{"id":14285,"date":"2026-07-22T17:41:16","date_gmt":"2026-07-22T08:41:16","guid":{"rendered":"https:\/\/media.value-domain.com\/?p=14285"},"modified":"2026-07-22T17:41:17","modified_gmt":"2026-07-22T08:41:17","slug":"domain-authentication","status":"publish","type":"post","link":"https:\/\/media.value-domain.com\/domain-authentication\/","title":{"rendered":"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u3068\u306f\uff1f\u8a2d\u5b9a\u624b\u9806\u3068\u78ba\u8a8d\u65b9\u6cd5"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/thumb_domain-authentication-1024x632.png\" alt=\"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u3068\u306f\uff1f\" class=\"wp-image-58041\" \/><\/figure>\n\n\n\n<p>\u300c\u9001\u3063\u305f\u306f\u305a\u306e\u30e1\u30fc\u30eb\u304c\u5c4a\u3044\u3066\u3044\u306a\u3044\u300d\u300c\u91cd\u8981\u306a\u8fd4\u4fe1\u304c\u76f8\u624b\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3044\u305f\u300d<\/p>\n\n\n\n<p>\u3053\u3046\u3057\u305f\u30e1\u30fc\u30eb\u30c8\u30e9\u30d6\u30eb\u306f\u3001WordPress\u306e\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u3084\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u3044\u308bWeb\u30b5\u30a4\u30c8\u904b\u55b6\u8005\u3067\u3042\u308c\u3070\u3001\u8ab0\u3082\u304c\u76f4\u9762\u3057\u3046\u308b\u554f\u984c\u3067\u3059\u3002<br>\u539f\u56e0\u306e\u591a\u304f\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u4e0d\u5177\u5408\u3067\u306f\u306a\u304f\u3001<strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u306e\u8a2d\u5b9a\u4e0d\u5099<\/strong>\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>2024\u5e742\u6708\u306bGoogle\u3068Yahoo!\u304c\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u6539\u5b9a\u3057\u3066\u4ee5\u964d\u3001\u8a8d\u8a3c\u8a2d\u5b9a\u304c\u4e0d\u5341\u5206\u306a\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5927\u4f01\u696d\u3060\u3051\u306e\u554f\u984c\u3067\u306f\u306a\u304f\u3001\u500b\u4eba\u4e8b\u696d\u4e3b\u3084\u4e2d\u5c0f\u4f01\u696d\u304c\u904b\u55b6\u3059\u308bWeb\u30b5\u30a4\u30c8\u3082\u4f8b\u5916\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u306b\u3064\u3044\u3066\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3068\u306f\uff1f<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304c\u751f\u307e\u308c\u308b\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p>\u30e1\u30fc\u30eb\u306e\u4ed5\u7d44\u307f\u306f\u975e\u5e38\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u3001\u9001\u4fe1\u8005\u304c\u300cFrom\u300d\u6b04\u306b\u5165\u529b\u3057\u305f\u30a2\u30c9\u30ec\u30b9\u304c\u305d\u306e\u307e\u307e\u76f8\u624b\u306b\u5c4a\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u300cFrom\u300d\u6b04\u306f<strong>\u8ab0\u3067\u3082\u81ea\u7531\u306b\u66f8\u304d\u63db\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059<\/strong>\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u60aa\u610f\u306e\u3042\u308b\u7b2c\u4e09\u8005\u304c info@example.com \u3068\u3044\u3046\u9001\u4fe1\u5143\u3092\u507d\u3063\u3066\u8ff7\u60d1\u30e1\u30fc\u30eb\u3092\u5927\u91cf\u9001\u4fe1\u3057\u305f\u3068\u3057\u3066\u3082\u3001\u30e1\u30fc\u30eb\u672c\u4f53\u306e\u4ed5\u7d44\u307f\u3060\u3051\u3067\u306f\u53d7\u4fe1\u8005\u306f\u305d\u308c\u304c\u672c\u7269\u304b\u3069\u3046\u304b\u3092\u898b\u5206\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u3053\u308c\u304c<a href=\"https:\/\/www.value-domain.com\/media\/mail-spoofing\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb<\/a>\u304c\u751f\u307e\u308c\u308b\u6839\u672c\u7684\u306a\u539f\u56e0\u3067\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/fishingmail-about\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a<\/a>\u3084\u4e0d\u6b63\u9001\u91d1\u3092\u72d9\u3063\u305f\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\uff08BEC\uff09\u306e\u591a\u304f\u306f\u3001\u3053\u306e\u4ed5\u7d44\u307f\u3092\u60aa\u7528\u3057\u3066\u5b9f\u5728\u3059\u308b\u4f01\u696d\u3084\u500b\u4eba\u3092\u88c5\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u306b\u300c\u9001\u4fe1\u5143\u306e\u8a3c\u660e\u300d\u3092\u52a0\u3048\u308b\u4ed5\u7d44\u307f<\/h3>\n\n\n\n<p>\u3053\u3046\u3057\u305f\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u3050\u305f\u3081\u306b\u751f\u307e\u308c\u305f\u306e\u304c<strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u3001\u30e1\u30fc\u30eb\u306e\u300c\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u300d\u304c\u6b63\u898f\u306e\u3082\u306e\u304b\u3069\u3046\u304b\u3092\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u81ea\u52d5\u3067\u691c\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002DNS\uff08\u30c9\u30e1\u30a4\u30f3\u30cd\u30fc\u30e0\u30b7\u30b9\u30c6\u30e0\uff09\u306b\u8a8d\u8a3c\u60c5\u5831\u3092\u767b\u9332\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306f\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u672c\u5f53\u306b\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3089\u308c\u305f\u3082\u306e\u304b\u300d\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u73fe\u5728\u3001\u6a19\u6e96\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u6280\u8853\u306f\u4ee5\u4e0b\u306e3\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>\u6280\u8853<\/strong><\/th><th><strong>\u5f79\u5272<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>SPF<\/strong><\/td><td>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u898f\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td><strong>DKIM<\/strong><\/td><td>\u96fb\u5b50\u7f72\u540d\u3067\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3059\u308b<\/td><\/tr><tr><td><strong>DMARC<\/strong><\/td><td>SPF\/DKIM\u5931\u6557\u6642\u306b\u3069\u3046\u51e6\u7406\u3059\u308b\u304b\u30dd\u30ea\u30b7\u30fc\u3092\u5b9a\u3081\u308b<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c<\/figcaption><\/figure>\n\n\n\n<p>\u3053\u306e3\u3064\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u52b9\u679c\u7684\u306b\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><br>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001S\/MIME\u65b9\u5f0f\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\uff08\u4e2d\u8eab\uff09\u306b\u9375\u3092\u304b\u3051\u3066\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u500b\u4eba\u307e\u305f\u306f\u7d44\u7e54\u3092\u8a8d\u8a3c\u3059\u308b\u3082\u306e\u3067\u3059\u3002\u4e3b\u306b\u4f01\u696d\u3084\u516c\u7684\u6a5f\u95a2\u3001\u9280\u884c\u306a\u3069\u304c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\uff08\u306a\u308a\u3059\u307e\u3057\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u306e\u9632\u6b62\uff09\u306e\u305f\u3081\u306b\u5c0e\u5165\u3057\u3066\u3044\u307e\u3059\u3002<br>\u30e1\u30fc\u30eb\u306b\u6dfb\u4ed8\u3055\u308c\u3066\u3044\u308b smime.p7s \u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u304c\u305d\u308c\u3067\u3001\u305d\u306e\u30e1\u30fc\u30eb\u304c\u300c\u96fb\u5b50\u7f72\u540d\u300d\u306b\u3088\u3063\u3066\u4fdd\u8b77\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u793a\u3059\u8a3c\u660e\u66f8\u30c7\u30fc\u30bf\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u4e0a\u3067\u300c\u30ea\u30dc\u30f3\u300d\u3084\u300c\u9375\u300d\u306e\u30de\u30fc\u30af\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u65b9\u5f0f<\/th><th>SPF\u30fbDKIM\u30fbDMARC<\/th><th>S\/MIME<\/th><\/tr><\/thead><tbody><tr><th>\u8a8d\u8a3c\u306e\u5bfe\u8c61<\/th><td>\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u30fc\u30fb\u30c9\u30e1\u30a4\u30f3<br>\u300c\u6b63\u3057\u3044\u30eb\u30fc\u30c8\u304b\u3089\u9001\u3089\u308c\u305f\u304b\u300d\u3092\u8a8d\u8a3c<\/td><td>\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u500b\u4eba\uff08\u307e\u305f\u306f\u7d44\u7e54\uff09<br>\u300cA\u3055\u3093\u304c\u66f8\u3044\u305f\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\u300d\u3092\u8a8d\u8a3c<\/td><\/tr><tr><th>\u4ed5\u7d44\u307f<\/th><td>\u53d7\u4fe1\u5074\u306e\u30b5\u30fc\u30d0\u30fc\u540c\u58eb\u304c\u3001DNS\u30ec\u30b3\u30fc\u30c9\uff08\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u53f0\u5e33\uff09\u3092\u7167\u5408\u3057\u3066\u78ba\u8a8d\u3059\u308b\u3002<\/td><td>\u9001\u4fe1\u8005\u304c\u30e1\u30fc\u30eb\u3054\u3068\u306b\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3092\u6dfb\u4ed8\u3059\u308b\uff08\u307e\u305f\u306f\u6697\u53f7\u5316\u3059\u308b\uff09\u3002<\/td><\/tr><tr><th>\u53d7\u4fe1\u8005\u5074\u306e\u898b\u3048\u65b9<\/th><td>\u901a\u5e38\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u76ee\u306b\u306f\u898b\u3048\u306a\u3044\uff08\u88cf\u5074\u3067\u81ea\u52d5\u5224\u5b9a\u3055\u308c\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u632f\u308a\u5206\u3051\u306a\u3069\u306b\u4f7f\u308f\u308c\u308b\uff09\u3002<\/td><td>\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u4e0a\u3067\u300c\u30ea\u30dc\u30f3\u300d\u3084\u300c\u9375\u300d\u306e\u30de\u30fc\u30af\u304c\u8868\u793a\u3055\u308c\u308b\u3002\u3042\u308b\u3044\u306f\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb smime.p7s\u304c\u898b\u3048\u308b\u3002<\/td><\/tr><tr><th>\u6539\u3056\u3093\u691c\u77e5<\/th><td>DKIM\u306e\u307f\u53ef\u80fd\uff08\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u691c\u8a3c\uff09\u3002SPF\u306f\u30eb\u30fc\u30c8\u306e\u307f\u3002&nbsp;<\/td><td>\u53ef\u80fd\u3002\u30e1\u30fc\u30eb\u306e\u672c\u6587\u3084\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u304c1\u6587\u5b57\u3067\u3082\u66f8\u304d\u63db\u3048\u3089\u308c\u305f\u3089\u8b66\u544a\u304c\u51fa\u308b\u3002<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u65b9\u5f0f\u3068S\/MIME\u65b9\u5f0f\u306e\u9055\u3044<\/figcaption><\/figure>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f<strong>SPF\u30fbDKIM\u30fbDMARC<\/strong>\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3055\u308c\u308b\u539f\u56e0<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u53b3\u683c\u5316\u3068\u6b63\u898f\u30e1\u30fc\u30eb\u3078\u306e\u5f71\u97ff<\/h3>\n\n\n\n<p>2024\u5e742\u6708\u3001Gmail\u3068Yahoo!\u30e1\u30fc\u30eb\u306f\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u5927\u5e45\u306b\u6539\u5b9a\u3057\u307e\u3057\u305f\u30021\u65e55,000\u4ef6\u4ee5\u4e0a\u306e\u30e1\u30fc\u30eb\u3092\u9001\u308b\u5927\u91cf\u9001\u4fe1\u8005\u306b\u306f\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u304c<strong>\u5fc5\u9808\u8981\u4ef6<\/strong>\u3068\u3057\u3066\u8ab2\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u6ce8\u76ee\u3059\u3079\u304d\u306f\u3001\u3053\u306e\u5f71\u97ff\u304c\u5927\u91cf\u9001\u4fe1\u8005\u3060\u3051\u306b\u3068\u3069\u307e\u3089\u306a\u3044\u70b9\u3067\u3059\u3002\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u65e5\u3005\u9032\u5316\u3057\u3066\u304a\u308a\u3001\u8a2d\u5b9a\u304c\u4e0d\u5341\u5206\u306a\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3001\u9001\u4fe1\u6570\u306b\u95a2\u308f\u3089\u305a\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>WordPress\u306e\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u81ea\u52d5\u8fd4\u4fe1\u30e1\u30fc\u30eb\u3001\u6ce8\u6587\u78ba\u8a8d\u30e1\u30fc\u30eb\u3001\u8acb\u6c42\u66f8\u306e\u9001\u4ed8\u306a\u3069\u3001\u30d3\u30b8\u30cd\u30b9\u306b\u6b20\u304b\u305b\u306a\u3044\u30e1\u30fc\u30eb\u304c\u76f8\u624b\u306b\u5c4a\u304b\u306a\u304f\u306a\u308b\u30b1\u30fc\u30b9\u304c\u5897\u3048\u3066\u3044\u308b\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/spam\/\" data-type=\"link\" data-id=\"https:\/\/www.value-domain.com\/media\/spam\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u308b\u539f\u56e0<\/a>\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u4e0d\u5099\u3060\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u57fa\u672c\u7684\u306a\u539f\u56e0\u3084\u5bfe\u51e6\u6cd5\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u3082\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/spam\/\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u5171\u7528\u30b5\u30fc\u30d0\u30fc\u5229\u7528\u8005\u304c\u76f4\u9762\u3059\u308b\u300c\u5dfb\u304d\u6dfb\u3048\u30ea\u30b9\u30af\u300d<\/h3>\n\n\n\n<p>\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u591a\u304f\u306f<strong>\u5171\u7528\u30b5\u30fc\u30d0\u30fc<\/strong>\u5f62\u5f0f\u3092\u63a1\u7528\u3057\u3066\u304a\u308a\u30011\u3064\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u8907\u6570\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u5171\u6709\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u306b\u5927\u304d\u306a\u30ea\u30b9\u30af\u304c\u6f5c\u3093\u3067\u3044\u307e\u3059\u3002\u540c\u3058\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u3063\u3066\u3044\u308b\u5225\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3092\u5927\u91cf\u9001\u4fe1\u3057\u305f\u5834\u5408\u3001\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u5168\u4f53\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u9001\u4fe1\u5143\u3068\u3057\u3066\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u308b\u3068\u3001\u307e\u3063\u305f\u304f\u95a2\u4fc2\u306e\u306a\u3044\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u3063\u305f\u30e1\u30fc\u30eb\u307e\u3067\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u304c\u300c\u5dfb\u304d\u6dfb\u3048\u30ea\u30b9\u30af\u300d\u3068\u547c\u3070\u308c\u308b\u554f\u984c\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u305f\u3068\u3048<strong>IP\u30a2\u30c9\u30ec\u30b9\u304c\u6c5a\u67d3\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3057\u305f\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3053\u3068\u3092\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306b\u8a3c\u660e\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u5909\u308f\u308b\u3053\u3068<\/h3>\n\n\n\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u4ee5\u4e0b\u306e\u52b9\u679c\u304c\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"has-lightyellow-background-color has-background\">\n<li><strong>\u30e1\u30fc\u30eb\u306e\u5230\u9054\u7387\u304c\u5411\u4e0a\u3059\u308b<\/strong>\uff1a\u6b63\u898f\u306e\u9001\u4fe1\u5143\u3068\u3057\u3066\u8a8d\u8a3c\u3055\u308c\u308b\u305f\u3081\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u6b62\u3067\u304d\u308b<\/strong>\uff1a\u7b2c\u4e09\u8005\u304c\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u9a19\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d6\u30e9\u30f3\u30c9\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u307e\u308b<\/strong>\uff1a\u53d7\u4fe1\u8005\u306b\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u672c\u7269\u3060\u300d\u3068\u3044\u3046\u5b89\u5fc3\u611f\u3092\u4e0e\u3048\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>DMARC<\/strong><strong>\u30ec\u30dd\u30fc\u30c8\u3067\u4e0d\u6b63\u5229\u7528\u3092\u691c\u77e5\u3067\u304d\u308b<\/strong>\uff1a\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u60aa\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u305d\u308c\u305e\u308c\u306e\u4ed5\u7d44\u307f<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">SPF \uff0d \u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u30fc\u3092\u8a3c\u660e\u3059\u308b<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">SPF\uff08Sender Policy Framework\uff09 \u306f\u3001\u3042\u308b\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\uff08IP\u30a2\u30c9\u30ec\u30b9\uff09\u306e\u30ea\u30b9\u30c8\u3092DNS\u306b\u767b\u9332\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u305f\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u9001\u4fe1\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068DNS\u306b\u767b\u9332\u3055\u308c\u305f\u30ea\u30b9\u30c8\u3092\u7167\u5408\u3057\u307e\u3059\u3002\u30ea\u30b9\u30c8\u306b\u542b\u307e\u308c\u3066\u3044\u308c\u3070\u300cPASS\u300d\u3001\u542b\u307e\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u300cFAIL\u300d\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>SPF<\/strong><strong>\u30ec\u30b3\u30fc\u30c9\u306e\u4f8b\uff1a<\/strong><\/p>\n\n\n\n<p class=\"has-lightyellow-background-color has-background\"><code>v=spf1 include:_spf.google.com ~all<\/code><\/p>\n\n\n\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>\u30d1\u30e9\u30e1\u30fc\u30bf<\/strong><\/th><th><strong>\u8aac\u660e<\/strong><\/th><\/tr><\/thead><tbody><tr><td>v=spf1<\/td><td>SPF\u30d0\u30fc\u30b8\u30e7\u30f31\u3092\u4f7f\u7528\uff08\u5fc5\u9808\uff09<\/td><\/tr><tr><td>include:_spf.google.com<\/td><td>Google\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u9001\u4fe1\u3092\u8a31\u53ef<\/td><\/tr><tr><td>~all<\/td><td>\u30ea\u30b9\u30c8\u5916\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u9001\u4fe1\u306f\u30bd\u30d5\u30c8\u30d5\u30a7\u30a4\u30eb\uff08\u53d7\u4fe1\u3059\u308b\u304c\u7591\u308f\u3057\u3044\u3068\u30de\u30fc\u30af\uff09<\/td><\/tr><tr><td>-all<\/td><td>\u30ea\u30b9\u30c8\u5916\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u9001\u4fe1\u306f\u30cf\u30fc\u30c9\u30d5\u30a7\u30a4\u30eb\uff08\u62d2\u5426\uff09<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">SPF\u30ec\u30b3\u30fc\u30c9\u306e\u30d1\u30e9\u30e1\u30fc\u30bf<\/figcaption><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/spf-record\/\" target=\"_blank\" rel=\"noreferrer noopener\">SPF\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f<\/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\/spf-record\/\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">DKIM \uff0d \u30e1\u30fc\u30eb\u306e\u6539\u3056\u3093\u3092\u691c\u77e5\u3059\u308b<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">DKIM\uff08DomainKeys Identified Mail\uff09 \u306f\u3001\u96fb\u5b50\u7f72\u540d\u3092\u4f7f\u3063\u3066\u30e1\u30fc\u30eb\u306e\u6b63\u5f53\u6027\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u306f\u30e1\u30fc\u30eb\u306b<strong>\u79d8\u5bc6\u9375<\/strong>\u3067\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u3051\u3066\u9001\u4fe1\u3057\u307e\u3059\u3002\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u306fDNS\u306b\u516c\u958b\u3055\u308c\u3066\u3044\u308b<strong>\u516c\u958b\u9375<\/strong>\u3092\u4f7f\u3063\u3066\u305d\u306e\u7f72\u540d\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002\u7f72\u540d\u304c\u4e00\u81f4\u3059\u308c\u3070\u300c\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3053\u3068\u304c\u8a3c\u660e\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>DKIM\u306e\u4ed5\u7d44\u307f\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e3\u70b9\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<ol type=\"1\" start=\"1\" class=\"has-lightyellow-background-color has-background\">\n<li>\u9001\u4fe1\u6642\uff1a\u30e1\u30fc\u30eb\u306e\u672c\u6587\u30fb\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u3092\u30cf\u30c3\u30b7\u30e5\u5316\u3057\u3001\u79d8\u5bc6\u9375\u3067\u7f72\u540d<\/li>\n\n\n\n<li>DNS\u306b\u516c\u958b\u9375\u3092\u767b\u9332\uff08TXT\u30ec\u30b3\u30fc\u30c9\uff09<\/li>\n\n\n\n<li>\u53d7\u4fe1\u6642\uff1a\u516c\u958b\u9375\u3067\u7f72\u540d\u3092\u691c\u8a3c\u3057\u3001\u6539\u3056\u3093\u306e\u6709\u7121\u3092\u78ba\u8a8d<\/li>\n<\/ol>\n\n\n\n<p><strong>DKIM\u306e\u5f37\u307f\uff1a<\/strong> \u30e1\u30fc\u30eb\u304c\u8ee2\u9001\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u7f72\u540d\u306f\u7dad\u6301\u3055\u308c\u308b\u305f\u3081\u3001\u8ee2\u9001\u6642\u306eSPF\u5931\u6557\u3092\u30ab\u30d0\u30fc\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/dkim\/\" target=\"_blank\" rel=\"noreferrer noopener\">DKIM\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f<\/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\/dkim\/\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">DMARC \uff0d \u8a8d\u8a3c\u5931\u6557\u6642\u306e\u51e6\u7406\u3092\u6c7a\u3081\u308b<\/h3>\n\n\n\n<p><strong><mark style=\"background-color:#ffff99\" class=\"has-inline-color\">DMARC\uff08Domain-based Message Authentication, Reporting, and Conformance\uff09 \u306f\u3001SPF\u307e\u305f\u306fDKIM\u306e\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u304c\u3069\u3046\u51e6\u7406\u3059\u3079\u304d\u304b\u3092\u6307\u793a\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/mark><\/strong><\/p>\n\n\n\n<p>\u307e\u305f\u3001\u300c\u30d8\u30c3\u30c0\u30fcFrom\u300d\u306e\u30c9\u30e1\u30a4\u30f3\u3068SPF\/DKIM\u304c\u8a8d\u8a3c\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\uff08\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff09\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>DMARC<\/strong><strong>\u30ec\u30b3\u30fc\u30c9\u306e\u4f8b\uff1a<\/strong><\/p>\n\n\n\n<p class=\"has-lightyellow-background-color has-background\"><code>v=DMARC1; p=quarantine; rua=mailto:dmarc-report@example.com; pct=100<\/code><\/p>\n\n\n\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u4e3b\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>\u30d1\u30e9\u30e1\u30fc\u30bf<\/strong><\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>v=DMARC1<\/td><td>DMARC\u30d0\u30fc\u30b8\u30e7\u30f3\uff08\u5fc5\u9808\uff09<\/td><\/tr><tr><td>p=none<\/td><td>\u8a8d\u8a3c\u5931\u6557\u3067\u3082\u4f55\u3082\u3057\u306a\u3044\uff08\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u7528\uff09<\/td><\/tr><tr><td>p=quarantine<\/td><td>\u8a8d\u8a3c\u5931\u6557\u30e1\u30fc\u30eb\u3092\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u3078<\/td><\/tr><tr><td>p=reject<\/td><td>\u8a8d\u8a3c\u5931\u6557\u30e1\u30fc\u30eb\u3092\u5b8c\u5168\u306b\u62d2\u5426<\/td><\/tr><tr><td>rua=mailto:...<\/td><td>\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u306e\u9001\u4ed8\u5148<\/td><\/tr><tr><td>pct=100<\/td><td>\u30dd\u30ea\u30b7\u30fc\u9069\u7528\u5272\u5408\uff08%\uff09<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>DMARC\u30ec\u30b3\u30fc\u30c9\u306e<\/strong>\u30d1\u30e9\u30e1\u30fc\u30bf<\/figcaption><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.value-domain.com\/media\/dmarc-about\/\" target=\"_blank\" rel=\"noreferrer noopener\">DMARC\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f<\/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\/dmarc-about\/\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u305c3\u3064\u30bb\u30c3\u30c8\u3067\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u306e\u304b<\/h3>\n\n\n\n<p>SPF\u30fbDKIM\u30fbDMARC\u306f\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u5f79\u5272\u3092\u6301\u3061\u3001\u5358\u72ec\u3067\u306f\u5b8c\u5168\u306a\u4fdd\u8b77\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p><strong>SPF<\/strong><strong>\u3060\u3051\u3067\u306f\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>\u30d8\u30c3\u30c0\u30fcFrom\u306e\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u3052\u306a\u3044<\/li>\n\n\n\n<li>\u30e1\u30fc\u30eb\u8ee2\u9001\u6642\u306bSPF\u304c\u5931\u6557\u3057\u3066\u3057\u307e\u3046<\/li>\n<\/ul>\n\n\n\n<p><strong>DKIM<\/strong><strong>\u3060\u3051\u3067\u306f\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>\u6b63\u898f\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3089\u308c\u305f\u5834\u5408\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3067\u3082\u7f72\u540d\u304c\u4ed8\u3044\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b<\/li>\n\n\n\n<li>\u8a8d\u8a3c\u5931\u6557\u6642\u306e\u51e6\u7406\u3092\u6307\u793a\u3067\u304d\u306a\u3044<\/li>\n<\/ul>\n\n\n\n<p><strong>DMARC<\/strong><strong>\u3060\u3051\u3067\u306f\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>SPF\u3068DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u304c\u306a\u3051\u308c\u3070\u6a5f\u80fd\u3057\u306a\u3044<\/li>\n<\/ul>\n\n\n\n<p><strong>3<\/strong><strong>\u3064\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>SPF \u2192\u300c\u3069\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3063\u3066\u3044\u3044\u304b\u300d\u3092\u5b9a\u7fa9<\/li>\n\n\n\n<li>DKIM \u2192\u300c\u30e1\u30fc\u30eb\u304c\u672c\u7269\u3067\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u300d\u3092\u8a3c\u660e<\/li>\n\n\n\n<li>DMARC \u2192\u300c\u8a8d\u8a3c\u5931\u6557\u6642\u306b\u3069\u3046\u3059\u308b\u304b\u300d\u3092\u6307\u793a\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u6700\u7d42\u5224\u5b9a\u3092\u884c\u3046<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u4e09\u5c64\u69cb\u9020\u306b\u3088\u308a\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u5bfe\u3059\u308b\u5805\u7262\u306a\u9632\u5fa1\u304c\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>SPF\u30fbDKIM\u30fbDMARC\u306e\u6bd4\u8f03\u4e00\u89a7\u8868<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>\u9805\u76ee<\/strong><\/th><th>SPF<\/th><th>DKIM<\/th><th>DMARC<\/th><\/tr><\/thead><tbody><tr><td>\u691c\u8a3c\u5bfe\u8c61<\/td><td>\u9001\u4fe1IP\u30a2\u30c9\u30ec\u30b9<\/td><td>\u30e1\u30fc\u30eb\u7f72\u540d<\/td><td>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff0b\u30dd\u30ea\u30b7\u30fc<\/td><\/tr><tr><td>DNS\u30ec\u30b3\u30fc\u30c9\u7a2e\u5225<\/td><td>TXT\u30ec\u30b3\u30fc\u30c9<\/td><td>TXT\u30ec\u30b3\u30fc\u30c9<\/td><td>TXT\u30ec\u30b3\u30fc\u30c9<\/td><\/tr><tr><td>\u8ee2\u9001\u6642\u306e\u8010\u6027<\/td><td>\u5f31\u3044\uff08\u5931\u6557\u3057\u3084\u3059\u3044\uff09<\/td><td>\u5f37\u3044\uff08\u7f72\u540d\u304c\u7dad\u6301\u3055\u308c\u308b\uff09<\/td><td>SPF\/DKIM\u306e\u7d50\u679c\u306b\u4f9d\u5b58<\/td><\/tr><tr><td>\u306a\u308a\u3059\u307e\u3057\u9632\u6b62<\/td><td>\u90e8\u5206\u7684<\/td><td>\u90e8\u5206\u7684<\/td><td>\u9ad8\u3044\uff08\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u3067\u691c\u8a3c\uff09<\/td><\/tr><tr><td>\u30ec\u30dd\u30fc\u30c8\u6a5f\u80fd<\/td><td>\u306a\u3057<\/td><td>\u306a\u3057<\/td><td>\u3042\u308a\uff08\u96c6\u8a08\u30fb\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\uff09<\/td><\/tr><tr><td>\u5358\u72ec\u3067\u306e\u5b8c\u5168\u6027<\/td><td>\u2715<\/td><td>\u2715<\/td><td>\u2715<\/td><\/tr><tr><td>3\u3064\u7d44\u307f\u5408\u308f\u305b<\/td><td>\u25ce<\/td><td>\u25ce<\/td><td>\u25ce<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>SPF\u30fbDKIM\u30fbDMARC\u306e\u6bd4\u8f03\u4e00\u89a7<\/strong><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u624b\u9806<\/strong> <\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8b\u524d\u6e96\u5099 \uff0d \u73fe\u72b6\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p>\u8a2d\u5b9a\u3092\u59cb\u3081\u308b\u524d\u306b\u3001\u73fe\u72b6\u3092\u628a\u63e1\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u8a2d\u5b9a\u524d\u306b\u78ba\u8a8d\u3057\u3066\u304a\u304d\u305f\u3044\u4e8b\u9805\u306f\u3001\u4ee5\u4e0b\u306e3\u70b9\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<ol type=\"1\" start=\"1\">\n<li><strong>\u5229\u7528\u4e2d\u306eDNS\u7ba1\u7406\u30c4\u30fc\u30eb<\/strong>\uff1a\u30c9\u30e1\u30a4\u30f3\u306eDNS\u3092\u3069\u3053\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\uff08\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u3001\u30c9\u30e1\u30a4\u30f3\u767b\u9332\u4f1a\u793e\u3001Cloudflare\u306a\u3069\uff09<\/li>\n<\/ol>\n\n\n\n<p><strong>\u4eca\u56de\u306f<a id=\"vn_cta_lp_oners\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/one.value-domain.com\/rs\" target=\"_blank\" rel=\"noopener noreferrer\">One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/a>\u306e\u7ba1\u7406\u753b\u9762\u3092\u4f7f\u3063\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<ol type=\"1\" start=\"2\">\n<li><strong>\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5143<\/strong>\uff1aWordPress\u304b\u3089\u9001\u4fe1\u3001\u72ec\u81ea\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3001Google\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9\u3001\u5916\u90e8\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u3001\u3069\u3053\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li><strong>\u65e2\u5b58\u306eSPF\u30fbDKIM\u306e\u8a2d\u5b9a\u6709\u7121<\/strong>\uff1aMXToolbox\uff08\u5f8c\u8ff0\uff09\u3067\u73fe\u72b6\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059<\/li>\n<\/ol>\n\n\n\n<p>\u8907\u6570\u306e\u30b5\u30fc\u30d3\u30b9\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u3044\u308b\u5834\u5408\uff08\u4f8b\uff1a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\uff0bSendGrid\uff0bWordPress\uff09\u306f\u3001\u5404\u30b5\u30fc\u30d3\u30b9\u304c\u6307\u5b9a\u3059\u308bSPF\u30ec\u30b3\u30fc\u30c9\u3092include\u69cb\u6587\u3067\u3059\u3079\u3066\u542b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30c6\u30c3\u30d71\uff1aSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\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>SPF\u30ec\u30b3\u30fc\u30c9\u306fDNS\u306bTXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>1.<a id=\"vn_cta_lp_oners\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/one.value-domain.com\/rs\" target=\"_blank\" rel=\"noopener noreferrer\">One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/a>\u306b\u30ed\u30b0\u30a4\u30f3\u3057\u3001\u30db\u30fc\u30e0\u753b\u9762\u306e\u300c\u30b5\u30fc\u30d0\u30fc\u300d\uff1e\u300cOne \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u300d\uff1e\u300c\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57526\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-1.png\" alt=\"One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u753b\u9762\"><\/p>\n\n\n\n<p>2. \u8a2d\u5b9a\u3059\u308b\u30b5\u30fc\u30d0\u30fc\u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u300c\u30b5\u30fc\u30d0\u30fc\u30d1\u30cd\u30eb\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57527\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-2.png\" alt=\"\u30b5\u30fc\u30d0\u30fc\u30d1\u30cd\u30eb\u9078\u629e\"><\/p>\n\n\n\n<p>3.\u300c\u30b5\u30fc\u30d0\u30fc\u5168\u4f53\u8a2d\u5b9a\u300d\uff1e\u300c\u30c9\u30e1\u30a4\u30f3\u5168\u4f53\u7ba1\u7406\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3001\u8a2d\u5b9a\u3057\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002\uff08\u4f8b\u3067\u306f\u30c9\u30e1\u30a4\u30f3\u540d\uff1amyblog.sco.jp\u3092\u8a2d\u5b9a\uff09<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57528\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-3.png\" alt=\"\u30c9\u30e1\u30a4\u30f3\u306e\u9078\u629e\"><\/p>\n\n\n\n<p>4.\u753b\u9762\u4e0b\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30ea\u30f3\u30af\u304b\u3089\u300c\u30e1\u30fc\u30eb\u7ba1\u7406\u300d\uff1e\u300cSPF\u7ba1\u7406\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57529\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-4.png\" alt=\"SPF\u7ba1\u7406\u9078\u629e\"><\/p>\n\n\n\n<p>5.\u64cd\u4f5c\u6b04\u306e\u300c\u5909\u66f4\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57530\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-5.png\" alt=\"SPF\u8a2d\u5b9a\u5909\u66f4\"><\/p>\n\n\n\n<p>\u203b\u30c9\u30e1\u30a4\u30f3\u540d\u304cValue Domain \u63d0\u4f9b\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3067\u306a\u3044\u5834\u5408\u3001\u300c\u5909\u66f4\u300d\u30dc\u30bf\u30f3\u306f\u300c\u64cd\u4f5c\u3067\u304d\u307e\u305b\u3093\u300d\u3068\u8868\u793a\u3055\u308c\u8a2d\u5b9a\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u305f\u3068\u3048\u3070Cloudflare\u7b49\u306e\u5916\u90e8\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3067\u3059\u3002\u3053\u306e\u5834\u5408\u306f\u5916\u90e8\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u7ba1\u7406\u4e0b\u3067SPF\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u203b\u30c9\u30e1\u30a4\u30f3\u540d\uff1amyblog.sco.jp\u306f<a href=\"https:\/\/www.value-domain.com\/media\/a-record\/\" target=\"_blank\" rel=\"noreferrer noopener\">A\u30ec\u30b3\u30fc\u30c9<\/a>\u3067DNS\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002CNAME\u30ec\u30b3\u30fc\u30c9\u3067\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u300c\u64cd\u4f5c\u3067\u304d\u307e\u305b\u3093\u300d\u3068\u8868\u793a\u3055\u308c\u3001\u8a2d\u5b9a\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>6.\u300cSPF\u8a2d\u5b9a\u306e\u5229\u7528\u6709\u7121\u300d\u3092ON\u306b\u3057\u3066\u300c\u5909\u66f4\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57531\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-6.png\" alt=\"SPF\u8a2d\u5b9a\u5229\u7528\u6709\u7121ON\"><\/p>\n\n\n\n<p><strong>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u5024\u306e\u4f8b\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><td><strong>\u9805\u76ee<\/strong><\/td><td><strong>\u5024<\/strong><\/td><\/tr><\/thead><tbody><tr><td>\u30bf\u30a4\u30d7<\/td><td>TXT<\/td><\/tr><tr><td>\u30db\u30b9\u30c8\u540d\uff08\u540d\u524d\uff09<\/td><td>@\uff08\u30eb\u30fc\u30c8\u30c9\u30e1\u30a4\u30f3\uff09<\/td><\/tr><tr><td>\u5024\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\uff09<\/td><td>v=spf1 include:\u5229\u7528\u30b5\u30fc\u30d3\u30b9\u306eSPF ~all<\/td><\/tr><tr><td>TTL<\/td><td>3600\uff081\u6642\u9593\uff09<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">SPF\u30ec\u30b3\u30fc\u30c9\u8a2d\u5b9a\u5024<\/figcaption><\/figure>\n\n\n\n<p><strong>\u4ee3\u8868\u7684\u306a\u30b5\u30fc\u30d3\u30b9\u306eSPF\u30a4\u30f3\u30af\u30eb\u30fc\u30c9\u5024\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><td><strong>\u30b5\u30fc\u30d3\u30b9<\/strong><\/td><td><strong>include<\/strong><strong>\u306e\u5024<\/strong><\/td><\/tr><\/thead><tbody><tr><td>Google\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9<\/td><td>include:_spf.google.com<\/td><\/tr><tr><td>\u3055\u304f\u3089\u306e\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/td><td>a:www****.sakura.ne.jp\uff08\u5951\u7d04\u3054\u3068\u306b\u7570\u306a\u308b\u30db\u30b9\u30c8\u540d\u3092\u6307\u5b9a\u3001\u56fa\u5b9a\u306einclude\u30c9\u30e1\u30a4\u30f3\u306a\u3057\uff09<\/td><\/tr><tr><td>SendGrid<\/td><td>include:sendgrid.net<\/td><\/tr><tr><td>Amazon SES<\/td><td>include:amazonses.com<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>SPF\u30a4\u30f3\u30af\u30eb\u30fc\u30c9\u5024<\/strong><\/figcaption><\/figure>\n\n\n\n<p><strong>\u6ce8\u610f\u70b9\uff1a<\/strong> SPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001DNS\u306b\u767b\u9332\u3055\u308c\u308b\u300c\u30ec\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7\u300d\u3068\u3057\u3066\u306f&nbsp;<strong>TXT\u30ec\u30b3\u30fc\u30c9<\/strong>&nbsp;\u306e\u4e00\u7a2e\u3067\u3042\u308a\u3001\u305d\u306e\u5185\u5bb9\uff08\u5024\uff09\u3068\u3057\u3066SPF\u306e\u8a2d\u5b9a\u60c5\u5831\u304c\u8a18\u8ff0\u3055\u308c\u307e\u3059\u30021\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u3064\u304d1\u3064\u3060\u3051\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002\u8907\u6570\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u3046\u5834\u5408\u306f\u30011\u884c\u306b\u307e\u3068\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-lightyellow-background-color has-background\"><code>v=spf1 a mx include:_spf.rs00012.vdone.jp include:_spf.vdone.jp include:_spf.google.com ~all<\/code><\/p>\n\n\n\n<p>SPF\u8a2d\u5b9a\u3067Google\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306fGmail\u8a31\u53ef\u306e\u8ffd\u52a0\u3092\u62bc\u3059\u3068\u81ea\u52d5\u7684\u306binclude:_spf.google.com\u3092\u8ffd\u52a0\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u305d\u306e\u4ed6\u306f\u624b\u52d5\u3067\u8ffd\u52a0\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57534\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-9.png\" alt=\"Gmail\u8a31\u53ef\u306e\u8ffd\u52a0\"><\/p>\n\n\n\n<p>&nbsp;&nbsp;\u307e\u305f\u3001SPF\u306einclude\u30c1\u30a7\u30fc\u30f3\u306f<strong>\u6700\u592710\u56de<\/strong>\u307e\u3067\u3068\u3044\u3046\u5236\u9650\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3092\u8d85\u3048\u308b\u3068SPF\u304c\u6a5f\u80fd\u3057\u306a\u304f\u306a\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>7.SPF\u7ba1\u7406\u753b\u9762\u3067\u8a2d\u5b9a\u5185\u5bb9\u304cON\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57544\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-18.png\" alt=\"SPF\u7ba1\u7406\u8a2d\u5b9a\u6e08\u307f\"><\/p>\n\n\n\n<p>8.DNS\u767b\u9332\u7d50\u679c\u306e\u78ba\u8a8d\u3092\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-58036\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-7.png\" alt=\"\u30c9\u30e1\u30a4\u30f3\u8a2d\u5b9a\u753b\u9762\"><\/p>\n\n\n\n<p>TXT\u30ec\u30b3\u30fc\u30c9\u3067\u540d\u524dmyblog\u3068\u3057\u3066v=spf1..\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><a id=\"vn_cta_lp_oners\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/one.value-domain.com\/rs\" target=\"_blank\" rel=\"noopener noreferrer\">One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/a>\u306a\u3089\u3001DNS\u306e\u77e5\u8b58\u304c\u306a\u304f\u3066\u3082\u30c8\u30b0\u30eb\u3092ON\u306b\u3059\u308b\u3060\u3051\u3067\u8a2d\u5b9a\u304c\u5b8c\u4e86\u3057\u307e\u3059\u3002TXT\u30ec\u30b3\u30fc\u30c9\u3092\u81ea\u5206\u3067\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30c6\u30c3\u30d72\uff1aDKIM\u3092\u8a2d\u5b9a\u3059\u308b<\/h3>\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>1.\u753b\u9762\u4e0b\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30ea\u30f3\u30af\u304b\u3089\u300c\u30e1\u30fc\u30eb\u7ba1\u7406\u300d\uff1e\u300cDKIM\u8a2d\u5b9a\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57535\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-10.png\" alt=\"DKIM\u7ba1\u7406\"><\/p>\n\n\n\n<p>2.\u64cd\u4f5c\u6b04\u306e\u300cDKIM\u8a2d\u5b9a\u8868\u793a\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57536\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-11.png\" alt=\"DKIM\u8a2d\u5b9a\u8868\u793a\"><\/p>\n\n\n\n<p>3.DKIM\u8a2d\u5b9a\u306e\u5185\u5bb9\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57537\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-12.png\" alt=\"DKIM\u8a2d\u5b9a\u306e\u5185\u5bb9\"><\/p>\n\n\n\n<p>DKIM\u306e\u8a2d\u5b9a\u306f\u5229\u7528\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u3063\u3066\u65b9\u6cd5\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u591a\u304f\u306e\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3084\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u304b\u3089DKIM\u3092\u6709\u52b9\u5316\u3059\u308b\u3060\u3051\u3067\u81ea\u52d5\u7684\u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u304c\u3001<strong>One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u81ea\u52d5\u3067\u8ffd\u52a0\u3055\u308c\u307e\u305b\u3093\u306e\u3067\u3001<\/strong>\u3054\u5229\u7528\u306e\u30c9\u30e1\u30a4\u30f3\u306eDNS\u60c5\u5831\u306b\u3001\u8868\u793a\u3055\u308c\u305fDKIM\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002DNS\u8ffd\u52a0\u65b9\u6cd5\u306f\u300c<a rel=\"noreferrer noopener\" href=\"https:\/\/one.value-domain.com\/help\/manual\/domain\/dns\" target=\"_blank\">DNS\u8a2d\u5b9a<\/a>\u300d\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57538\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-13.png\" alt=\"DKIM\u306eDNS\u8ffd\u52a0\u8a2d\u5b9a\"><\/p>\n\n\n\n<p>\u203bDKIM\u30ad\u30fc\u3067\u6700\u5f8c\u306b;(\u30bb\u30df\u30b3\u30ed\u30f3)\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u4ed5\u69d8\u4e0a\u7121\u3044\u65b9\u304c\u30d9\u30bf\u30fc\u306a\u306e\u3067\u524a\u9664\u3057\u3066\u767b\u9332\u3057\u307e\u3059\u3002\u3042\u3063\u3066\u3082\u307b\u307c\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>4.DKIM\u7ba1\u7406\u753b\u9762\u3067\u8a2d\u5b9a\u72b6\u6cc1\u304c\u6b63\u5e38\u3068\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57545\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-19.png\" alt=\"DKIM\u7ba1\u7406\u753b\u9762\u3067\u8a2d\u5b9a\u72b6\u6cc1\u304c\u6b63\u5e38\"><\/p>\n\n\n\n<p><strong>DKIM\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u4f8b\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><td><strong>\u9805\u76ee<\/strong><\/td><td><strong>\u5024<\/strong><\/td><\/tr><\/thead><tbody><tr><td>\u30bf\u30a4\u30d7<\/td><td>TXT<\/td><\/tr><tr><td>\u30db\u30b9\u30c8\u540d<\/td><td>default._domainkey\uff08\u30bb\u30ec\u30af\u30bf\u540d\u306f\u4efb\u610f\uff09<\/td><\/tr><tr><td>\u5024<\/td><td>v=DKIM1; k=rsa; p=MIIBIjANBg...\uff08\u516c\u958b\u9375\uff09<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>DKIM\u30ec\u30b3\u30fc\u30c9<\/strong>\u8a2d\u5b9a\u5024<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30c6\u30c3\u30d73\uff1aDMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b<\/h3>\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>\u203b\u672c\u30b9\u30c6\u30c3\u30d7\u306f\u5916\u90e8DNS\u3067\u7ba1\u7406\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u624b\u9806\u3067\u3059\u3002One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u5229\u7528\u8005\u306f\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d74\u306e\u753b\u9762\u64cd\u4f5c\u3060\u3051\u3067\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>SPF\u3068DKIM\u306e\u8a2d\u5b9a\u304c\u5b8c\u4e86\u3057\u305f\u3089\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u6700\u521d\u306fp=none\uff08\u76e3\u8996\u30e2\u30fc\u30c9\uff09\u304b\u3089\u59cb\u3081\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8ffd\u52a0\u9805\u76ee\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><td><strong>\u9805\u76ee<\/strong><\/td><td><strong>\u5024<\/strong><\/td><\/tr><\/thead><tbody><tr><td>\u30bf\u30a4\u30d7<\/td><td>TXT<\/td><\/tr><tr><td>\u30db\u30b9\u30c8\u540d<\/td><td>_dmarc<\/td><\/tr><tr><td>\u5024<\/td><td>v=DMARC1; p=none; rua=mailto:\u3042\u306a\u305f\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9<\/td><\/tr><tr><td>TTL<\/td><td>3600<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>DMARC\u30ec\u30b3\u30fc\u30c9<\/strong>\u8a2d\u5b9a\u5024<\/figcaption><\/figure>\n\n\n\n<p>rua=mailto\u306b\u6307\u5b9a\u3057\u305f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u3001DMARC\u306e\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u304c\u5c4a\u304f\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u304b\u3092\u628a\u63e1\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b9\u30c6\u30c3\u30d74\uff1aDMARC\u30dd\u30ea\u30b7\u30fc\u3092\u6bb5\u968e\u7684\u306b\u5f37\u5316\u3059\u308b<\/h3>\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>1.\u753b\u9762\u4e0b\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u30ea\u30f3\u30af\u304b\u3089\u300c\u30e1\u30fc\u30eb\u7ba1\u7406\u300d\uff1e\u300cDMARC\u8a2d\u5b9a\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57539\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-14.png\" alt=\"DMARC\u7ba1\u7406\"><\/p>\n\n\n\n<p>2.\u64cd\u4f5c\u6b04\u306e\u300c\u7de8\u96c6\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<br><img decoding=\"async\" class=\"wp-image-57540\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-15.png\" alt=\"DMARC\u7de8\u96c6\"><br><\/p>\n\n\n\n<p>3.DMARC\u8a2d\u5b9a \/ \u30ec\u30dd\u30fc\u30c8\u901a\u77e5\u8a2d\u5b9a\u3092\u9078\u629e\u3057\u300c\u8a2d\u5b9a\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57541\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-16.png\" alt=\"DMARC\u8a2d\u5b9a\u30ec\u30dd\u30fc\u30c8\u901a\u77e5\u8a2d\u5b9a\"><\/p>\n\n\n\n<p>DMARC\u306e\u30dd\u30ea\u30b7\u30fc\u306f\u3001\u6bb5\u968e\u7684\u306b\u5f37\u5316\u3057\u3066\u3044\u304f\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6700\u521d\u306f\u300c\u4f55\u3082\u3057\u306a\u3044\u300d\u3001\u30ec\u30dd\u30fc\u30c8\u300cON\u300d\u3001\u901a\u77e5\u5148\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3057\u3066\u3001\u753b\u9762\u4e0b\u90e8\u306e\u300c\u8a2d\u5b9a\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002DNS\u306b\u306f\u81ea\u52d5\u3067\u767b\u9332\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57542\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-17.png\" alt=\"DMARC\u8a2d\u5b9a\u30ec\u30dd\u30fc\u30c8\u901a\u77e5\u8a2d\u5b9aON\"><\/p>\n\n\n\n<p>\u203b\u901a\u77e5\u5148\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306fXXX@\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u5bfe\u8c61\u5916\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3059\u308b\u3068\u8b66\u544a\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u3066\u767b\u9332\u3067\u304d\u307e\u305b\u3093\u3002<br>\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u306f\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067\u3059\u306e\u3067\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3082\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>4.DMARC\u7ba1\u7406\u753b\u9762\u3067\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u304c\u300c\u4f55\u3082\u3057\u306a\u3044\u300d\u3001\u30ec\u30dd\u30fc\u30c8\u901a\u77e5\u8a2d\u5b9a\u304cON\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57547\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-20.png\" alt=\"DMARC\u7ba1\u7406\u753b\u9762\u3067\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u78ba\u8a8d\"><\/p>\n\n\n\n<p>5.DNS\u767b\u9332\u7d50\u679c\u306e\u78ba\u8a8d\u3092\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-58035\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-21.png\" alt=\"DMARCDNS\u8a2d\u5b9a\u8ffd\u52a0\"><\/p>\n\n\n\n<p>TXT\u30ec\u30b3\u30fc\u30c9\u3067\u540d\u524d_dmarc.myblog\u3068\u3057\u3066v=DMARC1;\u304c\u8ffd\u52a0\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong><a id=\"vn_cta_lp_oners\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/one.value-domain.com\/rs\" target=\"_blank\" rel=\"noopener noreferrer\">One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/a>\u306a\u3089\u3001DMARC\u3082\u300c\u7de8\u96c6\u300d\u30dc\u30bf\u30f3\u304b\u3089\u30dd\u30ea\u30b7\u30fc\u3092\u9078\u3093\u3067\u300c\u8a2d\u5b9a\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3060\u3051\u3067\u3001DNS\u767b\u9332\u307e\u3067\u5b8c\u4e86\u3057\u307e\u3059\u3002TXT\u30ec\u30b3\u30fc\u30c9\u3092\u76f4\u63a5\u7de8\u96c6\u3059\u308b\u624b\u9593\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n<\/div><\/div>\n\n\n\n<p>DMARC\u306e\u30dd\u30ea\u30b7\u30fc\u3092p=quarantine\u3084p=reject\u307e\u3067\u5f15\u304d\u4e0a\u3052\u305f\u3089\u3001\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3068\u3057\u3066\u30e1\u30fc\u30eb\u306b\u30d6\u30e9\u30f3\u30c9\u30ed\u30b4\u3092\u8868\u793a\u3059\u308b\u300cBIMI\u300d\u306e\u5c0e\u5165\u3082\u691c\u8a0e\u3067\u304d\u307e\u3059\u3002BIMI\u306fSPF\u30fbDKIM\u30fbDMARC\u306e\u8a8d\u8a3c\u3092\u571f\u53f0\u3068\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3001\u8a2d\u5b9a\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"blogcard\"><a href=\"https:\/\/www.value-domain.com\/media\/bimi-about\/\" data-blogcard=\"1\"><\/a><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u8a2d\u5b9a\u5f8c\u306e\u78ba\u8a8d\u65b9\u6cd5<\/strong> <\/h2>\n\n\n\n<p>\u8a2d\u5b9a\u5f8c\u306f\u3001\u6b63\u3057\u304f\u6a5f\u80fd\u3057\u3066\u3044\u308b\u304b\u3092\u5fc5\u305a\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">MXToolbox\u3067\u8a8d\u8a3c\u72b6\u614b\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p><a href=\"https:\/\/mxtoolbox.com\/\">MXToolbox<\/a> \u306f\u3001SPF\u30fbDKIM\u30fbDMARC\u306e\u8a2d\u5b9a\u3092\u7121\u6599\u3067\u78ba\u8a8d\u3067\u304d\u308b\u5b9a\u756a\u30c4\u30fc\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>SPF\u306e\u8a2d\u5b9a\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<ol type=\"1\" start=\"1\" class=\"has-lightyellow-background-color has-background\">\n<li>MXToolbox\uff08<a href=\"https:\/\/mxtoolbox.com\/spf.aspx\">https:\/\/mxtoolbox.com\/spf.aspx<\/a>\uff09\u306b\u30a2\u30af\u30bb\u30b9<\/li>\n\n\n\n<li>\u691c\u7d22\u6b04\u306b\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\uff08\u4f8b\uff1aexample.com\uff09<\/li>\n\n\n\n<li>\u300cSPF Record Lookup\u300d\u3092\u30af\u30ea\u30c3\u30af<\/li>\n\n\n\n<li>\u300cv=spf1\u300d\u3067\u59cb\u307e\u308b\u30ec\u30b3\u30fc\u30c9\u304c\u8868\u793a\u3055\u308c\u308c\u3070\u8a2d\u5b9a\u6e08\u307f<\/li>\n<\/ol>\n\n\n\n<p>\u78ba\u8a8d\u3057\u305f\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-58037\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-22.png\" alt=\"SPF\u52b9\u679c\u78ba\u8a8d\"><\/p>\n\n\n\n<p>\u5168\u3066\u306e\u30c1\u30a7\u30c3\u30af\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u30b0\u30ea\u30fc\u30f3\u3067\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3082\u3057\u4e0d\u6574\u5408\u306e\u9805\u76ee\u304c\u3042\u308c\u3070\u8d64\u00d7\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>DKIM\u306e\u8a2d\u5b9a\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<ol type=\"1\" start=\"1\" class=\"has-lightyellow-background-color has-background\">\n<li>MXToolbox\uff08<a href=\"https:\/\/mxtoolbox.com\/dkim.aspx\">https:\/\/mxtoolbox.com\/dkim.aspx<\/a>\uff09\u306b\u30a2\u30af\u30bb\u30b9<\/li>\n\n\n\n<li>\u30bb\u30ec\u30af\u30bf\u540d\u3068\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b<br>default._domainkey.myblog\u306e\u5834\u5408\u3001myblog.sco.jp: default\u3068\u5165\u529b\u3057\u307e\u3059\u3002myblog.sco.jp\u306f\u8457\u8005\u304c\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u30db\u30b9\u30c8\u540d\u3067\u3059\u306e\u3067\u5404\u81ea\u7f6e\u304d\u63db\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n\n\n\n<li>\u300cDKIM Record Lookup\u300d\u3092\u30af\u30ea\u30c3\u30af<\/li>\n\n\n\n<li>\u516c\u958b\u9375\u60c5\u5831\u304c\u8868\u793a\u3055\u308c\u308c\u3070\u8a2d\u5b9a\u6e08\u307f<\/li>\n<\/ol>\n\n\n\n<p>\u78ba\u8a8d\u3057\u305f\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57552\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-24.png\" alt=\"DKIM\u52b9\u679c\u78ba\u8a8d\"><\/p>\n\n\n\n<p>\u5168\u3066\u306e\u30c1\u30a7\u30c3\u30af\u30b9\u30c6\u30fc\u30bf\u30b9\u304c\u30b0\u30ea\u30fc\u30f3\u3067\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3082\u3057\u4e0d\u6574\u5408\u306e\u9805\u76ee\u304c\u3042\u308c\u3070\u8d64\u00d7\u3067\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>DMARC\u306e\u8a2d\u5b9a\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<ol type=\"1\" start=\"1\" class=\"has-lightyellow-background-color has-background\">\n<li>MXToolbox\uff08<a href=\"https:\/\/mxtoolbox.com\/dmarc.aspx\">https:\/\/mxtoolbox.com\/dmarc.aspx<\/a>\uff09\u306b\u30a2\u30af\u30bb\u30b9<\/li>\n\n\n\n<li>\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\u3057\u3066\u300cDMARC Lookup\u300d\u3092\u30af\u30ea\u30c3\u30af<\/li>\n\n\n\n<li>v=DMARC1\u3067\u59cb\u307e\u308b\u30ec\u30b3\u30fc\u30c9\u304c\u8868\u793a\u3055\u308c\u308c\u3070\u8a2d\u5b9a\u6e08\u307f<\/li>\n<\/ol>\n\n\n\n<p>\u78ba\u8a8d\u3057\u305f\u7d50\u679c\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57557\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-28.png\" alt=\"DMARC\u4fee\u6b63\u5f8c\u306e\u52b9\u679c\u78ba\u8a8d\"><\/p>\n\n\n\n<p>\u6b63\u3057\u304f\u8a8d\u8b58\u3055\u308c\u307e\u3057\u305f\u3002\u8d64\u00d7\u300cDMARC Policy Not Enabled\u300d\u3068\u306a\u3063\u3066\u3044\u308b\u306e\u306f\u3001\u30d5\u30a7\u30fc\u30ba1\u306e\u8a2d\u5b9a\u3067<code><strong>p=none<\/strong><\/code><strong>\uff08\u76e3\u8996\u30e2\u30fc\u30c9\uff09\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3089\u3067\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Gmail\u3067\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3057\u30e1\u30fc\u30eb\u306e\u539f\u6587\u8868\u793a\u3067\u554f\u984c\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p>\u5b9f\u969b\u306b\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u304cSPF\u30fbDKIM\u3092\u901a\u904e\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306f\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u308f\u304b\u308a\u307e\u3059\u3002Gmail\u3067\u306f\u30e1\u30fc\u30eb\u306e\u539f\u6587\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u3067\u5bb9\u6613\u306b\u78ba\u8a8d\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b9f\u969b\u306bmyblog.sco.jp\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3066\u307f\u307e\u3059\u3002\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u624b\u6bb5\u306f\u3044\u308d\u3044\u308d\u3042\u308a\u307e\u3059\u304c\u3001WordPress\u3067\u30db\u30fc\u30e0\u30da\u30fc\u30b8\u3092\u904b\u7528\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306a\u3089\u304a\u554f\u3044\u5408\u308f\u305b\u30da\u30fc\u30b8\u3082\u8a2d\u7f6e\u3055\u308c\u3066\u3044\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u305d\u306e\u30da\u30fc\u30b8\u304b\u3089\u30c6\u30b9\u30c8\u3067\u53d7\u4ed8\u30e1\u30fc\u30eb\u3092Gmail\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u8fd4\u4fe1\u3059\u308b\u3088\u3046\u306b\u3059\u308c\u3070\u3088\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7b46\u8005\u3082WordPress\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u6b21\u306e\u65b9\u6cd5\u3067\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u7ba1\u7406\u8005\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092Gmail\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u66f4\u3057\u3066\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002Gmail\u5b9b\u3066\u306b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5909\u66f4\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u5c4a\u304f\u306e\u3067\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>WordPress\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u6b21\u306e\u70b9\u306b\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>One\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3067WordPress\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3068\u3001\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u5229\u7528\u3057\u3066\u3044\u3066\u3082\u3001\u5dee\u51fa\u4eba\u306fzzzzz@xxxx.vdone.jp\u306b\u5185\u90e8\u8a2d\u5b9a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u307e\u307e\u3060\u3068\u6298\u89d2myblog.sco.jp\u3067SPF\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u3066\u3082zzzzz@xxxx.vdone.jp\u304b\u3089\u6765\u305f\u3053\u3068\u306b\u306a\u308a\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/strong><\/p>\n\n\n\n<p>\u5dee\u51fa\u4eba\u3092xxx@myblog.sco.jp\u306b\u5909\u66f4\u3059\u308b\u306b\u306f\u3044\u304f\u3064\u304b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u304c\u3001WP Mail SMTP\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u5165\u308c\u3066\u8a2d\u5b9a\u3059\u308b\u306e\u304c\u624b\u3063\u53d6\u308a\u65e9\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57558\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-29.png\" alt=\"WP Mail SMTP\u30d7\u30e9\u30b0\u30a4\u30f3\"><\/p>\n\n\n\n<p>\u30fb\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u3063\u3066\u304a\u554f\u3044\u5408\u308f\u305b\u30da\u30fc\u30b8\u3092\u69cb\u7bc9\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u9001\u4fe1\u5143\u3092\u4eca\u56deSPF\u8a2d\u5b9a\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u8a2d\u5b9a\u3057\u3066\u304a\u3044\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><strong>\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u3092\u78ba\u8a8d\u3059\u308b\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/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 #006edc;border-radius:0px;padding:0px 15px 0px 15px\">\n<p>1. Gmail\u3067\u78ba\u8a8d\u3057\u305f\u3044\u30e1\u30fc\u30eb\u3092\u958b\u304f<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57559\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-30.png\" alt=\"\u53d7\u4fe1\u30e1\u30fc\u30eb\"><\/p>\n\n\n\n<p>2. \u53f3\u4e0a\u306e\u300c\ufe19\uff08\u305d\u306e\u4ed6\uff09\u300d\u2192\u300c\u539f\u6587\u3092\u8868\u793a\u300d\u3092\u30af\u30ea\u30c3\u30af<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57560\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-31.png\" alt=\"\u30e1\u30fc\u30eb\u306e\u539f\u6587\u8868\u793a\"><\/p>\n\n\n\n<p>3. \u8868\u793a\u3055\u308c\u305f\u753b\u9762\u306e\u78ba\u8a8d<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-image-57561\" style=\"width: 640px\" src=\"https:\/\/media.value-domain.com\/wp-content\/uploads\/sites\/2\/2026\/07\/domain-authentication-32.png\" alt=\"\u30e1\u30fc\u30eb\u539f\u6587\u5185\u5bb9\"><\/p>\n\n\n\n<p><strong>\u8a8d\u8a3c\u7d50\u679c\u306e\u898b\u65b9\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><td><strong>\u8868\u793a<\/strong><\/td><td><strong>\u610f\u5473<\/strong><\/td><\/tr><\/thead><tbody><tr><td>SPF=PASS<\/td><td>SPF\u8a8d\u8a3c\u6210\u529f<\/td><\/tr><tr><td>DKIM=PASS<\/td><td>DKIM\u8a8d\u8a3c\u6210\u529f<\/td><\/tr><tr><td>DMARC=PASS<\/td><td>DMARC\u8a8d\u8a3c\u6210\u529f<\/td><\/tr><tr><td>SPF=FAIL,NONE<\/td><td>SPF\u8a8d\u8a3c\u5931\u6557\uff08\u8a2d\u5b9a\u3092\u898b\u76f4\u3059\uff09<\/td><\/tr><tr><td>DKIM=FAIL<\/td><td>DKIM\u8a8d\u8a3c\u5931\u6557\uff08\u516c\u958b\u9375\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\uff09<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">SPF,DKIM,DMARC\u306e\u8868\u793a\u3068\u610f\u5473<\/figcaption><\/figure>\n\n\n\n<p>3\u3064\u3059\u3079\u3066\u306b PASS \u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u6b63\u3057\u304f\u6a5f\u80fd\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u307e\u3068\u3081\uff1a\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u8a2d\u5b9a\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/strong><\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u4f7f\u3063\u3066\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u72b6\u6cc1\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\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 #006edc;border-radius:0px;padding:0px 15px 0px 15px\">\n<p><strong>\u8a2d\u5b9a\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/strong><\/p>\n\n\n\n<p><strong>\u4e8b\u524d\u78ba\u8a8d<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>[ ] DNS\u7ba1\u7406\u30c4\u30fc\u30eb\uff08\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u7b49\uff09\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b<\/li>\n\n\n\n<li>[ ] \u5229\u7528\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u3059\u3079\u3066\u628a\u63e1\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>[ ] MXToolbox\u3067\u73fe\u72b6\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n<\/ul>\n\n\n\n<p><strong>SPF<\/strong><strong>\u8a2d\u5b9a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>[ ] TXT\u30ec\u30b3\u30fc\u30c9\u306bv=spf1\u3067\u59cb\u307e\u308bSPF\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u305f<\/li>\n\n\n\n<li>[ ] \u5229\u7528\u3057\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092include:\u3067\u6307\u5b9a\u3057\u305f<\/li>\n\n\n\n<li>[ ] ~all\u307e\u305f\u306f-all\u3067\u7d42\u308f\u3089\u305b\u305f<\/li>\n\n\n\n<li>[ ] SPF\u30ec\u30b3\u30fc\u30c9\u304c1\u3064\u3060\u3051\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n\n\n\n<li>[ ] MXToolbox\u3067SPF\u304c\u6b63\u3057\u304f\u8a8d\u8b58\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n<\/ul>\n\n\n\n<p><strong>DKIM<\/strong><strong>\u8a2d\u5b9a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>[ ] \u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u7ba1\u7406\u753b\u9762\u3067DKIM\u3092\u6709\u52b9\u5316\u3057\u305f<\/li>\n\n\n\n<li>[ ] \u516c\u958b\u9375\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092DNS\u306b\u8ffd\u52a0\u3057\u305f<\/li>\n\n\n\n<li>[ ] MXToolbox\u3067DKIM\u30ec\u30b3\u30fc\u30c9\u304c\u78ba\u8a8d\u3067\u304d\u305f<\/li>\n<\/ul>\n\n\n\n<p><strong>DMARC<\/strong><strong>\u8a2d\u5b9a<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>[ ] _dmarc\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u305f<\/li>\n\n\n\n<li>[ ] \u6700\u521d\u306fp=none\u3067\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u304b\u3089\u958b\u59cb\u3057\u305f<\/li>\n\n\n\n<li>[ ] rua\u306b\u30ec\u30dd\u30fc\u30c8\u53d7\u4fe1\u7528\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3057\u305f<\/li>\n\n\n\n<li>[ ] DMARC\u30ec\u30dd\u30fc\u30c8\u3092\u78ba\u8a8d\u3057\u3001\u554f\u984c\u304c\u306a\u3044\u3053\u3068\u3092\u628a\u63e1\u3057\u305f<\/li>\n\n\n\n<li>[ ] \u6bb5\u968e\u7684\u306bp=quarantine\u2192p=reject\u3078\u30dd\u30ea\u30b7\u30fc\u3092\u5f37\u5316\u3057\u305f<\/li>\n<\/ul>\n\n\n\n<p><strong>\u6700\u7d42\u78ba\u8a8d<\/strong><\/p>\n\n\n\n<ul class=\"has-whitesmoke-background-color has-background\">\n<li>[ ] MXToolbox\u3067SPF\u30fbDKIM\u30fbDMARC\u3059\u3079\u3066\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n\n\n\n<li>[ ] \u5b9f\u969b\u306b\u9001\u3063\u305f\u30e1\u30fc\u30eb\u306e\u30d8\u30c3\u30c0\u30fc\u3067spf=pass\u30fbdkim=pass\u30fbdmarc=pass\u3092\u78ba\u8a8d\u3057\u305f<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u306f\u3001\u4e00\u5ea6\u884c\u3048\u3070\u307b\u307c\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u4e0d\u8981\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u65b0\u3057\u3044\u30e1\u30fc\u30eb\u9001\u4fe1\u30b5\u30fc\u30d3\u30b9\u3092\u8ffd\u52a0\u3057\u305f\u969b\u306b\u306f\u5fc5\u305aSPF\u30ec\u30b3\u30fc\u30c9\u3092\u66f4\u65b0\u3059\u308b\u3053\u3068\u3092\u5fd8\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u304c\u78ba\u5b9f\u306b\u5c4a\u304f\u74b0\u5883\u3092\u6574\u3048\u308b\u3053\u3068\u306f\u3001\u30d3\u30b8\u30cd\u30b9\u306e\u4fe1\u983c\u6027\u3092\u5b88\u308b\u3053\u3068\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3092\u53c2\u8003\u306b\u3001\u305c\u3072\u4eca\u65e5\u304b\u3089\u8a2d\u5b9a\u3092\u9032\u3081\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"has-lightyellow-background-color has-background\">\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3067\u306e\u30e1\u30fc\u30eb\u904b\u7528\u304b\u3089\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u307e\u3067\u4e00\u3064\u306e\u7ba1\u7406\u753b\u9762\u3067\u307e\u3068\u3081\u3066\u884c\u3044\u305f\u3044\u5834\u5408\u306f\u3001<a id=\"vn_cta_lp_oners\" class=\"ga_event_link\" style=\"color: #3366ff;\" href=\"https:\/\/one.value-domain.com\/rs\" target=\"_blank\" rel=\"noopener noreferrer\">One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc<\/a>\u304c\u304a\u3059\u3059\u3081\u3067\u3059\u3002<strong>\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u304c\u6c38\u4e45\u7121\u6599\u3067\u4ed8\u3044\u3066\u304f\u308b\u305f\u3081\u3001\u6708\u984d680\u5186\u301c\u3067\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u7121\u5236\u9650\u306b\u4f5c\u6210<\/strong>\u3067\u304d\u307e\u3059\u3002<br><br>\u521d\u671f\u8cbb\u75280\u5186\u30fb15\u65e5\u9593\u306e\u7121\u6599\u30c8\u30e9\u30a4\u30a2\u30eb\u3082\u3042\u308b\u306e\u3067\u3001\u6c17\u306b\u306a\u308b\u65b9\u306f\u305c\u3072\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"has-small-font-size\">\u203b\u30b5\u30fc\u30d0\u30fc\u5951\u7d04\u3068\u30bb\u30c3\u30c8\u306e\u5834\u5408\u3002\u5bfe\u8c61\u30c9\u30e1\u30a4\u30f3\u7b49\u306e\u6761\u4ef6\u306f\u516c\u5f0f\u30b5\u30a4\u30c8\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"has-text-align-center\"><div class=\"wp-block-buttons\"><div class=\"wp-block-button has-custom-width wp-block-button__width-100 btn-service vd\">\n<p class=\"txt\">\u307e\u305a\u306f\u300115\u65e5\u9593\u7121\u6599\u3067\u8a66\u3059<\/p>\n<a id=\"vn_cta_btn_lp_oners\" class=\"ga_event_link wp-block-button__link has-white-color\" href=\"https:\/\/one.value-domain.com\/rs\" style=\"background-color:#0f8eff\" target=\"_blank\" rel=\"noreferrer noopener\">One \u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u516c\u5f0f\u30b5\u30a4\u30c8\u3092\u307f\u308b<\/a><\/div><\/div><\/p>\n\n\n\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 class=\"has-inline-color\" style=\"color: #ff8c00;\">\u25bd\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u958b\u50ac\u4e2d\uff01<\/span><\/span><\/strong><\/mark><\/span><\/span><\/span><\/div>\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 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;\">\u30d0\u30ea\u30e5\u30fc\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u3001<\/span><\/span><\/span><\/span><\/div>\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 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 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;\">\u30c9\u30e1\u30a4\u30f3\u30fb\u30b5\u30fc\u30d0\u30fc\u540c\u6642\u5951\u7d04\u3067\u30c9\u30e1\u30a4\u30f3\u8cbb\u7528<span class=\"text-color\" style=\"color: #ff0000;\"><strong><span class=\"font-size\" style=\"font-size: 1.3em;\">\u6c38\u4e45\u7121\u6599<\/span>\uff08\u5e74\u9593\u6700\u5927<span class=\"font-size\" style=\"font-size: 1.em;\">3,889<\/span>\u5186\u304a\u5f97\uff09<\/strong><\/span><\/span><\/span><\/span><\/div>\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 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;\">\u306a\u3069\u304a\u5f97\u306a\u7279\u5178\u3084\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u304c\u76db\u308a\u3060\u304f\u3055\u3093\uff01<br \/><\/span><\/span><\/span><\/span><span style=\"background-color: papayawhip; color: #333;\"><span style=\"background-color: papayawhip; 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\u3002<span style=\"color: #333333;\">\u6700\u65b0\u306e\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306f<\/span><a style=\"color: ff0000;\" href=\"https:\/\/www.value-domain.com\/media\/2022campaign-all\/\"><strong><span class=\"font-size\" 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>\n\n\n\n<p>\u203b<a href=\"\/media\/user-note\/\" target=\"_blank\" >\u30e6\u30fc\u30b6\u30fc\u30ce\u30fc\u30c8<\/a>\u306e\u8a18\u4e8b\u306f\u3001\u5f0a\u793e\u30b5\u30fc\u30d3\u30b9\u3092\u3054\u5229\u7528\u306e\u304a\u5ba2\u69d8\u306b\u57f7\u7b46\u3044\u305f\u3060\u3044\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n<div style=\"border: 1px solid #8fa2b2; padding: 5px 20px; border-radius: 4px 4px 0 0; background: #8fa2b2;\"><span style=\"color: #ffffff;\">\u57f7\u7b46\u8005\uff1a\u82d7\u5834 \u7fd4\u69d8<\/span><\/div>\n<div style=\"border: 1px solid #8fa2b2; padding: 0px 20px; border-radius: 0 0 4px 4px; background: 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