\u3044\u3046\u500b\u5225\u306e\u8a8d\u8a3c\u7d50\u679c\u3092\u7d71\u5408\u3057\u3001\u300c\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306f\u62d2\u5426\u3059\u308b\uff0f\u9694\u96e2\u3059\u308b\uff0f\u53d7\u4fe1\u3059\u308b\u300d\u3068\u3044\u3063\u305f<strong>\u5177\u4f53\u7684\u306a\u5bfe\u5fdc\u65b9\u91dd\u3092\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u5074\u306b\u4f1d\u3048\u308b\u7d71\u5236\u7684\u306a\u4ed5\u7d44\u307f<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>SPF\u3068DKIM\u304c\u500b\u5225\u306e\u8a8d\u8a3c\u65b9\u5f0f\u3067\u3042\u308b\u306e\u306b\u5bfe\u3057\u3001DMARC\u306f\u305d\u306e\u7d50\u679c\u3092\u6d3b\u7528\u3057\u3066\u6700\u7d42\u7684\u306a\u5bfe\u5fdc\u65b9\u91dd\u3092\u6c7a\u5b9a\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/dkim\/\" target=\"_blank\" rel=\"noreferrer noopener\">DKIM<\/a>\u3068<a href=\"https:\/\/www.value-domain.com\/media\/dmarc-about\/\" target=\"_blank\" rel=\"noreferrer noopener\">DMARC<\/a>\u306b\u95a2\u3059\u308b\u8a73\u3057\u3044\u4ed5\u7d44\u307f\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/dkim\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/dmarc-about\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u69cb\u6210\u8981\u7d20<\/h2>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u69cb\u6210\u8981\u7d20\u3068\u3057\u3066\u306f\u3001\u4ee5\u4e0b\u306e4\u3064\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u69cb\u6210\u8981\u7d20<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ol>\n<li>\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7<\/li>\n\n\n\n<li>\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09<\/li>\n\n\n\n<li>\u9650\u5b9a\u5b50<\/li>\n\n\n\n<li>\u4fee\u98fe\u5b50<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n<p>\u5c02\u9580\u7684\u306a\u5185\u5bb9\u306b\u306a\u308b\u306e\u3067\u3001\u6700\u521d\u306f\u300cSPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u3053\u3093\u306a\u69cb\u6210\u8981\u7d20\u3067\u3067\u304d\u3066\u3044\u308b\u3093\u3060\u3002\u300d\u7a0b\u5ea6\u306e\u7406\u89e3\u3067\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3060SPF\u30ec\u30b3\u30fc\u30c9\u304c\u3069\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u306f\u5fc5\u8981\u306a\u77e5\u8b58\u306e\u305f\u3081\u3001\u305d\u308c\u305e\u308c\u306e\u69cb\u6210\u8981\u7d20\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7<\/h3>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u306f\u3001\u300c\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u300d\u304b\u3089\u66f8\u304d\u59cb\u3081\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u306f\u3001<strong>\u5fc5\u305a\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u300cv=spf1\u300d\u304b\u3089\u59cb\u3081\u308b<\/strong>\u3068\u3044\u3046\u30eb\u30fc\u30eb\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u306fSPF\u306e\u4ed5\u69d8\u3067\u5b9a\u3081\u3089\u308c\u3066\u304a\u308a\u3001\u4ed6\u306e\u5f62\u5f0f\uff08\u4f8b\uff1a<code>v=spf1.0<\/code> \u3084 <code>v=spf2<\/code> \u306a\u3069\uff09\u3092\u4f7f\u3046\u3068\u3001<strong>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u6b63\u3057\u304f\u8a8d\u8b58\u3055\u308c\u305a\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3068\u306a\u308b<\/strong>\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u5225\u306a\u7406\u7531\u304c\u306a\u3044\u9650\u308a\u3001<strong>\u300cv=spf1\u300d\u3060\u3051\u3092\u4f7f\u7528\u3059\u308b\u306e\u304c\u539f\u5247<\/strong>\u3068\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001<strong><span style=\"background-color: #ffff99\" class=\"background-color\">\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\uff08\u4f8b\uff1a<code>v=spf1<\/code>\uff09\u306b\u7d9a\u3044\u3066\u3001\u300c\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u300d\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u3053\u306e\u300c\u6a5f\u69cb\u300d\u306b\u306f\u3001<strong>\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u60c5\u5831\u3084\u8a31\u53ef\u3059\u308b\u6761\u4ef6<\/strong>\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br>\u8907\u6570\u306e\u6a5f\u69cb\u3092\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001<strong>\u5de6\u304b\u3089\u9806\u756a\u306b\u8a55\u4fa1\u3055\u308c\u308b<\/strong>\u70b9\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306b\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u4e3b\u306a\u6a5f\u69cb\u306e\u7a2e\u985e\u3068\u610f\u5473\u3092\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n<table style=\"height: 256px\">\n<tbody>\n<tr style=\"height: 41px\">\n<th style=\"height: 41px;width: 104.938px\">\u6a5f\u69cb<\/th>\n<th style=\"width: 607.047px;height: 41px\">\u610f\u5473<\/th>\n<\/tr>\n<tr style=\"height: 41px\">\n<th style=\"height: 41px;width: 104.938px\">a<\/th>\n<td style=\"height: 41px;width: 607.047px\">\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u6307\u5b9a\u3059\u308b\u3002\u30c9\u30e1\u30a4\u30f3\u306e<a href=\"https:\/\/www.value-domain.com\/media\/a-record\/\" target=\"_blank\" rel=\"noopener\">A\u30ec\u30b3\u30fc\u30c9<\/a>\u3067IP\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u81f4\u3059\u308c\u3070\u8a8d\u8a3c\u3059\u308b\u3002<\/td>\n<\/tr>\n<tr style=\"height: 41px\">\n<th style=\"height: 41px;width: 104.938px\">include<\/th>\n<td style=\"height: 41px;width: 607.047px\">\u4ed6\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u6307\u5b9a\u3057\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u3088\u308b\u8a8d\u8a3c\u306b\u59d4\u4efb\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr style=\"height: 41px\">\n<th style=\"height: 41px;width: 104.938px\">mx<\/th>\n<td style=\"height: 41px;width: 607.047px\">\u30c9\u30e1\u30a4\u30f3\u306e<a href=\"https:\/\/www.value-domain.com\/media\/mx_record\/\" target=\"_blank\" rel=\"noopener\">MX\u30ec\u30b3\u30fc\u30c9<\/a>\uff08\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\uff09\u3067IP\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u81f4\u3059\u308c\u3070\u8a8d\u8a3c\u3059\u308b\u3002<\/td>\n<\/tr>\n<tr style=\"height: 41px\">\n<th style=\"height: 10px;width: 104.938px\">ptr<\/th>\n<td style=\"height: 10px;width: 607.047px\">\u6307\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306ePTR\u30ec\u30b3\u30fc\u30c9\uff08\u9006\u5f15\u304dDNS\uff09\u306b\u3088\u308a\u3001\u8a8d\u8a3c\u304c\u53ef\u80fd\u3067\u3042\u308c\u3070\u8a31\u53ef\u3055\u308c\u307e\u3059\u3002\u203b\u73fe\u5728\u306f\u975e\u63a8\u5968<\/td>\n<\/tr>\n<tr style=\"height: 41px\">\n<th style=\"height: 41px;width: 104.938px\">all<\/th>\n<td style=\"height: 41px;width: 607.047px\">\u3059\u3079\u3066\u306e\u9001\u4fe1\u5143\u3092\u5bfe\u8c61\u3068\u3057\u307e\u3059\u3002\u901a\u5e38\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306e\u672b\u5c3e\u306b\u8a18\u8ff0\u3055\u308c\u3001\u4ed6\u306e\u6a5f\u69cb\u306b\u30de\u30c3\u30c1\u3057\u306a\u3044\u5834\u5408\u306e\u6271\u3044\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr style=\"height: 41px\">\n<th style=\"height: 41px;width: 104.938px\">ip4\/ip6<\/th>\n<td style=\"height: 41px;width: 607.047px\">\u6307\u5b9a\u3055\u308c\u305fIPv4\u307e\u305f\u306fIPv6\u30a2\u30c9\u30ec\u30b9\u3068\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u81f4\u3059\u308c\u3070\u8a8d\u8a3c\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8907\u6570\u306e\u300c\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u300d\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u8a18\u8ff0\u3059\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"has-whitesmoke-background-color has-background\"><code>v=spf1 ip4:192.0.2.1 include:example.com mx -all<\/code><\/p>\n\n\n\n<p>\u66f8\u304d\u65b9\u306e\u5177\u4f53\u4f8b\u3084\u30d1\u30bf\u30fc\u30f3\u306b\u3064\u3044\u3066\u306f\u3001<strong>\u3053\u306e\u3042\u3068\u8a73\u3057\u304f\u3054\u7d39\u4ecb\u3057\u307e\u3059\u306e\u3067\u3001\u4f75\u305b\u3066\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9650\u5b9a\u5b50<\/h3>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">\u9650\u5b9a\u5b50\uff08\u30af\u30a9\u30ea\u30d5\u30a1\u30a4\u30a2\uff09\u3068\u306f\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306b\u304a\u3044\u3066\u3001<strong>\u8a8d\u8a3c\u51e6\u7406\u306e\u7d50\u679c\u306b\u5fdc\u3058\u3066\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u304c\u3069\u306e\u3088\u3046\u306b\u30e1\u30fc\u30eb\u3092\u6271\u3046\u304b\u3092\u5b9a\u7fa9\u3059\u308b\u8a18\u53f7<\/strong>\u3067\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u6a5f\u69cb\u306b\u3088\u3063\u3066\u7167\u5408\u304c\u78ba\u8a8d\u3067\u304d\u305f\u3068\u304d\u306b\u3001\u3069\u306e\u3088\u3046\u306a\u51e6\u7406\u3092\u884c\u3046\u306e\u304b\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5404\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u306e\u524d\u306b\u8a18\u8ff0\u3057\u3001\u7167\u5408\u304c\u6210\u529f\u3057\u305f\u5834\u5408\u306b\u3069\u306e\u3088\u3046\u306a\u52d5\u4f5c\u3092\u884c\u3046\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<br>\u305f\u3068\u3048\u3070\u3001\u540c\u3058IP\u30a2\u30c9\u30ec\u30b9\u3067\u3082\u3001\u9650\u5b9a\u5b50\u306e\u9055\u3044\u306b\u3088\u3063\u3066\u300c\u53d7\u4fe1\u3059\u308b\uff0f\u62d2\u5426\u3059\u308b\uff0f\u4e00\u5fdc\u53d7\u4fe1\u3059\u308b\u300d\u306a\u3069\u6319\u52d5\u304c\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u4f7f\u7528\u3055\u308c\u308b\u4e3b\u306a\u9650\u5b9a\u5b50\u306e\u7a2e\u985e\u306b\u3064\u3044\u3066\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u9650\u5b9a\u5b50<\/th><th>\u51e6\u7406\u5185\u5bb9<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><th><code>+<\/code>\uff08\u30d7\u30e9\u30b9\uff09<\/th><td>\u8a31\u53ef<\/td><td>\u6b63\u5e38\u306a\u30e1\u30fc\u30eb\u3068\u3057\u3066\u51e6\u7406\u3057\u307e\u3059\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u7701\u7565\u53ef\uff09<\/td><\/tr><tr><th><code>-<\/code>\uff08\u30de\u30a4\u30ca\u30b9\uff09<\/th><td>\u62d2\u5426<\/td><td>\u4e0d\u6b63\u306a\u30e1\u30fc\u30eb\u3068\u3057\u3066\u62d2\u5426\u3057\u307e\u3059\uff08Fail\uff09<\/td><\/tr><tr><th><code>~<\/code>\uff08\u30c1\u30eb\u30c0\uff09<\/th><td>\u30bd\u30d5\u30c8\u62d2\u5426<\/td><td>\u4e0d\u6b63\u306a\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u304c\u3001\u914d\u9001\u306f\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff08SoftFail\uff09<\/td><\/tr><tr><th><code>?<\/code>\uff08\u30af\u30a8\u30b9\u30c1\u30e7\u30f3\uff09<\/th><td>\u4e2d\u7acb<\/td><td>SPF\u306b\u3088\u308b\u6307\u5b9a\u306a\u3057\u3068\u3057\u3066\u6271\u308f\u308c\u3001\u7279\u306b\u5236\u9650\u306f\u304b\u304b\u308a\u307e\u305b\u3093\uff08Neutral\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u25bc\u3088\u304f\u4f7f\u308f\u308c\u308b\u8a18\u8ff0\u4f8b<\/p>\n\n\n\n<p class=\"has-whitesmoke-background-color has-background\"><code>v=spf1 ip4:192.0.2.1 -all<\/code><\/p>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u6307\u5b9a\u3057\u305fIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u9001\u4fe1\u306e\u307f\u3092\u8a31\u53ef\u3057\u3001<strong>\u305d\u308c\u4ee5\u5916\u304b\u3089\u306e\u9001\u4fe1\u306f\u3059\u3079\u3066\u62d2\u5426\u3059\u308b<\/strong>\u8a2d\u5b9a\u3067\u3059\uff08<code>-all<\/code>\uff09\u3002<\/p>\n\n\n\n<p>\u300c<code>+<\/code> \u300d\u306f\u7701\u7565\u53ef\u80fd\u306a\u305f\u3081\u3001\u300c<code>ip4:\u301c<\/code>\u300d \u306a\u3069\u3068\u3060\u3051\u66f8\u304b\u308c\u3066\u3044\u308b\u5834\u5408\u3082\u3001\u305d\u308c\u306f\u300c <code>+ip4:\u301c<\/code> \u300d\u3068\u540c\u3058\u610f\u5473\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u904b\u7528\u3067\u306f\u300c <code>-all<\/code>\u300d\uff08\u53b3\u683c\uff09\u3001\u300c<code>~all<\/code>\u300d\uff08\u7de9\u3081\uff09\u3092\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u4f7f\u3044\u5206\u3051\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u6319\u52d5\u306f\u3001SPF\u7d50\u679c\u3068\u305d\u306e\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4fee\u98fe\u5b50<\/h3>\n\n\n\n<p><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u4fee\u98fe\u5b50\uff08modifier\uff09\u3068\u306f\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306b\u304a\u3044\u3066\u3001<strong>\u3088\u308a\u8a73\u7d30\u306a\u5236\u5fa1\u3084\u88dc\u8db3\u60c5\u5831\u3092\u8ffd\u52a0\u3059\u308b\u305f\u3081\u306e\u8981\u7d20<\/strong>\u3067\u3059\u3002<\/mark><\/p>\n\n\n\n<p>\u4e3b\u306b\u3001\u8a8d\u8a3c\u7d50\u679c\u306b\u57fa\u3065\u304f\u8ffd\u52a0\u30a2\u30af\u30b7\u30e7\u30f3\u3084\u3001\u4ed6\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u53c2\u7167\u306a\u3069\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002SPF\u30ec\u30b3\u30fc\u30c9\u3067\u4e00\u822c\u7684\u306b\u5229\u7528\u3055\u308c\u308b\u4fee\u98fe\u5b50\u306f <code>redirect<\/code> \u3068 <code>exp<\/code> \u306e2\u7a2e\u985e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u4fee\u98fe\u5b50\u306f1\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u5185\u3067\u305d\u308c\u305e\u308c1\u56de\u305a\u3064\u4f7f\u7528\u3059\u308b\u306e\u304c\u63a8\u5968\u3055\u308c\u3066\u304a\u308a\u3001\u901a\u5e38\u306f\u30ec\u30b3\u30fc\u30c9\u306e\u6700\u5f8c\u306b\u8a18\u8ff0\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3088\u304f\u4f7f\u308f\u308c\u308b\u4fee\u98fe\u5b50\u4e00\u89a7\u3092\u4ee5\u4e0b\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u4fee\u98fe\u5b50<\/th><th>\u6a5f\u80fd<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><th>redirect<\/th><td>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/td><td>\u4ed6\u306e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u9069\u7528\u3057\u307e\u3059\u3002\u540c\u4e00\u30dd\u30ea\u30b7\u30fc\u3092\u8907\u6570\u30c9\u30e1\u30a4\u30f3\u306b\u9069\u7528\u3057\u305f\u3044\u5834\u5408\u306b\u4fbf\u5229\u3067\u3059\u3002<\/td><\/tr><tr><th>exp<\/th><td>\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u8868\u793a<\/td><td>SPF\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u3001\u6307\u5b9a\u3057\u305f\u8aac\u660e\u6587\u3092\u8fd4\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08\u4e3b\u306b\u8a3a\u65ad\u7528\uff09\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u25bc\u4f7f\u7528\u4f8b<\/p>\n\n\n\n<p class=\"has-whitesmoke-background-color has-background\">v=spf1 include:spf.example.com -all redirect=_spf.otherdomain.com<\/p>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u300c<code>_spf.otherdomain.com<\/code> \u300d\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3059\u308b\u3088\u3046\u6307\u793a\u3057\u3066\u3044\u307e\u3059\u3002<br>\u300c<code>-all<\/code> \u300d\u306a\u3069\u306e\u8a55\u4fa1\u7d50\u679c\u304c\u51fa\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u3001\u300c<code>redirect<\/code> \u300d\u304c\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#006edc;border:1px solid #006edc;padding:2px 14px;align-items:center\">\u6ce8\u610f\u70b9<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #006edc;padding:0px 15px 0px 15px\">\n\n<ul>\n\n<li>\u300c<code>redirect<\/code>\u300d \u3068\u300c<code>include<\/code>\u300d \u306f\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001<strong><code>include<\/code> \u306f\u90e8\u5206\u7684\u306a\u6761\u4ef6\u8ffd\u52a0\u3001<code>redirect<\/code> \u306f\u5b8c\u5168\u306a\u59d4\u4efb<\/strong>\u3068\u3044\u3046\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n\n\n<li>\u300c<code>exp<\/code> \u300d\u306f\u30a8\u30e9\u30fc\u6642\u306b\u4eba\u9593\u304c\u8aad\u3081\u308b\u8aac\u660e\u3092\u63d0\u4f9b\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3001<strong>\u5b9f\u969b\u306e\u30e1\u30fc\u30eb\u914d\u9001\u306b\u306f\u5f71\u97ff\u3057\u307e\u305b\u3093<\/strong>\u3002<\/li>\n\n<\/ul>\n\n<\/div><\/div>\n\n\n\n<p>\u4fee\u98fe\u5b50\u306f\u3042\u307e\u308a\u591a\u7528\u3055\u308c\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001<strong>\u8907\u6570\u30c9\u30e1\u30a4\u30f3\u3067\u7d71\u4e00\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3057\u305f\u3044\u5834\u5408<\/strong>\u3084\u3001<strong>SPF\u8a3a\u65ad\u3092\u660e\u78ba\u306b\u3057\u305f\u3044\u5834\u5408<\/strong>\u306b\u975e\u5e38\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6b63\u3057\u3044\u66f8\u304d\u65b9<\/h2>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6b63\u3057\u3044\u66f8\u304d\u65b9<\/mark><\/strong>\u306b\u3064\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u9805\u76ee\u306b\u5206\u3051\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6b63\u3057\u3044\u66f8\u304d\u65b9<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ul>\n<li>\u57fa\u672c\u7684\u306a\u8a18\u8ff0\u65b9\u6cd5<\/li>\n\n\n\n<li>FQDN\uff08\u30db\u30b9\u30c8\u540d\uff0b\u30c9\u30e1\u30a4\u30f3\u540d\uff09\u3092\u7528\u3044\u305f\u6307\u5b9a\u65b9\u6cd5<\/li>\n\n\n\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7bc4\u56f2\u3067\u306e\u6307\u5b9a\u65b9\u6cd5<\/li>\n\n\n\n<li>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3054\u3068\u306e\u500b\u5225\u8a2d\u5b9a<\/li>\n\n\n\n<li>\u8907\u6570\u306e\u9001\u4fe1\u5143\u30921\u3064\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u307e\u3068\u3081\u308b\u65b9\u6cd5<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u6700\u521d\u306b\u57fa\u672c\u7684\u306a\u8a18\u8ff0\u65b9\u6cd5\u3092\u793a\u3057\u3001\u305d\u306e\u5f8c\u306b\u4ee3\u8868\u7684\u306a\u8a2d\u5b9a\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u74b0\u5883\u306b\u5408\u308f\u305b\u3066\u8abf\u6574\u3059\u308b\u969b\u306e\u53c2\u8003\u8cc7\u6599\u3068\u3057\u3066\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6b63\u3057\u3044\u66f8\u304d\u65b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-border-block\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-border-block-content\" style=\"border:1px solid #808080;border-radius:0px;padding:0px 15px 0px 15px\">\n<p>\u30c9\u30e1\u30a4\u30f3 IN TXT \u3010\u30d0\u30fc\u30b8\u30e7\u30f3\u756a\u53f7\u3011\u3010\u9650\u5b9a\u5b50\u3011\u3010\u6a5f\u69cb\u3011\u3010IP\u30a2\u30c9\u30ec\u30b9\u3011<\/p>\n<\/div><\/div>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6b63\u3057\u3044\u66f8\u304d\u65b9\u306f\u3053\u306e\u5f62\u5f0f\u304c\u57fa\u672c\u3067\u3059\u304c\u3001\u3053\u308c\u3060\u3051\u3067\u306f\u5177\u4f53\u7684\u306a\u66f8\u304d\u65b9\u304c\u30a4\u30e1\u30fc\u30b8\u3057\u3065\u3089\u3044\u305f\u3081\u3001\u4ee5\u4e0b\u306b\u8a18\u8ff0\u4f8b\u3068\u8a73\u7d30\u306a\u89e3\u8aac\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>\u3007\u3007.com\u3000IN TXT v=spf1 ip4:172.16.0.1 -all<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u8a18\u8ff0\u306f\u3001<strong>\u300c\u3007\u3007.com\u300d\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u300c172.16.0.1\u300d\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306e\u307f\u3092\u8a8d\u8a3c\u3057\u3001\u305d\u308c\u4ee5\u5916\u306f\u3059\u3079\u3066\u62d2\u5426\u3059\u308b<\/strong>\u3068\u3044\u3046\u610f\u5473\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8ff0<\/th><th class=\"has-text-align-left\" data-align=\"left\">\u610f\u5473<\/th><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">example.com<\/td><td class=\"has-text-align-left\" data-align=\"left\">SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5bfe\u8c61\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IN TXT<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">v=spf1<\/td><td class=\"has-text-align-left\" data-align=\"left\">SPF\u30d0\u30fc\u30b8\u30e7\u30f31\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">ip4:172.16.0.1<\/td><td class=\"has-text-align-left\" data-align=\"left\">IPv4\u30a2\u30c9\u30ec\u30b9\u300c172.16.0.1\u300d\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">-all<\/td><td class=\"has-text-align-left\" data-align=\"left\">\u6307\u5b9a\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u4ee5\u5916\u304b\u3089\u306e\u9001\u4fe1\u306f\u3059\u3079\u3066\u62d2\u5426\u3055\u308c\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u5404\u8981\u7d20\u306e\u610f\u5473<\/figcaption><\/figure>\n\n\n\n<p>\u5b9f\u969b\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306b\u306f\u3001\u4e0a\u8a18\u306e\u8a18\u8ff0\u4f8b\u3092\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\uff11\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">FQDN\uff08\u30db\u30b9\u30c8\uff0b\u30c9\u30e1\u30a4\u30f3\u540d\uff09\u3067\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">IP\u30a2\u30c9\u30ec\u30b9\u3067\u306f\u306a\u304fFQDN\uff08\u30db\u30b9\u30c8\u540d\uff0b\u30c9\u30e1\u30a4\u30f3\u540d\uff09\u3067SPF\u30ec\u30b3\u30fc\u30c9\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408<\/mark><\/strong>\u3001DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">FQDN\u3092\u7528\u3044\u305fSPF\u30ec\u30b3\u30fc\u30c9\u306e\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>example.com IN TXT \"v=spf1 a:www.example.com ~all\"<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u8a2d\u5b9a\u306f\u3001<code>www.example.com<\/code> \u306eA\u30ec\u30b3\u30fc\u30c9\u306b\u767b\u9332\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5404\u8981\u7d20\u306e\u610f\u5473\u3092\u4e00\u89a7\u8868\u306b\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8ff0<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u610f\u5473<\/th><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">example.com<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5bfe\u8c61\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IN TXT<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">v=spf1<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30d0\u30fc\u30b8\u30e7\u30f31\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">a:www.example.com<\/td><td class=\"has-text-align-center\" data-align=\"center\">www.example.com\u306eA\u30ec\u30b3\u30fc\u30c9\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308bIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">~all<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u4e0a\u8a18\u4ee5\u5916\u306e\u3059\u3079\u3066\u306e\u9001\u4fe1\u5143\u306fSoftFail\uff08\u53d7\u4fe1\u306f\u53ef\u80fd\u3060\u304c\u8b66\u544a\uff09\u3068\u3057\u3066\u6271\u3046<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u5404\u8981\u7d20\u306e\u610f\u5473<\/figcaption><\/figure>\n\n\n\n<p><br>\u3053\u306e\u8a2d\u5b9a\u306f\u3001Web\u30b5\u30fc\u30d0\u30fc\u3068\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u540c\u4e00\u30db\u30b9\u30c8\uff08<a>www.example.com\uff09\u3067\u904b\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u6307\u5b9a\u3067\u306e\u66f8\u304d\u65b9\uff08CIDR\u5f62\u5f0f\uff09<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u62c5\u5f53\u3059\u308b\u30db\u30b9\u30c8\u304c\u5c5e\u3059\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3001CIDR\u5f62\u5f0f\u3067\u6307\u5b9a\u3059\u308b\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5358\u4f4d\u3067\u306eSPF\u30ec\u30b3\u30fc\u30c9\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>example.com IN TXT \"v=spf1 ip4:192.168.10.0\/28 ~all\"<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>192.168.10.0<\/code> \u304b\u3089 <code>192.168.10.15<\/code> \u307e\u3067\u306e <strong>16\u500b\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u8a31\u53ef\u3059\u308b<\/strong> \u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5404\u9805\u76ee\u306e\u610f\u5473\u3092\u4ee5\u4e0b\u306e\u4e00\u89a7\u8868\u306b\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8ff0<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u610f\u5473<\/th><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">example.com<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5bfe\u8c61\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IN TXT<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">v=spf1<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30d0\u30fc\u30b8\u30e7\u30f31\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">ip4:192.168.10.0\/28<\/td><td class=\"has-text-align-center\" data-align=\"center\">CIDR\u8868\u8a18\u3067\u3001192.168.10.0 \u304b\u3089 192.168.10.15 \u307e\u3067\u306e16\u500b\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3055\u308c\u308b\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">~all<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u4e0a\u8a18\u3067\u6307\u5b9a\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u7bc4\u56f2\u4ee5\u5916\u306e\u9001\u4fe1\u5143\u306f\u3001\u3059\u3079\u3066SoftFail\u3055\u308c\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3053\u306e\u8a2d\u5b9a\u306f\u3001\u500b\u3005\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u4e00\u3064\u305a\u3064\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u3001\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u540c\u3058\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5c5e\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u6709\u52b9\u306a\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u500b\u5225\u6307\u5b9a\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p>\u30e1\u30a4\u30f3\u30c9\u30e1\u30a4\u30f3\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3082\u3001<a href=\"https:\/\/www.value-domain.com\/media\/sub-domain\/\" data-type=\"link\" data-id=\"https:\/\/www.value-domain.com\/media\/sub-domain\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3<\/a>\u306b\u306f\u81ea\u52d5\u7684\u306b\u53cd\u6620\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001<strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u306f\u3001\u500b\u5225\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/mark><\/strong>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306f\u81ea\u52d5\u7684\u306b\u30e1\u30a4\u30f3\u306e\u8a2d\u5b9a\u3092\u7d99\u627f\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u30e1\u30a4\u30f3\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>example.com IN TXT \"v=spf1 ip4:192.168.10.1 -all\"<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>shop.example.com IN TXT \"v=spf1 ip4:192.168.10.2 -all\"<\/p>\n<\/div><\/div>\n\n\n\n<p>\u5404\u9805\u76ee\u306e\u610f\u5473\u306f\u3001\u4ee5\u4e0b\u306e\u4e00\u89a7\u8868\u306b\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8ff0<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u610f\u5473<\/th><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">example.com<br>shop.example.com<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5bfe\u8c61\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IN TXT<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">v=spf1<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30d0\u30fc\u30b8\u30e7\u30f31\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">ip4:192.168.10.1<br>ip4:192.168.10.2<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u30c9\u30e1\u30a4\u30f3\uff08\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\uff09\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">-all<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6307\u5b9a\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u4ee5\u5916\u304b\u3089\u306e\u9001\u4fe1\u306f\u3059\u3079\u3066\u62d2\u5426\u3055\u308c\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u5404\u8981\u7d20\u306e\u610f\u5473<\/figcaption><\/figure>\n\n\n\n<p>DNS\u306e\u4ed5\u7d44\u307f\u4e0a\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306f\u30e1\u30a4\u30f3\u30c9\u30e1\u30a4\u30f3\u3068\u306f\u5225\u306e\u8981\u7d20\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u30e1\u30fc\u30eb\u306f\u3001\u305d\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u8a2d\u5b9a\u3055\u308c\u305fSPF\u30ec\u30b3\u30fc\u30c9\u304c\u53c2\u7167\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u9069\u5207\u306aSPF\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u53d7\u4fe1\u5074\u3067\u30b9\u30d1\u30e0\u3068\u5224\u5b9a\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8907\u6570\u306e\u9001\u4fe1\u5143\u30921\u3064\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u307e\u3068\u3081\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\uff12\u3064\u4ee5\u4e0a\u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3059\u308b\u3068\u5fdc\u7b54\u306b\u3088\u3063\u3066\u9806\u5e8f\u304c\u5165\u308c\u66ff\u308f\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u610f\u56f3\u3068\u306f\u9055\u3046\u52d5\u4f5c\u304c\u8d77\u3053\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\u3048\u3070\u3001\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u305f\u3044\u5834\u5408\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px;align-items:center\">\u8aa4\u3063\u305f\u4f8b\uff08\u8907\u6570\u30ec\u30b3\u30fc\u30c9\u306b\u5206\u304b\u308c\u3066\u3044\u308b\uff09<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n\n<p>example.jp IN TXT \"v=spf1 ip4:172.16.0.1 ~all\"<\/p>\n\n\n<p>example.jp IN TXT \"v=spf1 ip4:172.16.0.2 ~all\"<\/p>\n\n<\/div><\/div>\n\n\n\n<p>\u4e0b\u8a18\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3059\u308c\u3070\u30a8\u30e9\u30fc\u306f\u8d77\u3053\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px;align-items:center\">\u6b63\u3057\u3044\u4f8b\uff081\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u307e\u3068\u3081\u308b\uff09<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n\n<p>example.jp IN TXT \"v=spf1 ip4:172.16.0.1 ip4:172.16.0.2 ~all\"<\/p>\n\n<\/div><\/div>\n\n\n\n<p>\u5404\u8a18\u8ff0\u306e\u610f\u5473\u306b\u3064\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u8868\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8ff0<\/th><th class=\"has-text-align-center\" data-align=\"center\">\u610f\u5473<\/th><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">example.jp<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u5bfe\u8c61\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">IN TXT<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">v=spf1<\/td><td class=\"has-text-align-center\" data-align=\"center\">SPF\u30d0\u30fc\u30b8\u30e7\u30f31\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">ip4:172.16.0.1<br>ip4:172.16.0.2<\/td><td class=\"has-text-align-center\" data-align=\"center\">IPv4\u30a2\u30c9\u30ec\u30b9\u306e\u300c172.16.0.1\u300d\u300c172.16.0.2\u300d\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3057\u307e\u3059\u3002<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">~all<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u4e0a\u8a18\u3067\u6307\u5b9a\u3055\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u4ee5\u5916\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3001SoftFail\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u5404\u8981\u7d20\u306e\u610f\u5473<\/figcaption><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u3082\u3057\uff11\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u305f\u3044\u5834\u5408\u306b\u306f\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306b\uff11\u884c\u3067\u307e\u3068\u3081\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/mark><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1\">SPF\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306f\u3001<strong>\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb<\/strong>\u307e\u305f\u306f<strong>Web\u30b5\u30fc\u30d3\u30b9<\/strong>\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">\u30c9\u30e1\u30a4\u30f3\u306bSPF\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>OS<\/th><th>\u624b\u9806<\/th><\/tr><\/thead><tbody><tr><th>Windows<\/th><td>\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u958b\u304d\u3001\u300cnslookup -type=TXT \u8abf\u3079\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u300d\u3092\u5165\u529b\u3057\u3066\u30a8\u30f3\u30bf\u30fc\u30ad\u30fc\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b<\/td><\/tr><tr><th>Mac<\/th><td>\u30bf\u30fc\u30df\u30ca\u30eb\u3092\u958b\u304d\u3001\u300cdig txt \u8abf\u3079\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u300d\u3092\u5165\u529b\u3057\u3066\u30a8\u30f3\u30bf\u30fc\u30ad\u30fc\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3067\u306e\u78ba\u8a8d\u65b9\u6cd5<\/figcaption><\/figure>\n\n\n\n<p>\u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u3084\u30bf\u30fc\u30df\u30ca\u30eb\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u5c11\u3057\u96e3\u3057\u3044\u3067\u3059\u304c\u3001\u4e0a\u8a18\u306e\u65b9\u6cd5\u3067SPF\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u51fa\u529b\u7d50\u679c\u306e\u4e2d\u306b <code>v=spf1 ~<\/code> \u306a\u3069\u306e\u6587\u5b57\u5217\u304c\u542b\u307e\u308c\u3066\u3044\u308c\u3070\u3001<strong>SPF\u30ec\u30b3\u30fc\u30c9\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059<\/strong>\u3002<br>\u9006\u306b\u3001\u3053\u306e\u8a18\u8ff0\u304c\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001<strong>SPF\u30ec\u30b3\u30fc\u30c9\u304c\u672a\u8a2d\u5b9a\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044<\/strong>\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30b3\u30de\u30f3\u30c9\u64cd\u4f5c\u306b\u6163\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u4ee5\u4e0b\u306b\u7d39\u4ecb\u3059\u308b<strong>Web\u4e0a\u306e\u7121\u6599\u30c4\u30fc\u30eb<\/strong>\u3092\u4f7f\u3048\u3070\u7c21\u5358\u306b\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u30d6\u30e9\u30a6\u30b6\u4e0a\u3067SPF\u30ec\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\u304c\u3067\u304d\u308b\u30b5\u30a4\u30c8<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ul>\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/www.skysnag.com\/ja\/spf-checker\/\" target=\"_blank\">SKYSNAG<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/powerdmarc.com\/ja\/spf-record-lookup\/\" target=\"_blank\" rel=\"noreferrer noopener\">PowerDMARC<\/a><\/li>\n\n\n\n<li><a rel=\"noreferrer noopener\" href=\"https:\/\/dmarcian.com\/spf-survey\/\" target=\"_blank\">dmarcian<\/a><\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u4f01\u696d\u3084\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3067\u306e\u30e1\u30fc\u30eb\u904b\u7528\u306b\u304a\u3044\u3066\u306f\u3001<strong>\u5b9a\u671f\u7684\u306a\u78ba\u8a8d\u3068\u898b\u76f4\u3057\u304c\u91cd\u8981<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>SPF\u3060\u3051\u3067\u306a\u304f\u3001<strong>DKIM\u3084DMARC\u3068\u306e\u9023\u643a\u78ba\u8a8d<\/strong>\u3082\u540c\u6642\u306b\u884c\u3046\u3068\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u3057\u3066\u3088\u308a\u52b9\u679c\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u9805\u76ee\u3067\u306fSPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p><strong>\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3057\u305f\u3044\u5834\u5408<\/strong>\u306f\u3001DNS\u8a2d\u5b9a\u753b\u9762\u304b\u3089\u8a72\u5f53\u30ec\u30b3\u30fc\u30c9\u3092\u7de8\u96c6\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>\u3053\u3053\u3067\u306f\u3001<strong>\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u3067\u306e\u8a2d\u5b9a\u5909\u66f4\u624b\u9806<\/strong>\u3092\u4f8b\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3059\u308b\u65b9\u6cd5<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ol>\n<li>\u300c\u30c9\u30e1\u30a4\u30f3\u300d\uff1e\u300c\u30c9\u30e1\u30a4\u30f3\u306e\u8a2d\u5b9a\u64cd\u4f5c\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b<\/li>\n\n\n\n<li>\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u6a2a\u306b\u3042\u308b\u300cDNS\/URL\u300d\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b<\/li>\n\n\n\n<li>\u8868\u793a\u3055\u308c\u305f\u753b\u9762\u306b\u300ctxt\u300d\u304b\u3089\u59cb\u307e\u308bSPF\u30ec\u30b3\u30fc\u30c9\u304c\u3042\u308b\u306e\u3092\u78ba\u8a8d\u3059\u308b<\/li>\n\n\n\n<li>\u8868\u793a\u3055\u308c\u305f\u300ctxt\u300d\u304b\u3089\u59cb\u307e\u308bSPF\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u3092\u4fee\u6b63\u3059\u308b<\/li>\n\n\n\n<li>\u300c\u4fdd\u5b58\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u8a2d\u5b9a\u5b8c\u4e86<\/li>\n<\/ol>\n<\/div><\/div>\n\n\n\n<p>\u4e0a\u8a18\u306e\u624b\u9806\u306b\u6cbf\u3063\u3066\u8a2d\u5b9a\u3092\u884c\u3048\u3070\u3001\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u5909\u66f4\u3092\u884c\u3046\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong><a id=\"vn_cta_lp_vd\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/www.value-domain.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3<\/a>\u306a\u3089\u3001\u7ba1\u7406\u753b\u9762\u304b\u3089\u30af\u30ea\u30c3\u30af\u64cd\u4f5c\u3060\u3051\u3067SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8ffd\u52a0\u30fb\u5909\u66f4\u304c\u53ef\u80fd\u3002<\/strong><br>\u5c02\u9580\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u3001\u30de\u30cb\u30e5\u30a2\u30eb\u901a\u308a\u306b\u9032\u3081\u308b\u3060\u3051\u3067\u7c21\u5358\u306b\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>DNS\u306e\u8a2d\u5b9a\u306b\u6163\u308c\u3066\u3044\u306a\u3044\u521d\u5fc3\u8005\u306e\u65b9\u3067\u3082\u5b89\u5fc3\u3057\u3066\u64cd\u4f5c\u3067\u304d\u308b\u306e\u304c\u3001<strong>\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306e\u5f37\u307f<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<a id=\"vn_cta_lp_vd\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/userguide.value-domain.com\/manual\/modspf\" target=\"_blank\" rel=\"noopener noreferrer\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u30de\u30cb\u30e5\u30a2\u30eb\u306f\u3053\u3061\u3089\uff08\u516c\u5f0f\u30ac\u30a4\u30c9\uff09\uff1e\uff1e<\/a>\n\n\n\n<div class=\"wp-block-luxe-blocks-border-block\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-border-block-content\" style=\"border:1px solid #006edc;border-radius:0px;padding:0px 15px 0px 15px\">\n<p>\u307e\u305a\u306f\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306e\u7ba1\u7406\u753b\u9762\u306b\u30ed\u30b0\u30a4\u30f3\u5f8c\u3001\u5de6\u30e1\u30cb\u30e5\u30fc\u306e\u300c\u30c9\u30e1\u30a4\u30f3\u300d\uff1e\u300c\u30c9\u30e1\u30a4\u30f3\u306e\u8a2d\u5b9a\u64cd\u4f5c\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"800\" height=\"430\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01.jpg\" alt=\"\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306eSPF\u8a2d\u5b9a\u624b\u9806\" class=\"wp-image-3764\" srcset=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01.jpg 800w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01-300x161.jpg 300w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01-768x413.jpg 768w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01-530x285.jpg 530w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01-565x304.jpg 565w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01-710x382.jpg 710w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img01-725x390.jpg 725w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<p>\u7d9a\u3044\u3066\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3057\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u306e\u6a2a\u306b\u3042\u308b\u300cDNS\/URL\u300d\u30a2\u30a4\u30b3\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"800\" height=\"437\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02.jpg\" alt=\"\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306eDNS\/URL\u30a2\u30a4\u30b3\u30f3\" class=\"wp-image-3760\" srcset=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02.jpg 800w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02-300x164.jpg 300w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02-768x420.jpg 768w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02-530x290.jpg 530w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02-565x309.jpg 565w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02-710x388.jpg 710w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img02-725x396.jpg 725w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<p>\u8868\u793a\u3055\u308c\u305f\u753b\u9762\u306b\u3001\u300ctxt\u300d\u304b\u3089\u59cb\u307e\u308bSPF\u30ec\u30b3\u30fc\u30c9\u304c\u8a18\u8ff0\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u78ba\u8a8d\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"800\" height=\"525\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03.jpg\" alt=\"\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u8a18\u8ff0\u753b\u9762\" class=\"wp-image-3761\" srcset=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03.jpg 800w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03-300x197.jpg 300w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03-768x504.jpg 768w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03-530x348.jpg 530w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03-565x371.jpg 565w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03-710x466.jpg 710w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img03-725x476.jpg 725w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div>\n\n\n<p>\u8868\u793a\u3055\u308c\u305fSPF\u30ec\u30b3\u30fc\u30c9\u3092\u5fc5\u8981\u304c\u3042\u308c\u3070\u4fee\u6b63\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u4fee\u6b63\u5f8c\u306b\u4e0b\u30b9\u30af\u30ed\u30fc\u30eb\u3057\u305f\u5148\u306b\u3042\u308b\u300c\u4fdd\u5b58\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u8a2d\u5b9a\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" loading=\"lazy\" width=\"800\" height=\"319\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04.jpg\" alt=\"\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306eDNS\u8a2d\u5b9a\u4fdd\u5b58\u30dc\u30bf\u30f3\" class=\"wp-image-3762\" srcset=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04.jpg 800w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04-300x120.jpg 300w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04-768x306.jpg 768w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04-530x211.jpg 530w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04-565x225.jpg 565w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04-710x283.jpg 710w, https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2023\/07\/spf-record-img04-725x289.jpg 725w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure><\/div><\/div><\/div>\n\n\n\n<a id=\"vn_cta_lp_vd\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/userguide.value-domain.com\/manual\/modspf\" target=\"_blank\" rel=\"noopener noreferrer\">\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u3059\u308b\u8a2d\u5b9a\u30de\u30cb\u30e5\u30a2\u30eb\u306f\u3053\u3061\u3089\uff1e\uff1e<\/a>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001\u30c6\u30b9\u30c8\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u306a\u3069\u3057\u3066\u6b63\u3057\u304f\u8a2d\u5b9a\u304c\u53cd\u6620\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/span><\/strong><\/p>\n\n\n\n<p>\u8a2d\u5b9a\u5909\u66f4\u5f8c\u306f\u3001<strong>\u53cd\u6620\u306b\u6700\u592724\u301c72\u6642\u9593\u7a0b\u5ea6\u304b\u304b\u308b\u5834\u5408<\/strong>\u304c\u3042\u308a\u307e\u3059\uff08DNS\u4f1d\u64ad\uff09<\/p>\n\n\n\n<p>\u3082\u3057\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u306a\u3069\u306e\u4e0d\u5177\u5408\u304c\u767a\u751f\u3059\u308b\u306e\u3067\u3042\u308c\u3070\u3001\u518d\u5ea6SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u3092\u3084\u308a\u76f4\u3059\u306a\u3069\u306e\u5bfe\u5fdc\u3092\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u3088\u304f\u3042\u308b\u9593\u9055\u3063\u305f\u66f8\u304d\u65b9<\/h2>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u9593\u9055\u3063\u305f\u66f8\u304d\u65b9<\/mark><\/strong>\u3068\u3057\u3066\u3001\u3088\u304f\u3042\u308b\u4f8b\u3092\u4ee5\u4e0b\u306b\u307e\u3068\u3081\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u3088\u304f\u3042\u308b\u9593\u9055\u3063\u305f\u66f8\u304d\u65b9<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ul>\n<li>\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u9593\u9055\u3063\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u304c\u7701\u7565\u3055\u308c\u3066\u3044\u308b<\/li>\n\n\n\n<li>1\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066SPF\u30ec\u30b3\u30fc\u30c9\u304c\u8907\u6570\u884c\u5b58\u5728\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u5fc5\u8981\u306a\u30b9\u30da\u30fc\u30b9\u304c\u629c\u3051\u3066\u3044\u308b<\/li>\n\n\n\n<li>redirect\u3084include\u306e\u53c2\u7167\u5148\u304c\u306a\u3044<\/li>\n\n\n\n<li>redirect\u3084include\u304c\u30eb\u30fc\u30d7\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u3092\u3059\u308b\u969b\u306b\u306f\u3001\u4e0a\u8a18\u306e\u9593\u9055\u3044\u3092\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u305d\u308c\u305e\u308c\u306e\u9805\u76ee\u306b\u3064\u3044\u3066\u30011\u3064\u305a\u3064\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u9593\u9055\u3063\u3066\u3044\u308b<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u6700\u3082\u591a\u3044\u8aa4\u308a\u306e\u3072\u3068\u3064\u306f\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u6307\u5b9a\u3092\u9593\u9055\u3048\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306f\u5fc5\u305a\u300cv=spf1\u300d\u3067\u59cb\u307e\u3089\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/mark><\/strong>\u3053\u306e\u8a18\u8ff0\u304c\u6b20\u3051\u3066\u3044\u305f\u308a\u8aa4\u3063\u3066\u3044\u305f\u5834\u5408\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306fSPF\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u8a8d\u8b58\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u8aa4\u3063\u305f\u30d0\u30fc\u30b8\u30e7\u30f3\u6307\u5b9a\u306e\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ul>\n<li>\u30d0\u30fc\u30b8\u30e7\u30f3\u6307\u5b9a\u304c\u306a\u3044<br>ip4:203.0.113.100 -all<\/li>\n\n\n\n<li>\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u6b63\u3057\u304f\u306a\u3044<br>v=spf2.0 ip4:203.0.113.100 -all<\/li>\n\n\n\n<li>\u30b9\u30da\u30eb\u3092\u8aa4\u3063\u3066\u3044\u308b\u4f8b<br>ve=spf1 ip4:203.0.113.100 -all<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u6b63\u3057\u3044\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 ip4:203.0.113.100 -all<\/p>\n<\/div><\/div>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u5192\u982d\u306b\u306f\u3001\u5fc5\u305a\u6b63\u78ba\u306b\u300cv=spf1\u300d\u3092\u8a18\u8f09\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u304c\u7701\u7565\u3055\u308c\u3066\u3044\u308b<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u3088\u304f\u3042\u308b\u8aa4\u308a\u306e\u4e00\u3064\u306b\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u5143\u3092\u8a31\u53ef\u3059\u308b\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u3092\u7701\u7565\u3057\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u6a5f\u69cb\u3092\u7701\u7565\u3059\u308b\u3068\u3001SPF\u30ec\u30b3\u30fc\u30c9\u304c\u4f55\u3092\u53c2\u7167\u3059\u3079\u304d\u304b\u5224\u65ad\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u6a5f\u69cb\u3092\u7701\u7565\u3057\u305f\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 -all<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u300c\u4f55\u3092\u8a31\u53ef\u3059\u308b\u60c5\u5831\u300d\u3082\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3089\u308c\u305f\u30e1\u30fc\u30eb\u3067\u3042\u3063\u3066\u3082\u3001\u53d7\u4fe1\u5074\u3067\u306f\u30b9\u30d1\u30e0\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3001\u307e\u305f\u306f\u5b8c\u5168\u306b\u62d2\u5426\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u6b63\u3057\u3044\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 ip4:203.0.113.100 -all<\/p>\n<\/div><\/div>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306f\u300c\u30d0\u30fc\u30b8\u30e7\u30f3\u300d\u300c\u8a31\u53ef\u5bfe\u8c61\u300d\u300c\u30c7\u30d5\u30a9\u30eb\u30c8\u30eb\u30fc\u30eb\u300d\u306e\u4e09\u8981\u7d20\u3092\u5099\u3048\u3066\u69cb\u6210\u3059\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066SPF\u30ec\u30b3\u30fc\u30c9\u304c\u8907\u6570\u884c\u5b58\u5728\u3057\u3066\u3044\u308b<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8aa4\u3063\u305f\u8a2d\u5b9a\u4f8b\u306e\u3072\u3068\u3064\u306b\u30011\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u3078\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3057\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306fSPF\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046\u969b\u3001\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u306eDNS\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u305d\u306e\u969b\u306b\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3059\u308b\u3068\u3001RFC7208\u3067\u5b9a\u3081\u3089\u308c\u305fSPF\u306e\u6a19\u6e96\u4ed5\u69d8\u306b\u9055\u53cd\u3059\u308b\u3068\u5224\u65ad\u3055\u308c\u3001\u300cPermError (Permanent Error)\u300d\u3092\u8fd4\u3057\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306f\u9001\u4fe1\u5143\u304c\u6b63\u5f53\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3067\u304d\u305a\u3001\u30e1\u30fc\u30eb\u3092\u30b9\u30d1\u30e0\u3068\u3057\u3066\u6271\u3046\u304b\u3001\u5b8c\u5168\u306b\u62d2\u5426\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u8aa4\u3063\u305f\u8a2d\u5b9a\u4f8b\uff08\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\uff09<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>example.com IN TXT \"v=spf1 ip4:203.0.113.100 -all\"<br>example.com IN TXT \"v=spf1 include:_spf.google.com ~all\"<\/p>\n<\/div><\/div>\n\n\n\n<p>\u4e0a\u8a18\u306e\u4f8b\u3067\u306f\u300cexample.com\u300d\u306b\u5bfe\u3057\u30662\u3064\u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c\u767b\u9332\u3055\u308c\u3066\u304a\u308a\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306f\u3069\u3061\u3089\u3092\u63a1\u7528\u3059\u3079\u304d\u304b\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u6b63\u3057\u3044\u8a2d\u5b9a\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>example.com IN TXT \"v=spf1 ip4:203.0.113.100 include:_spf.google.com ~all\"<\/p>\n<\/div><\/div>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306f1\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u5185\u306b\u300cinclude\u300d\u3084\u300cip4\u300d\u306a\u3069\u306e\u6a5f\u69cb\uff08\u30e1\u30ab\u30cb\u30ba\u30e0\uff09\u3092\u4e26\u3079\u3066\u8a18\u8ff0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5fc5\u8981\u306a\u30b9\u30da\u30fc\u30b9\u304c\u629c\u3051\u3066\u3044\u308b<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u3088\u304f\u898b\u3089\u308c\u308b\u8aa4\u308a\u306e\u4e00\u3064\u306b\u3001\u5fc5\u8981\u306a\u30b9\u30da\u30fc\u30b9\u3092\u7701\u7565\u3057\u3066\u3057\u307e\u3046\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u30d0\u30fc\u30b8\u30e7\u30f3\u3001\u6a5f\u69cb\u3001\u4fee\u98fe\u5b50\u3068\u3044\u3063\u305f\u5404\u8981\u7d20\u306f\u3001\u5fc5\u305a\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3067\u533a\u5207\u3089\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>\u30b9\u30da\u30fc\u30b9\u304c\u629c\u3051\u3066\u3044\u308b\u3068\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306f\u305d\u306e\u90e8\u5206\u3092\u4e00\u3064\u306e\u9577\u3044\u6587\u5b57\u5217\u3068\u3057\u3066\u8a8d\u8b58\u3057\u3001\u69cb\u6587\u3092\u6b63\u3057\u304f\u89e3\u6790\u3067\u304d\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u7d50\u679c\u3001\u300cPermError (Permanent Error)\u300d\u306e\u30a8\u30e9\u30fc\u304c\u8fd4\u3055\u308c\u3001\u30e1\u30fc\u30eb\u306f\u30b9\u30d1\u30e0\u3068\u3057\u3066\u6271\u308f\u308c\u308b\u3001\u307e\u305f\u306f\u53d7\u4fe1\u62d2\u5426\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u8aa4\u3063\u305f\u8a18\u8ff0\u4f8b\uff08\u30b9\u30da\u30fc\u30b9\u4e0d\u8db3\uff09<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1ip4:203.0.113.100-all<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u6b63\u3057\u3044\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 ip4:203.0.113.100 -all<\/p>\n<\/div><\/div>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u5404\u8981\u7d20\u306e\u9593\u306f\u3001\u5fc5\u305a\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u3067\u533a\u5207\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">include\u3084redirect\u306e\u53c2\u7167\u5148\u304c\u306a\u3044<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u3088\u304f\u898b\u3089\u308c\u308b\u8aa4\u308a\u306e\u4e00\u3064\u306b\u3001\u300cinclude\u300d\u3084\u300credirect\u300d\u3067\u6307\u5b9a\u3057\u305f\u53c2\u7167\u5148\u304c\u6709\u52b9\u306aSPF\u30ec\u30b3\u30fc\u30c9\u3092\u6301\u3063\u3066\u3044\u306a\u3044\u3001\u3042\u308b\u3044\u306f\u30c9\u30e1\u30a4\u30f3\u81ea\u4f53\u304c\u5b58\u5728\u3057\u306a\u3044\u30b1\u30fc\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>include<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u6307\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306e\u5185\u5bb9\u3092\u53d6\u308a\u8fbc\u3093\u3067\u3001\u73fe\u5728\u306e\u30ec\u30b3\u30fc\u30c9\u306e\u4e00\u90e8\u3068\u3057\u3066\u8a55\u4fa1\u3059\u308b\u3002<\/td><\/tr><tr><th>redirect<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u6307\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u4ee3\u308f\u308a\u306b\u53c2\u7167\u3059\u308b\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">\u300cinclude\u300d\u3084\u300credirect\u300d\u3067\u6307\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306bSPF\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3057\u306a\u3044\u3001\u307e\u305f\u306f\u30c9\u30e1\u30a4\u30f3\u81ea\u4f53\u304c\u7121\u52b9\u306a\u5834\u5408\u3001SPF\u306e\u8a55\u4fa1\u306f\u5931\u6557\u3057\u300cPermError (Permanent Error)\u300d\u306e\u30a8\u30e9\u30fc\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u8aa4\u3063\u305f\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 include:nonexistent-domain.com ~all<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001\u67b6\u7a7a\u306e\u30c9\u30e1\u30a4\u30f3\u300cnonexistent-domain.com\u300d\u3092\u53c2\u7167\u3057\u3066\u304a\u308a\u3001SPF\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3057\u306a\u3044\u305f\u3081SPF\u30c1\u30a7\u30c3\u30af\u306f\u5931\u6557\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u6b63\u3057\u3044\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 include:_spf.google.com ~all<\/p>\n<\/div><\/div>\n\n\n\n<p>\u3053\u3061\u3089\u306f\u3001Google\u304c\u7ba1\u7406\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u300c_spf.google.com\u300d\u3092\u53c2\u7167\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306b\u306f\u3001\u300cinclude\u300d\u3084\u300credirect\u300d\u3067\u6307\u5b9a\u3057\u305f\u53c2\u7167\u5148\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u5fc5\u305a\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">include\u3084redirect\u304c\u30eb\u30fc\u30d7\u3057\u3066\u3044\u308b<\/h3>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3067\u300cinclude\u300d\u3084\u300credirect\u300d\u3092\u4f7f\u7528\u3059\u308b\u969b\u3001\u53c2\u7167\u304c\u7121\u9650\u30eb\u30fc\u30d7\u306b\u9665\u308b\u306e\u306fSPF\u30c1\u30a7\u30c3\u30af\u306e\u5931\u6557\u306b\u3064\u306a\u304c\u308b\u8aa4\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u300cinclude\u300d\u3084\u300credirect\u300d\u3092\u5229\u7528\u3059\u308b\u3068\u4ed6\u306e\u30c9\u30e1\u30a4\u30f3\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3067\u304d\u307e\u3059\u304c\u3001\u53c2\u7167\u5148\u304c\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u518d\u53c2\u7167\u3059\u308b\u3088\u3046\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u8a55\u4fa1\u304c\u6c38\u4e45\u306b\u7e70\u308a\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">\u30eb\u30fc\u30d7\u304c\u767a\u751f\u3059\u308b\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ul>\n<li>example.jp \u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c redirect=example.com \u3092\u6307\u5b9a<\/li>\n\n\n\n<li>example.com \u306eSPF\u30ec\u30b3\u30fc\u30c9\u304c redirect=example.jp \u3092\u6307\u5b9a<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u3053\u306e\u8a2d\u5b9a\u3067\u306f\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u304c\u300cexample.jp\u300d\u306eSPF\u3092\u8a55\u4fa1\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u300cexample.com\u300d\u3092\u53c2\u7167\u3057\u3001\u3055\u3089\u306b\u300cexample.com\u300d\u3092\u8a55\u4fa1\u3059\u308b\u3068\u518d\u3073\u300cexample.jp\u300d\u306b\u623b\u308b\u30eb\u30fc\u30d7\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u306e\u4ed5\u69d8\u3067\u306f\u3001\u300cinclude\u300d\u3084\u300credirect\u300d\u306e\u3088\u3046\u306bDNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u4f34\u3046\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u56de\u6570\u3092\u6700\u592710\u56de\u307e\u3067\u3068\u53b3\u3057\u304f\u5236\u9650\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u8d85\u3048\u308b\u3068\u300cPermError (Permanent Error)\u300d\u306e\u30a8\u30e9\u30fc\u3067\u5931\u6557\u3057\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u969b\u306b\u306f\u3001\u300cinclude\u300d\u3084\u300credirect\u300d\u306e\u53c2\u7167\u5148\u304c\u81ea\u8eab\u306e\u30c9\u30e1\u30a4\u30f3\u3084\u65e2\u306b\u53c2\u7167\u3057\u3066\u3044\u308b\u4ed6\u306e\u30c9\u30e1\u30a4\u30f3\u3078\u623b\u3089\u306a\u3044\u3088\u3046\u3001\u5fc5\u305a\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u3059\u308bQ\uff06A<\/h2>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u3001\u3088\u304f\u3042\u308b\u8cea\u554f<\/mark><\/strong>\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">SPF\u30ec\u30b3\u30fc\u30c9\u306b\u95a2\u3059\u308bQ\uff06A<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<ul>\n<li>Gmail\u3078\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u304d\u306eSPF\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u65b9\u6cd5\u306f\uff1f<\/li>\n\n\n\n<li>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6587\u6cd5\u3092\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b\u30b5\u30a4\u30c8\u306f\uff1f<\/li>\n\n\n\n<li>SPF\u30ec\u30b3\u30fc\u30c9\u306e -all \u3068 ~all\u306e\u9055\u3044\u306f\uff1f<\/li>\n\n\n\n<li>TXT\u30ec\u30b3\u30fc\u30c9\u3068SPF\u30ec\u30b3\u30fc\u30c9\u306e\u9055\u3044\u306f\uff1f<\/li>\n\n\n\n<li>SPF\u30ec\u30b3\u30fc\u30c9\u3068MX\u30ec\u30b3\u30fc\u30c9\u306e\u9055\u3044\u306f\uff1f<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u3001\u305d\u308c\u305e\u308c\u306e\u7591\u554f\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Gmail\u3078\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u304d\u306eSPF\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u65b9\u6cd5\u306f\uff1f<\/h3>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">Gmail\u3078\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u304c\u5c4a\u304b\u306a\u3044\u3068\u3044\u3046\u554f\u984c\u3092\u62b1\u3048\u3066\u3044\u308b\u306e\u3067\u3042\u308c\u3070\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3057\u3066\u3044\u306a\u3044\u3068\u3001Gmail\u5074\u3067\u300c\u3053\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3068\u5224\u65ad\u3055\u308c\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote\">\n<p>2022 \u5e74 11 \u6708\u4ee5\u964d\u3001\u500b\u4eba\u7528 Gmail \u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u65b0\u898f\u306e\u9001\u4fe1\u8005\u306f\u3001SPF \u307e\u305f\u306f DKIM \u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002Google \u3067\u306f\u3001\u65b0\u898f\u306e\u9001\u4fe1\u8005\u304b\u3089\u500b\u4eba\u7528 Gmail \u30a2\u30ab\u30a6\u30f3\u30c8\u5b9b\u3066\u306e\u30e1\u30fc\u30eb\u3092\u30e9\u30f3\u30c0\u30e0\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u8a8d\u8a3c\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u8a8d\u8a3c\u65b9\u6cd5\u304c\u4e00\u3064\u3082\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u306f\u30015.7.26 \u30a8\u30e9\u30fc\u3067\u62d2\u5426\u3055\u308c\u308b\u304b\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n<cite><a href=\"https:\/\/support.google.com\/a\/answer\/33786?hl=ja&amp;ref_topic=10685331&amp;sjid=9159101530199754697-AP\" target=\"_blank\" rel=\"noreferrer noopener\">Google Workspace \u7ba1\u7406\u8005\u30d8\u30eb\u30d7<\/a><\/cite><\/blockquote>\n\n\n\n<p>Google Workspace\u306e\u30d8\u30eb\u30d7\u30da\u30fc\u30b8\u306b\u3082\u4e0a\u8a18\u306e\u3088\u3046\u306a\u8868\u8a18\u304c\u3042\u308a\u3001SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u3068\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5206\u985e\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>Gmail\uff08Google Workspace\uff09\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">Gmail\uff08Google Workspace\uff09\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 include:_spf.google.com ~all<\/p>\n<\/div><\/div>\n\n\n\n<p>\u307e\u305f\u3001Gmail\u3068\u81ea\u793e\u30b5\u30fc\u30d0\u30fc\u306e\u4e21\u65b9\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u3001\u4e21\u65b9\u306e\u9001\u4fe1\u5143\u30921\u3064\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-topic\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-topic-title\" style=\"color:#fff;background-color:#000080;border:1px solid #000080;padding:2px 14px\">Gmail\u3068\u81ea\u793e\u30b5\u30fc\u30d0\u30fc\u306e\u4e21\u65b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u8a18\u8ff0\u4f8b<\/div><div class=\"wp-block-luxe-blocks-topic-content\" style=\"border:1px solid #000080;padding:0px 15px 0px 15px\">\n<p>v=spf1 include:_spf.google.com ip4:203.0.113.100 ~all<\/p>\n<\/div><\/div>\n\n\n\n<p>\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u3092\u4f8b\u306b<a href=\"#1\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\u30fb\u8a2d\u5b9a\u65b9\u6cd5<\/a>\u3092\u89e3\u8aac\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u3053\u3061\u3089\u3092\u53c2\u8003\u306b\u8a2d\u5b9a\u3092\u884c\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><a rel=\"noreferrer noopener\" href=\"https:\/\/www.value-domain.com\/media\/gmail-not-reach\/\" data-type=\"link\" data-id=\"https:\/\/www.value-domain.com\/media\/gmail-not-reach\/\" target=\"_blank\">Gmail\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3084\u89e3\u6c7a\u65b9\u6cd5<\/a>\u306b\u3064\u3044\u3066\u3001\u4e0b\u8a18\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u3042\u308f\u305b\u3066\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/gmail-not-reach\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6587\u6cd5\u3092\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b\u30b5\u30a4\u30c8\u306f\uff1f<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6587\u6cd5\u3092\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b\u30b5\u30a4\u30c8<\/mark><\/strong>\u306f\u3001\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"has-lightyellow-background-color has-background\">\n<li><a href=\"https:\/\/mxtoolbox.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">MX Toolbox<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/vamsoft.com\/support\/tools\/spf-syntax-validator\" target=\"_blank\" rel=\"noreferrer noopener\">vamsoft.com<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/dmarcian.com\/spf-survey\/\" target=\"_blank\" rel=\"noreferrer noopener\">dmarcian.com<\/a><\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30b5\u30a4\u30c8\u3067\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067SPF\u30ec\u30b3\u30fc\u30c9\u306e\u6709\u52b9\u6027\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u69cb\u6587\u30a8\u30e9\u30fc\u3084DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u56de\u6570\u8d85\u904e\u306a\u3069\u306e\u554f\u984c\u3092\u6307\u6458\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>DNS\u3078\u306e\u767b\u9332\u524d\u3084\u3001\u767b\u9332\u5f8c\u306eSPF\u30ec\u30b3\u30fc\u30c9\u306b\u9593\u9055\u3044\u304c\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3059\u308b\u969b\u306b\u306f\u3001\u4e0a\u8a18\u306e\u30b5\u30a4\u30c8\u3092\u5229\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u306e -all \u3068 ~all\u306e\u9055\u3044\u306f\uff1f<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u300c-all\u300d\u3068\u300c~all\u300d\u306e\u9055\u3044<\/mark><\/strong>\u3092\u4ee5\u4e0b\u306e\u6bd4\u8f03\u8868\u306b\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-scroll-block luxe-scrl\">\n<figure class=\"wp-block-table\"><table><tbody><tr><th><\/th><th class=\"has-text-align-center\" data-align=\"center\">-all(Fail)<\/th><th class=\"has-text-align-center\" data-align=\"center\">~all(SoftFail)<\/th><\/tr><tr><th>\u30dd\u30ea\u30b7\u30fc<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u53b3\u683c<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6bd4\u8f03\u7684\u7de9\u3084\u304b<\/td><\/tr><tr><th>\u52d5\u4f5c<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8f09\u5916\u306e\u9001\u4fe1\u5143\u3092\u62d2\u5426\u3059\u308b<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u8a18\u8f09\u5916\u306e\u9001\u4fe1\u5143\u3092\u30b9\u30d1\u30e0\u3068\u3057\u3066\u6271\u3046<\/td><\/tr><tr><th>\u5b89\u5168\u6027<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u9ad8\u3044<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6bd4\u8f03\u7684\u4f4e\u3044<\/td><\/tr><tr><th>\u30ea\u30b9\u30af<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u3082\u62d2\u5426\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u3082\u30b9\u30d1\u30e0\u3068\u5224\u65ad\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<p>\u300c-all\u300d\u3068\u300c~all\u300d\u306f\u3044\u305a\u308c\u3082\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u306a\u3044\u9001\u4fe1\u5143\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3092\u3069\u306e\u3088\u3046\u306b\u6271\u3046\u304b\u3092\u5b9a\u7fa9\u3059\u308b\u30c7\u30d5\u30a9\u30eb\u30c8\u30dd\u30ea\u30b7\u30fc\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u300c-all\uff08Fail\uff09\u300d\u306f\u6700\u3082\u53b3\u683c\u306a\u65b9\u5f0f\u3067\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306b\u542b\u307e\u308c\u306a\u3044\u9001\u4fe1\u5143\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u660e\u78ba\u306b\u62d2\u5426\u3055\u308c\u307e\u3059\u3002\u306a\u308a\u3059\u307e\u3057\u3092\u5f37\u529b\u306b\u9632\u6b62\u3067\u304d\u307e\u3059\u304c\u3001\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u304c\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc\u306a\u3069\u3067SPF\u30c1\u30a7\u30c3\u30af\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u53d7\u4fe1\u8005\u306b\u5c4a\u304b\u306a\u304f\u306a\u308b\u304a\u305d\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u300c~all\uff08SoftFail\uff09\u300d\u306f\u300c\u30b9\u30d1\u30e0\u3068\u3057\u3066\u51e6\u7406\u3059\u308b\u300d\u3053\u3068\u3092\u610f\u5473\u3057\u3001SPF\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u306a\u3044\u9001\u4fe1\u5143\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306b\u3088\u3063\u3066\u7591\u308f\u3057\u3044\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u521d\u671f\u6bb5\u968e\u3067\u306f\u300c~all\u300d\u3092\u8a2d\u5b9a\u3057\u3066\u72b6\u6cc1\u3092\u78ba\u8a8d\u3057\u3001\u9001\u4fe1\u5143\u306e\u74b0\u5883\u304c\u628a\u63e1\u3067\u304d\u305f\u6bb5\u968e\u3067\u300c-all\u300d\u306b\u79fb\u884c\u3059\u308b\u306e\u304c\u671b\u307e\u3057\u3044\u904b\u7528\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">TXT\u30ec\u30b3\u30fc\u30c9\u3068SPF\u30ec\u30b3\u30fc\u30c9\u306e\u9055\u3044\u306f\uff1f<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">TXT\u30ec\u30b3\u30fc\u30c9\u3068SPF\u30ec\u30b3\u30fc\u30c9\u306e\u9055\u3044<\/mark><\/strong>\u3092\u4ee5\u4e0b\u306e\u6bd4\u8f03\u8868\u306b\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>TXT\u30ec\u30b3\u30fc\u30c9<\/th><td>DNS\u30ec\u30b3\u30fc\u30c9\u306e\u4e00\u7a2e\u3002<br>\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u9023\u4ed8\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u81ea\u7531\u306a\u30c6\u30ad\u30b9\u30c8\u60c5\u5831\u3092\u683c\u7d0d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u3002<\/td><\/tr><tr><th>SPF\u30ec\u30b3\u30fc\u30c9<\/th><td>TXT\u30ec\u30b3\u30fc\u30c9\u306e\u4e2d\u306b\u5165\u308c\u308b\u7279\u5b9a\u306e\u60c5\u5831\u3002<br>\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u3050\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u3001\u7279\u5225\u306a\u5f62\u5f0f\u306e\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>TXT\u30ec\u30b3\u30fc\u30c9\u306f\u300c\u7bb1\u300d\u306b\u4f8b\u3048\u3089\u308c\u308b\u5165\u308c\u7269\u3067\u3001\u305d\u306e\u4e2d\u306b\u30e1\u30fc\u30eb\u8a8d\u8a3c\u60c5\u5831\u3084\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u6240\u6709\u6a29\u78ba\u8a8d\u30b3\u30fc\u30c9\u306a\u3069\u3092\u683c\u7d0d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306fTXT\u30ec\u30b3\u30fc\u30c9\u5185\u306b\u542b\u3081\u308b\u5185\u5bb9\u3067\u3042\u308a\u3001\u30e1\u30fc\u30eb\u8a8d\u8a3c\u5c02\u7528\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306f\u5fc5\u305aTXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u308b\u305f\u3081\u3001\u3053\u306e\u95a2\u4fc2\u3092\u3042\u308f\u305b\u3066\u7406\u89e3\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">SPF\u30ec\u30b3\u30fc\u30c9\u3068MX\u30ec\u30b3\u30fc\u30c9\u306e\u9055\u3044\u306f\uff1f<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\u30ec\u30b3\u30fc\u30c9\u3068MX\u30ec\u30b3\u30fc\u30c9\u306f\u3044\u305a\u308c\u3082\u30e1\u30fc\u30eb\u95a2\u9023\u306eDNS\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u304c\u3001\u305d\u308c\u305e\u308c\u5f79\u5272\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-scroll-block luxe-scrl\">\n<figure class=\"wp-block-table\"><table><tbody><tr><th><\/th><th class=\"has-text-align-center\" data-align=\"center\">MX\u30ec\u30b3\u30fc\u30c9<\/th><th class=\"has-text-align-center\" data-align=\"center\">SPF\u30ec\u30b3\u30fc\u30c9<\/th><\/tr><tr><th>\u5f79\u5272<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u5834\u6240\u3092\u6307\u5b9a\u3059\u308b<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u3092\u8a8d\u8a3c\u3059\u308b<\/td><\/tr><tr><th>\u76ee\u7684<\/th><td class=\"has-text-align-center\" data-align=\"center\">\u30e1\u30fc\u30eb\u3092\u6b63\u3057\u304f\u9001\u4fe1\u3059\u308b<\/td><td class=\"has-text-align-center\" data-align=\"center\">\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u9632\u6b62\u3059\u308b<\/td><\/tr><tr><th>\u5f62\u5f0f<\/th><td class=\"has-text-align-center\" data-align=\"center\">mail.example.com\u306a\u3069\u306e\u30db\u30b9\u30c8\u540d<\/td><td class=\"has-text-align-center\" data-align=\"center\">v=spf1 ...\u3068\u3044\u3046\u7279\u5b9a\u306e\u69cb\u6587<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n\n<p>MX\u30ec\u30b3\u30fc\u30c9 (Mail Exchanger Record) \u306f\u3001\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u5148\u3092\u793a\u3059\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u5b9b\u306e\u30e1\u30fc\u30eb\u304c\u3069\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u308b\u304b\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u9001\u4fe1\u5074\u306e\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u6700\u521d\u306bMX\u30ec\u30b3\u30fc\u30c9\u3092\u53c2\u7167\u3057\u3066\u76f8\u624b\u306e\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u3092\u7279\u5b9a\u3057\u3001\u30e1\u30fc\u30eb\u3092\u914d\u9001\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9 (Sender Policy Framework Record) \u306f\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u3092\u793a\u3059\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3092\u8a31\u53ef\u3055\u308c\u305f\u30b5\u30fc\u30d0\u30fc\u306e\u4e00\u89a7\u3092\u516c\u958b\u3057\u307e\u3059\u3002\u53d7\u4fe1\u5074\u306e\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u304cSPF\u30ec\u30b3\u30fc\u30c9\u306b\u767b\u9332\u3055\u308c\u305f\u6b63\u898f\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3092\u78ba\u8a8d\u3057\u3001\u4e0d\u6b63\u9001\u4fe1\u3084\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/mx_record\/\" target=\"_blank\" rel=\"noreferrer noopener\">MX\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u4f55\u304b\u3001\u5f79\u5272\u3084\u78ba\u8a8d\u65b9\u6cd5<\/a>\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/mx_record\/\" target=\"_blank\" rel=\"noopener noreferrer\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081\uff1aSPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u6280\u8853<\/h2>\n\n\n\n<p><strong><span style=\"background-color: #ffff99\" class=\"background-color\">\u3053\u3053\u307e\u3067SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u3069\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u306a\u306e\u304b\uff1f\u8a2d\u5b9a\u65b9\u6cd5\u3084\u6b63\u3057\u3044\u66f8\u304d\u65b9\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u3066\u304d\u307e\u3057\u305f\u3002<\/span><\/strong><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u3068\u306f\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u30fc\u3068DNS\u4e0a\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u6bd4\u8f03\u3057\u3001\u6b63\u898f\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u9001\u4fe1\u3067\u3042\u308b\u3053\u3068\u3092\u793a\u3059\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853\u306e\u4e00\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306bGmail\u30a2\u30c9\u30ec\u30b9\u3078\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u3068\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u8a8d\u8b58\u3055\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u300c<a href=\"https:\/\/www.value-domain.com\/media\/not-receive-mail\/\">\u9001\u3063\u305f\u306f\u305a\u306e\u30e1\u30fc\u30eb\u304c\u76f8\u624b\u306b\u5c4a\u3044\u3066\u3044\u306a\u3044\uff01<\/a>\u300d\u3068\u60a9\u3093\u3067\u3044\u308b\u4eba\u306f\u3001\u305c\u3072\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u53c2\u8003\u306bSPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u3092\u898b\u76f4\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u3084\u30e1\u30fc\u30eb\u4e0d\u9054\u306e\u5bfe\u7b56\u3092\u672c\u683c\u7684\u306b\u9032\u3081\u305f\u3044\u65b9\u306b\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u6e08\u307f\u306e\u30e1\u30fc\u30eb\u74b0\u5883\u3092\u63d0\u4f9b\u3059\u308b\u300ccore_text\u300d\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-luxe-blocks-border-block\" style=\"margin-top:10px;margin-bottom:30px\"><div class=\"wp-block-luxe-blocks-border-block-content\" style=\"border:2px solid #ffa500;border-radius:0px;padding:0px 15px 0px 15px\">\n<ul>\n<li>SPF\uff0fDKIM\uff0fDMARC\u8a2d\u5b9a\u306b\u5bfe\u5fdc<\/li>\n\n\n\n<li>\u7121\u6599SSL\u30fb\u30a6\u30a4\u30eb\u30b9\u5bfe\u7b56\u6a5f\u80fd\u3092\u6a19\u6e96\u642d\u8f09<\/li>\n\n\n\n<li>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u8a2d\u5b9a\u3082\u304b\u3093\u305f\u3093\uff01<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p><strong>\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u306f<a id=\"vn_cta_lp_vd\" class=\"ga_event_link\" style=\"{style}\" href=\"https:\/\/www.value-domain.com\/\">\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3<\/a>\u3001\u30e1\u30fc\u30eb\u30fbWeb\u904b\u7528\u306f\u30b3\u30a2\u30b5\u30fc\u30d0\u30fc<\/strong>\u3092\u7d44\u307f\u5408\u308f\u305b\u308c\u3070\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u3068\u5b89\u5b9a\u3057\u305f\u904b\u7528\u74b0\u5883\u3092\u30ef\u30f3\u30b9\u30c8\u30c3\u30d7\u3067\u6574\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-buttons\"><div class=\"wp-block-button has-custom-width wp-block-button__width-100 btn-service core\">\n<p class=\"txt\">20\uff05OFF\uff01\u30c9\u30e1\u30a4\u30f3\u7121\u6599\u3067\u6708312\u5186\uff5e<\/p>\n<a id=\"vn_cta_b0tn_lp_core\" class=\"ga_event_link wp-block-button__link has-white-color\" href=\"https:\/\/www.coreserver.jp\/\" style=\"background-color:#de5916\" target=\"_blank\" rel=\"noreferrer noopener\">\u30b3\u30a2\u30b5\u30fc\u30d0\u30fc\u516c\u5f0f\u30b5\u30a4\u30c8\u3092\u307f\u308b<\/a><\/div><\/div>\n\n\n<p><div style=\"padding: 15px 12px 10px; font-size: 1em; background: #ffffe0; width: 100\uff05; height: 100\uff05;\"><span style=\"background-color: #ffffe0; color: #333;\"><span class=\"font-size\" style=\"font-size: 18px;\"><span class=\"has-inline-color\" style=\"color: #ff8c00;\"><strong>\u25bd\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u958b\u50ac\u4e2d\uff01<\/strong><\/span><\/span><\/span><\/div>\n<div style=\"padding: 15px 12px 10px; font-size: 1em; background: #ffffe0; width: 100\uff05; height: 100\uff05;\"><span style=\"background-color: #ffffe0; color: #333;\"><span data-sheets-formula-bar-text-style=\"color:#000000;font-weight:normal;text-decoration:none;font-family:'Arial';font-style:normal;text-decoration-skip-ink:none;\">\u30b3\u30a2\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u3001V2\u30d7\u30e9\u30f3\uff08CORE-X,Y,Z\uff09\u3068\u30c9\u30e1\u30a4\u30f3\u306e\u540c\u6642\u7533\u3057\u8fbc\u307f\u3067<br \/><span style=\"color: #333333;\">\u30c9\u30e1\u30a4\u30f3\u304c<\/span><span class=\"text-color\" style=\"color: #ff0000;\"><strong>\u5b9f\u8cea<span style=\"font-size: 1.3em;\">0<\/span>\u5186\uff08\u5e74\u9593\u6700\u5927<span style=\"font-size: 1.3em;\">3,889<\/span>\u5186\u304a\u5f97\uff09<\/strong><\/span>\u306b\u306a\u308b<strong>\u30b5\u30fc\u30d0\u30fc\u30bb\u30c3\u30c8\u5272\u7279\u5178<\/strong><\/span><\/span><span style=\"background-color: #ffffe0; color: #333;\"><span data-sheets-formula-bar-text-style=\"color:#000000;font-weight:normal;text-decoration:none;font-family:'Arial';font-style:normal;text-decoration-skip-ink:none;\"><span style=\"color: #333333;\">\u3092\u5c55\u958b\u4e2d\u3067\u3059\u3002<br \/><\/span><\/span><\/span><\/div>\n<div style=\"padding: 15px 12px 10px; font-size: 1em; background: #ffffe0; width: 100\uff05; height: 100\uff05;\"><span style=\"background-color: #ffffe0; color: #333;\"><span data-sheets-formula-bar-text-style=\"color:#000000;font-weight:normal;text-decoration:none;font-family:'Arial';font-style:normal;text-decoration-skip-ink:none;\">\u662f\u975e\u3001\u304a\u5f97\u306a\u3053\u306e\u6a5f\u4f1a\u306b\u3054\u5229\u7528\u304f\u3060\u3055\u3044\uff01<br \/><span style=\"color: #333333;\">\u6700\u65b0\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306f<\/span><\/span><span style=\"font-size: 1.3em;\"><a style=\"color: ff0000;\" href=\"https:\/\/www.value-domain.com\/media\/2022campaign-all\/\" target=\"_blank\" rel=\"noopener\"><strong>\u3053\u3061\u3089<\/strong><\/a><\/span>\u304b\u3089<br \/><\/span><\/div>\n<p><!-- wp:paragraph --><\/p>\n<p><a href=\"https:\/\/www.coreserver.jp\/\" target=\"_blank\" class=\"bnr_inner_area ga_event_banner\" id=\"vn_cta_lp_core\"><img src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2024\/06\/core_bnr2.png\" alt=\"\u8d85\u9ad8\u901f\u5316\u3092\u5b9f\u73fe\u3059\u308b\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc CORESERVER\" width=\"{width}\" height=\"{height}\"><\/a><\/p>\n<p><!-- \/wp:paragraph --><\/p><br \/>\n<div style=\"padding: 15px 12px 10px; font-size: 1em; background: papayawhip; width: 100\uff05; height: 100\uff05;\"><span style=\"background-color: papayawhip; color: #333;\"><span style=\"background-color: papayawhip; color: #333;\"><span class=\"font-size\" style=\"font-size: 18px;\"><mark class=\"has-inline-color\" style=\"color: #ff8c00;\"><strong><span style=\"background-color: papayawhip; color: #333;\"><span 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data-sheets-formula-bar-text-style=\"font-size:13px;color:#000000;font-weight:normal;text-decoration:none;font-family:'Arial';font-style:normal;text-decoration-skip-ink:none;\"><span style=\"color: #333333;\"><span style=\"font-size: revert; color: initial;\"><strong>\u3010 .com1\u500b\u76ee <span class=\"text-color\" style=\"color: #ff0000;\"><span class=\"font-size\" style=\"font-size: 1.3em;\">790<\/span>\u5186<\/span> <\/strong><span style=\"font-size: revert; color: initial;\"><strong>\u3011\u306e\u30c9\u30e1\u30a4\u30f3\u30bb\u30fc\u30eb\u3001<br \/><\/strong><\/span><\/span><\/span><\/span><\/span><\/span><span style=\"background-color: papayawhip; color: #333;\"><span style=\"background-color: papayawhip; color: #333;\"><span 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style=\"font-size: 1.3em;\">\u3053\u3061\u3089<\/span><\/strong><\/a><\/span><span style=\"font-size: 1em;\">\u304b\u3089<\/span><\/span><\/span><\/div>\n<p><!-- wp:paragraph --><\/p>\n<p><a href=\"https:\/\/www.value-domain.com\/\" target=\"_blank\" class=\"bnr_inner_area ga_event_banner\" id=\"vn_cta_lp_vd\"><img src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2024\/06\/vd_bnr2.png\" alt=\"\u30c9\u30e1\u30a4\u30f3\u53d6\u5f97\u306a\u3089Value Domain\"><\/a><\/p><br \/>\n<div class=\"wp-block-luxe-blocks-profile\">\n<div class=\"luxe-pf-cont\">\n<div class=\"luxe-pf-wrap\">\n<div class=\"luxe-pf-title-wrap\"><span class=\"luxe-pf-icon\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"16\" height=\"16\" viewBox=\"0 2 24 28\"><path d=\"M5.672 24l1.422-1.422-3.672-3.672-1.422 1.422v1.672h2v2h1.672zM13.844 9.5c0-0.203-0.141-0.344-0.344-0.344-0.094 0-0.187 0.031-0.266 0.109l-8.469 8.469c-0.078 0.078-0.109 0.172-0.109 0.266 0 0.203 0.141 0.344 0.344 0.344 0.094 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