{"id":2044,"date":"2020-11-05T10:38:38","date_gmt":"2020-11-05T01:38:38","guid":{"rendered":"https:\/\/ec2-54-238-200-5.ap-northeast-1.compute.amazonaws.com\/blog\/?p=2044"},"modified":"2026-05-20T15:05:58","modified_gmt":"2026-05-20T06:05:58","slug":"dkim%e3%81%a8%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=2044","title":{"rendered":"DKIM\u3068\u306f\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/11\/eyecatch-1.png\" alt=\"DKIM\u3068\u306f\uff1f\" width=\"100%\" class=\"aligncenter size-full wp-image-13278\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/11\/eyecatch-1.png 1158w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/11\/eyecatch-1-300x206.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/11\/eyecatch-1-768x529.png 768w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2020\/11\/eyecatch-1-1024x705.png 1024w\" sizes=\"(max-width: 1158px) 100vw, 1158px\" \/><\/p>\n<blockquote>\n<p>\u3053\u306e\u8a18\u4e8b\u306f <a href=\"https:\/\/sendgrid.com\/blog\/how-to-use-dkim-to-prevent-domain-spoofing\/\" target=\"_blank\">How to Use DKIM to Prevent Domain Spoofing<\/a> \u306e\u6284\u8a33\u3067\u3059\u3002<\/p>\n<\/blockquote>\n<p>1980\u5e74\u4ee3\u306b\u96fb\u5b50\u30e1\u30fc\u30eb\u3068SMTP\uff08Simpe Mail Transfer Protocol\uff09\u306e\u67a0\u7d44\u307f\u304c\u78ba\u7acb\u3057\u305f\u5f53\u521d\u3001\u30e1\u30fc\u30eb\u306e\u6b63\u5f53\u6027\u3092\u691c\u8a3c\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u5f53\u6642\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u3044\u305f\u306e\u306f\u9650\u3089\u308c\u305f\u5927\u4f01\u696d\u3084\u6559\u80b2\u6a5f\u95a2\u3060\u3051\u3060\u3063\u305f\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>\u3068\u3053\u308d\u304c\u96fb\u5b50\u30e1\u30fc\u30eb\u304c\u5e83\u307e\u308b\u3068\u3001\u60aa\u610f\u3042\u308b\u30e1\u30fc\u30eb\u3084\u30b9\u30d1\u30e0\u3092\u9001\u3063\u305f\u308a\u3001\u30c9\u30e1\u30a4\u30f3\u3092\u306a\u308a\u3059\u307e\u3057\u305f\u308a\u3059\u308b\u4e0d\u5c4a\u304d\u8005\u304c\u73fe\u308c\u307e\u3059\u3002\u3042\u308b\u8005\u306f\u6709\u540d\u306a\u30d6\u30e9\u30f3\u30c9\u3084\u9001\u4fe1\u8005\u3092\u9a19\u3063\u3066\u500b\u4eba\u60c5\u5831\u3092\u8fd4\u4fe1\u3055\u305b\u3088\u3046\u3068\u3057\u307e\u3057\u305f\u3002\u307e\u305f\u3042\u308b\u8005\u306f\u3001\u3042\u3089\u3086\u308b\u5b9b\u5148\u306b\u671b\u307e\u308c\u306a\u3044\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306a\u3001\u5f8c\u306b\u7c73\u56fd\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u9632\u6b62\u6cd5\u300c<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=4967\" rel=\"noopener\" target=\"_blank\">CAN-SPAM Act<\/a>\u300d\u3067\u7981\u6b62\u3055\u308c\u308b\u9001\u308a\u65b9\u3092\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>Tip: \u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3068\u306f\u3001\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u507d\u3063\u3066\u9001\u3089\u308c\u308b\u30e1\u30fc\u30eb\u306e\u3053\u3068\u3067\u3059\u3002\u307f\u306a\u3055\u3093\u304c\u30e1\u30fc\u30eb\u3092\u9001\u308b\u969b\u306f\u3001\u81ea\u8eab\u306e\u7ba1\u7406\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u3092\u7528\u3044\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3509\" rel=\"noopener\" target=\"_blank\">SPF<\/a>\u3001DKIM\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3137\" rel=\"noopener\" target=\"_blank\">DMARC<\/a>\u3068\u3044\u3063\u305f\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u306f\u3001\u3053\u306e\u3088\u3046\u306a\u60aa\u610f\u3042\u308b\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u7bb1\u306b\u5c4a\u304f\u3053\u3068\u3092\u9632\u3050\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<h3>\u4f55\u3092\u3059\u308b\u3082\u306e\uff1f<\/h3>\n<p>DKIM\uff08Domain Keys Identified Mail\uff09\u306f\u3001Cisco\u3068Yahoo\u304c\u63d0\u5531\u3057\u305f\u3001\u9001\u4fe1\u8005\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u300c\u7f72\u540d\u300d\u3092\u4ed8\u4e0e\u3067\u304d\u308b\u6697\u53f7\u6280\u8853\u3067\u3059\u3002\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u8005\u306f\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u7ba1\u7406\u3059\u308b\u9001\u4fe1\u8005\u304c\u8cac\u4efb\u3092\u6301\u3063\u3066\u9001\u4fe1\u3057\u305f\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3067\u304d\u307e\u3059\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u304cDKIM\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001Gmail\u3084Microsoft\u306a\u3069\u306e\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u53d7\u4fe1\u7bb1\u306b\u5c4a\u3051\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u3069\u3046\u3044\u3046\u4ed5\u7d44\u307f\uff1f<\/h3>\n<p>DKIM\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306e\u7ba1\u7406\u8005\u304c\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u3067\u3042\u308b\u3053\u3068\u3068\u3001\u30e1\u30fc\u30eb\u304c\u6539\u7ac4\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u304b\u3081\u307e\u3059\u3002DKIM\u306e\u8a8d\u8a3c\u306f\u4ee5\u4e0b\u306e2\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u304b\u3089\u306a\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u9001\u4fe1\u8005\u306f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306b\u79d8\u5bc6\u9375\u3092\u914d\u7f6e\u3057\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u304b\u3089\u96fb\u5b50\u7f72\u540d\u3092\u751f\u6210\u3059\u308b\u3002<\/li>\n<li>\u53d7\u4fe1\u30b5\u30fc\u30d0\u306f[DKIM\u30bb\u30ec\u30af\u30bf]._domainkey.[\u30c9\u30e1\u30a4\u30f3\u540d]\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u66f8\u304b\u308c\u305f\u516c\u958b\u9375\u3092\u53d6\u5f97\u3057\u3001\u9001\u3089\u308c\u3066\u304d\u305f\u96fb\u5b50\u7f72\u540d\u3092\u691c\u8a3c\u3059\u308b\u3002<\/li>\n<\/ol>\n<h3>\u3069\u3046\u3057\u3066\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u9632\u3052\u308b\u306e\uff1f<\/h3>\n<p>DKIM\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u30e1\u30fc\u30eb\u306b\u7f72\u540d\u3092\u4ed8\u4e0e\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308a\u3001\u3042\u306a\u305f\u304c\u30c9\u30e1\u30a4\u30f3\u306e\u8cac\u4efb\u8005\u3060\u3068\u8868\u660e\u3059\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u4ed6\u306e\u8ab0\u304b\u304c\u52dd\u624b\u306b\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3053\u3068\u3092\u6291\u6b62\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n<h3>\u8a2d\u5b9a\u3057\u305f\u65b9\u304c\u3044\u3044\uff1f<\/h3>\n<p>DKIM\u306f\u53d7\u4fe1\u5074\u304c\u9001\u4fe1\u8005\u306e\u8eab\u5143\u3092\u78ba\u8a8d\u3059\u308b\u624b\u6bb5\u306e\u4e00\u3064\u3067\u3059\u3002\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u591a\u304f\u306e\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u304c\u30e1\u30fc\u30eb\u3092<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=8654\" rel=\"noopener\" target=\"_blank\">\u30d6\u30ed\u30c3\u30af<\/a>\u3059\u308b\u305f\u3081\u3001\u9001\u308a\u305f\u3044\u5b9b\u5148\u306b\u5c4a\u304b\u306a\u3044\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u307b\u3093\u306e\u5c11\u3057\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3060\u3051\u3067\u30d3\u30b8\u30cd\u30b9\u304c\u6253\u6483\u3092\u53d7\u3051\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u304b\u3089\u3001DKIM\u306e\u91cd\u8981\u6027\u306f\u660e\u767d\u3067\u3059\u3002<\/p>\n<h3>SendGrid\u3067\u306f\u3069\u3046\u3084\u3063\u3066\u8a2d\u5b9a\u3059\u308b\u306e\uff1f<\/h3>\n<p>SendGrid\u3067\u306f\u3001Domain Authentication\u3068\u3044\u3046\u6a5f\u80fd\u3067SPF\u3068DKIM\u306e\u8a2d\u5b9a\u304c\u3067\u304d\u307e\u3059\u3002\u300cautomated security\u300d\u3068\u3044\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6709\u52b9\u306b\u3059\u308b\u3068\u3001SPF\u3068DKIM\u8a8d\u8a3c\u306e\u305f\u3081\u306b\u8a2d\u5b9a\u3059\u3079\u304dDNS\u30ec\u30b3\u30fc\u30c9\u3092SendGrid\u304c\u81ea\u52d5\u3067\u751f\u6210\u3057\u307e\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u306e\u8ffd\u52a0\u306a\u3069\u3001\u8a8d\u8a3c\u8a2d\u5b9a\u306e\u66f4\u65b0\u304c\u5fc5\u8981\u306a\u5834\u9762\u3067\u3082\u3001SendGrid\u304c\u7686\u3055\u3093\u306e\u4ee3\u308f\u308a\u306b\u66f4\u65b0\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<h3>\u8a2d\u5b9a\u306e\u30c6\u30b9\u30c8\u306f\u3067\u304d\u308b\uff1f<\/h3>\n<p>DKIM\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\u30aa\u30f3\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u306f\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u3002SPF\u3084DKIM\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3057\u305f\u969b\u306f\u3001\u30e1\u30fc\u30eb\u3092\u5b9f\u969b\u306b\u9001\u308b\u524d\u306b\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u5f37\u304f\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>Tip: SendGrid\u3067\u306f\u3001DKIM\u306f<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10987\" rel=\"noopener\" target=\"_blank\">\u56fa\u5b9a\/\u5171\u6709IP\u30a2\u30c9\u30ec\u30b9<\/a>\u306e\u3044\u305a\u308c\u3067\u3082\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002\u5951\u7d04\u30d7\u30e9\u30f3\u306b\u95a2\u308f\u3089\u305a\u3001\u30e1\u30fc\u30eb\u5230\u9054\u7387\u5411\u4e0a\u306e\u624b\u52a9\u3051\u306b\u306a\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<h3>DKIM\u304c\u884c\u308f\u306a\u3044\u3053\u3068\u306f\uff1f<\/h3>\n<p>DKIM\u306e\u8a8d\u8a3c\u306f\u5f37\u529b\u3067\u3059\u304c\u3001DKIM\u304c\u884c\u308f\u306a\u3044\u3053\u3068\u3082\u77e5\u3063\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li>DKIM\u306f\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u5bfe\u3057\u3001\u53d7\u3051\u53d6\u3063\u305f\u30e1\u30fc\u30eb\u306e\u51e6\u7406\u65b9\u6cd5\u3092\u6307\u793a\u3057\u307e\u305b\u3093\u3002DMARC\u3068\u7570\u306a\u308a\u3001DKIM\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u305d\u306e\u30e1\u30fc\u30eb\u3092\u3069\u3046\u3059\u308b\u304b\u306f\u53d7\u4fe1\u30b5\u30fc\u30d0\u5074\u306e\u5224\u65ad\u306b\u59d4\u306d\u3089\u308c\u307e\u3059\u3002<\/li>\n<li>DKIM\u306f\u3001\u9001\u4fe1\u8005\u306e\u6b63\u5f53\u6027\u3092\u4fdd\u8a3c\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4f8b\u3048DKIM\u304c\u901a\u3063\u3066\u3044\u305f\u3068\u3057\u3066\u3082\u3001\u60aa\u5fb3\u306a\u696d\u8005\u304c\u305d\u306e\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u306f\u6368\u3066\u304d\u308c\u307e\u305b\u3093\u3002<\/li>\n<li>DKIM\u306f\u30e1\u30fc\u30eb\u306e\u518d\u9001\u3092\u6291\u6b62\u3057\u307e\u305b\u3093\u3002\u60aa\u8cea\u306a\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u8005\u306b\u3088\u3063\u3066\u8ee2\u9001\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u8ee2\u9001\u3055\u308c\u305f\u5148\u3067\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>SPF\u3068\u306e\u9055\u3044\u306f\uff1f\u4e21\u65b9\u8a2d\u5b9a\u304c\u5fc5\u8981\uff1f<\/h3>\n<p>SPF\u306f\u3001\u9001\u4fe1\u8005\u304c\u3069\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u7528\u3044\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u304bISP\u306b\u4f1d\u3048\u308b\u6a5f\u80fd\u3067\u3059\u3002\u4e00\u65b9DKIM\u306f\u3001\u9001\u4fe1\u8005\u304c\u9001\u3063\u305f\u5143\u3005\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u9001\u3089\u308c\u3066\u304d\u305f\u5185\u5bb9\u3092ISP\u304c\u7167\u5408\u3059\u308b\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n<p>SPF\u3068DKIM\u306b\u306f\u305d\u308c\u305e\u308c\u8db3\u308a\u306a\u3044\u90e8\u5206\u304c\u3042\u308a\u3001\u305d\u308c\u5358\u4f53\u3067\u306f\u5b8c\u5168\u306a\u8a8d\u8a3c\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002SPF\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5185\u5bb9\u3092\u8a8d\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u306a\u3044\u3067\u3059\u3057\u3001DKIM\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u4fe1\u5143\u3092\u8a8d\u8a3c\u3059\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e1\u30fc\u30eb\u3092\u3088\u308a\u30bb\u30ad\u30e5\u30a2\u306b\u3059\u308b\u306b\u306f\u3001\u3069\u3061\u3089\u306e\u8a2d\u5b9a\u3082\u884c\u3046\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002SPF\/DKIM\u3092\u8a2d\u5b9a\u3057\u3066\u30e1\u30fc\u30eb\u3092\u6b63\u3057\u304f\u914d\u4fe1\u3059\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/sendgrid.com\/marketing\/2020-deliverability-guide\/\" rel=\"noopener\" target=\"_blank\">2020 Email Deliverability Guide<\/a>\u3082\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3>\u305d\u306e\u307b\u304b\u306b\u6c17\u3092\u3064\u3051\u308b\u3053\u3068\u306f\uff1f<\/h3>\n<ul>\n<li>DKIM\u306f\u30e1\u30fc\u30eb\u306e\u4e2d\u8eab\u3092\u8a8d\u8a3c\u3059\u308b\u3082\u306e\u306a\u306e\u3067\u3001\u96fb\u5b50\u7f72\u540d\u306f\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u69cb\u7bc9\u3057\u305f\u5f8c\u306b\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u7f72\u540d\u3092\u4f5c\u6210\u3057\u305f\u5f8c\u306b\u7d50\u3073\u306e\u8a00\u8449\u3084\u7a7a\u767d\u3092\u8db3\u3057\u305f\u308a\u3001\u30d8\u30c3\u30c0\u3092\u4ed8\u3051\u52a0\u3048\u305f\u308a\u3059\u308b\u3068\u3001\u8a8d\u8a3c\u304c\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u5358\u72ec\u304b\u3001\u30d8\u30c3\u30c0\u3068\u672c\u6587\u306e\u4e21\u65b9\u3092\u7528\u3044\u3066\u96fb\u5b50\u7f72\u540d\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002Gmail\u306f\u4e21\u65b9\u3092\u7f72\u540d\u306b\u7528\u3044\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u7c73\u56fdYahoo.com\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30eb\u30fc\u30d7\u306fDKIM\u7f72\u540d\u306b\u7528\u3044\u305f\u30c9\u30e1\u30a4\u30f3\u306b\u57fa\u3065\u304d\u307e\u3059\u3002\u3059\u306a\u308f\u3061\u3001Yahoo.com\u306f\u5bc4\u305b\u3089\u308c\u305f\u82e6\u60c5\u304b\u3089\u9001\u4fe1\u8005\u3092\u7279\u5b9a\u3059\u308b\u306e\u306bDKIM\u7f72\u540d\u306e\u60c5\u5831\u3092\u7528\u3044\u3066\u3044\u307e\u3059\u3002DKIM\uff08\u3082\u3057\u304f\u306fDomain Keys\uff09\u304c\u306a\u3044\u5834\u5408\u3001Yahoo\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30eb\u30fc\u30d7\u306f\u5229\u7528\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<li>SendGrid\u3067\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3068\u3001SendGrid\u304c\u7528\u610f\u3057\u305fDKIM\u30d8\u30c3\u30c0\u304c\u81ea\u52d5\u3067\u633f\u5165\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>DKIM\u306b\u3064\u3044\u3066\u4ed6\u306b\u53c2\u8003\u306b\u306a\u308b\u8cc7\u6599\u306f\u3042\u308b\uff1f<\/h3>\n<p>\u3082\u3061\u308d\u3093\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30da\u30fc\u30b8\u306a\u3069\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li><a href=\"http:\/\/dkimcore.org\/tools\/keycheck.html\" rel=\"noopener\" target=\"_blank\">http:\/\/dkimcore.org\/tools\/keycheck.html<\/a><\/li>\n<li><a href=\"http:\/\/dkim.org\/\" rel=\"noopener\" target=\"_blank\">http:\/\/dkim.org\/<\/a><\/li>\n<\/ul>\n<p>SendGrid\u3067\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u65e5\u672c\u8a9e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3082\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\uff1a<a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/Tutorials\/D_Improve_Deliverability\/using_whitelabel.html\" rel=\"noopener\" target=\"_blank\">\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3092\u5229\u7528\u3059\u308b<\/a><\/li>\n<li>\u30d6\u30ed\u30b0\u8a18\u4e8b \u300eSendGrid\u304b\u3089\u30e1\u30fc\u30eb\u9001\u4fe1\u3059\u308b\u5834\u5408\u306eSPF\u3068DKIM\u306e\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u300f\uff1a<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10883\" rel=\"noopener\" target=\"_blank\">\u524d\u7de8<\/a>\u30fb<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10894\" rel=\"noopener\" target=\"_blank\">\u5f8c\u7de8<\/a><\/li>\n<\/ul>\n<h3>\u3055\u3044\u3054\u306b<\/h3>\n<p>\u30e6\u30fc\u30b6\u3068\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u7d9a\u3051\u3066\u3044\u304f\u305f\u3081\u306b\u3001ISP\u304c\u4e0d\u6b63\u306a\u30e1\u30fc\u30eb\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3084\u3059\u304f\u306a\u308b\u3088\u3046\u306a\u65bd\u7b56\u306f\u7a4d\u6975\u7684\u306b\u53d6\u308a\u5165\u308c\u307e\u3057\u3087\u3046\u3002DKIM\u7f72\u540d\u3092\u3064\u3051\u308c\u3070\u3001ISP\u306f\u30d6\u30e9\u30f3\u30c9\u3092\u9a19\u308b\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3068\u3044\u3063\u305f\u30e1\u30fc\u30eb\u306e\u7a2e\u985e\u3084\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u6709\u7121\u306b\u95a2\u308f\u3089\u305a\u3001\u5168\u3066\u306e\u30e1\u30fc\u30eb\u306b\u7f72\u540d\u3092\u3064\u3051\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306e\u6b63\u5f53\u6027\u3092\u793a\u3059\u300c\u9375\u300d\u3068\u3057\u3066\u3001DKIM\u306f2\u3064\u306e\u554f\u3044\u306b\u7b54\u3048\u307e\u3059\u3002\u30e1\u30fc\u30eb\u306b\u6b63\u5f53\u306a\u7f72\u540d\u304c\u3042\u308b\u304b\u3069\u3046\u304b\u3068\u3001\u3069\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u7f72\u540d\u3092\u4f5c\u6210\u3057\u305f\u304b\u3067\u3059\u3002DKIM\u306f\u30e1\u30fc\u30eb\u306e\u5230\u9054\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u5230\u9054\u7387\u306e\u6539\u5584\u306b\u5f79\u7acb\u3064\u3053\u3068\u306f\u78ba\u304b\u3067\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u304c\u4e0d\u6b63\u5229\u7528\u3055\u308c\u308b\u3053\u3068\u306b\u3088\u308b\u4e8c\u6b21\u7684\u306a\u88ab\u5bb3\u3082\u6291\u6b62\u3067\u304d\u307e\u3059\u3002\u3061\u3087\u3063\u3068\u306e\u624b\u9593\u3067\u3001\u9001\u4fe1\u8005\u3068\u3057\u3066\u306e\u4fe1\u983c\u6027\u3068\u30d6\u30e9\u30f3\u30c9\u3092\u5b88\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u6280\u8853\u3068\u5230\u9054\u6027\u5411\u4e0a\u306e\u305f\u3081\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u77e5\u308a\u305f\u3044\u65b9\u306f\u3001<a href=\"https:\/\/sendgrid.com\/resource\/the-email-infrastructure-guide-build-it-or-buy-it\/\" rel=\"noopener\" target=\"_blank\">SendGrid Email Infrastructure Guide<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u306f How to Use DKIM to Prevent Domain Spoofing \u306e\u6284\u8a33\u3067\u3059\u3002 1980\u5e74\u4ee3\u306b\u96fb\u5b50\u30e1\u30fc\u30eb\u3068SMTP\uff08Simpe Mail Transfer Protocol\uff09\u306e\u67a0\u7d44\u307f\u304c\u78ba\u7acb <a class=\"read-more\" href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=2044\">&#8230;\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":13278,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-2044","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-best-practices"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2044","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2044"}],"version-history":[{"count":10,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2044\/revisions"}],"predecessor-version":[{"id":20790,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/2044\/revisions\/20790"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/13278"}],"wp:attachment":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2044"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2044"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2044"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}