{"id":879,"date":"2026-02-13T11:30:21","date_gmt":"2026-02-13T02:30:21","guid":{"rendered":"https:\/\/ec2-54-238-200-5.ap-northeast-1.compute.amazonaws.com\/blog\/?p=879"},"modified":"2026-04-22T17:10:15","modified_gmt":"2026-04-22T08:10:15","slug":"%e9%80%81%e4%bf%a1%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e8%aa%8d%e8%a8%bc%e3%81%ae%e3%81%9f%e3%82%81%e3%81%ae5%e3%82%b9%e3%83%86%e3%83%83%e3%83%97","status":"publish","type":"post","link":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=879","title":{"rendered":"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u305f\u3081\u306e5\u30b9\u30c6\u30c3\u30d7"},"content":{"rendered":"

\"\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u305f\u3081\u306e5\u30b9\u30c6\u30c3\u30d7\"<\/p>\n

\n

\u3053\u306e\u8a18\u4e8b\u306f How to Authenticate Your Email in 5 Steps<\/a> \u306e\u6284\u8a33\u3067\u3059\u3002<\/p>\n<\/blockquote>\n

\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\uff08Gmail\u3084Outlook\u306a\u3069\uff09\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u7d50\u679c\u304b\u3089\u3001\u30e1\u30fc\u30eb\u304c\u306a\u308a\u3059\u307e\u3057\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u305d\u306e\u30e1\u30fc\u30eb\u304c\u6b63\u5f53\u306a\u3082\u306e\u3067\u3042\u308b\u3068\u78ba\u4fe1\u3067\u304d\u308b\u307b\u3069\u3001\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304f\u78ba\u7387\u304c\u4e0a\u304c\u308a\u307e\u3059\u3002\u8ff7\u60d1\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306f\u3001\u4fe1\u983c\u3055\u308c\u305f\u9001\u4fe1\u5143\u3092\u5de7\u5999\u306b\u88c5\u3044\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u304f\u308b\u306e\u3067\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u3057\u3063\u304b\u308a\u884c\u3046\u3053\u3068\u306f\u4eca\u3084\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306b\u3068\u3063\u3066\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002<\/p>\n

\u8ff7\u60d1\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306f\u3001\u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u88c5\u3063\u305f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3053\u3068\u3067\u53d7\u4fe1\u8005\u3092\u6b3a\u304d\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u3084\u30a2\u30ab\u30a6\u30f3\u30c8\u60c5\u5831\u3001\u305d\u306e\u4ed6\u500b\u4eba\u60c5\u5831\u3092\u8a50\u53d6\u3057\u3066\u5229\u76ca\u3092\u5f97\u307e\u3059\u3002\u3053\u308c\u306f\u53d7\u4fe1\u8005\u306b\u3068\u3063\u3066\u30de\u30a4\u30ca\u30b9\u3068\u306a\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u60aa\u7528\u3055\u308c\u305f\u3042\u306a\u305f\u306e\u30d6\u30e9\u30f3\u30c9\u3084\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u5bfe\u3059\u308b\u4fe1\u983c\u4f4e\u4e0b\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n

\u9867\u5ba2\u60c5\u5831\u3092\u5b88\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u9001\u4fe1\u8005\u3068\u3057\u3066\u306e\u8a55\u5224\uff08\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3<\/a>\uff09\u3092\u5b88\u308b\u305f\u3081\u306b\u3082\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306f\u975e\u5e38\u306b\u6709\u52b9\u306a\u624b\u6bb5\u3067\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u305d\u306e\u8a2d\u5b9a\u306f\u82e5\u5e72\u30c8\u30ea\u30c3\u30ad\u30fc\u3067\u3059\u3002\u4ee5\u4e0b\u306e5\u30b9\u30c6\u30c3\u30d7\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

1) \u4e00\u8cab\u3057\u305f\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046<\/h3>\n

\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3068\u9001\u4fe1\u8005\u540d\u306b\u306f\u4e00\u8cab\u6027\u3092\u6301\u305f\u305b\u307e\u3057\u3087\u3046\u3002\u53d7\u4fe1\u8005\u306b\u597d\u5947\u5fc3\u3067\u30e1\u30fc\u30eb\u3092\u958b\u5c01\u3055\u305b\u308b\u3053\u3068\u3082\u9b45\u529b\u7684\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u4fe1\u983c\u6027\u306f\u3001\u53d7\u4fe1\u8005\u304c\u300c\u4fe1\u983c\u3067\u304d\u308b\u9001\u4fe1\u8005\u3067\u3042\u308b\u300d\u3068\u5bb9\u6613\u306b\u8a8d\u8b58\u3067\u304d\u308b\u3053\u3068\u304c\u57fa\u672c\u3067\u3059\u3002\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3084\u9001\u4fe1\u8005\u540d\u3092\u983b\u7e41\u306b\u5909\u66f4\u3059\u308b\u3068\u3001\u53d7\u4fe1\u8005\u306f\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306e\u88ab\u5bb3\u3092\u53d7\u3051\u3084\u3059\u304f\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n

\u540c\u69d8\u306b\u3001Cousin Domain\uff08\u3044\u3068\u3053\u30c9\u30e1\u30a4\u30f3\uff09\u3084\u3001\u666e\u6bb5\u4f7f\u7528\u3057\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u3068\u3088\u304f\u4f3c\u305f\u30c9\u30e1\u30a4\u30f3\u3082\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u4fe1\u983c\u6027\u3092\u640d\u306a\u3046\u305f\u3081\u4f7f\u7528\u306f\u907f\u3051\u307e\u3057\u3087\u3046\u3002\u4f8b\u3048\u3070\u3001\u666e\u6bb5\u4f7f\u3063\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u304cexample.com\u3067\u3042\u308c\u3070\u3001examplemail.com\u306e\u3088\u3046\u306b\u985e\u4f3c\u3057\u305f\u30c9\u30e1\u30a4\u30f3\u306f\u4f7f\u308f\u306a\u3044\u65b9\u304c\u3088\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n

2) SPF\u3067IP\u30a2\u30c9\u30ec\u30b9\u8a8d\u8a3c\u3092\u3057\u307e\u3057\u3087\u3046<\/h3>\n

SPF\uff08Sender Policy Framework\uff09\u306f\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u306b\u4f7f\u308f\u308c\u305fIP\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u5f53\u306a\u9001\u4fe1\u5143\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u306f\u3001\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u306e\u4e00\u89a7\u3092\u300cSPF\u30ec\u30b3\u30fc\u30c9\u300d\u3068\u3057\u3066\u3042\u3089\u304b\u3058\u3081\u8a2d\u5b9a\u3057\u3066\u304a\u304d\u307e\u3059\uff08\u8a73\u7d30\u306f\u3053\u3061\u3089<\/a>\uff09\u3002
\nTwilio SendGrid\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306fDomain Autentication<\/a>\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002SPF\u30ec\u30b3\u30fc\u30c9\u306e\u7ba1\u7406\u3092SendGrid\u306b\u4efb\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

3) \u9001\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u306bDKIM\u7f72\u540d\u3092\u3064\u3051\u307e\u3057\u3087\u3046<\/h3>\n

DKIM\uff08DomainKeys Identified Mail\uff09\u3068\u306f\u3001\u96fb\u5b50\u7f72\u540d\u3092\u4f7f\u7528\u3057\u3066\u3001\u8ee2\u9001\u4e2d\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\uff08\u8a73\u7d30\u306f\u3053\u3061\u3089<\/a>\uff09\u3002
\nSendGrid\u3067\u30e1\u30fc\u30eb\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001Domain Authentication\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306eDKIM\u7f72\u540d\u3092\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

4) DMARC\u8a8d\u8a3c\u3067\u30c9\u30e1\u30a4\u30f3\u3092\u4fdd\u8b77\u3057\u307e\u3057\u3087\u3046<\/h3>\n

DMARC\uff08Domain-based Message Authentication, Reporting & Conformance\uff09\u306f\u3001SPF\u3068DKIM\u3092\u5229\u7528\u3057\u305f\u306a\u308a\u3059\u307e\u3057\u9632\u6b62\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n

DMARC\u8a8d\u8a3c\u3067\u306f\u3001SPF\u3068DKIM\u306e\u4e21\u65b9\u304c\u8a8d\u8a3c\u306b\u6210\u529f\u3059\u308b\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002 \u307e\u305f\u3001\u9001\u4fe1\u5143\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u3068\u8a8d\u8a3c\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c9\u30e1\u30a4\u30f3\u306f\u4e00\u81f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 DMARC\u3092\u4f7f\u7528\u3059\u308c\u3070\u3001\u30c9\u30e1\u30a4\u30f3\u306e\u6240\u6709\u8005\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u304c\u7591\u308f\u308c\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u51e6\u7406\u65b9\u6cd5\uff08\u5b8c\u5168\u306b\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3001\u30b9\u30d1\u30e0\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u308c\u308b\u7b49\uff09\u3092\u53d7\u4fe1\u30b5\u30fc\u30d0\u306b\u6307\u793a\u3057\u305f\u308a\u3001\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u3084\u306a\u308a\u3059\u307e\u3057\u306e\u53ef\u80fd\u6027\u306b\u95a2\u3059\u308b\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u4fe1\u3057\u305f\u308a\u3067\u304d\u307e\u3059\u3002 DMARC\u306e\u5b9f\u88c5\u65b9\u6cd5\u306b\u95a2\u3057\u3066\u306f\u3053\u3061\u3089<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n

DMARC\u306b\u304a\u3044\u3066\u3082\u3046\u4e00\u3064\u91cd\u8981\u306a\u306e\u306f\u3001\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u304c\u3067\u304d\u308b\u70b9\u3067\u3059\u3002SendGrid\u306fValimail\u3068\u63d0\u643a<\/a>\u3057\u3001\u5229\u7528\u8005\u306bDMARC\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3092\u7121\u6599\u3067\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3092\u6e1b\u5c11\u3055\u305b\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306e\u5171\u540c\u30ac\u30a4\u30c9\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u30ac\u30a4\u30c9\u306f\u3053\u3061\u3089<\/a>\u304b\u3089\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u307e\u3059\u3002<\/p>\n

5\uff09BIMI\u3092\u4f7f\u3046\u6e96\u5099\u3092\u3057\u307e\u3057\u3087\u3046<\/h3>\n

BIMI\uff08Brand Indicators for Message Identification\uff09\u306f\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u4e0a\u306e\u4fe1\u983c\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u6280\u8853\u3067\u3059\u3002\u9001\u4fe1\u8005\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u9ad8\u304f\u3001DMARC\u304c\u6709\u52b9\u5316\u3055\u308c\u3066\u3044\u3066BIMI\u30ec\u30b3\u30fc\u30c9\u304c\u516c\u958b\u3055\u308c\u3066\u3044\u308c\u3070\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u30d6\u30e9\u30f3\u30c9\u306e\u30ed\u30b4\u3092\u8868\u793a\u3067\u304d\u308b\u305f\u3081\u3001\u53d7\u4fe1\u8005\u304c\u4e00\u76ee\u3067\u7c21\u5358\u306b\u300c\u3053\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u4fe1\u983c\u3067\u304d\u308b\u300d\u3068\u8a8d\u8b58\u3067\u304d\u308b\u306e\u3067\u3059\u3002<\/p>\n

BIMI\u306f\u3001\u53d7\u4fe1\u8005\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u4fe1\u5143\u3084\u305d\u306e\u4fe1\u983c\u6027\u3092\u8996\u899a\u7684\u306b\u5224\u65ad\u3067\u304d\u308b\u552f\u4e00\u306e\u65b9\u6cd5\u3067\u3059\u3002 \u8a73\u7d30\u306f\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n

\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3092\u8a2d\u5b9a\u3057\u3088\u3046<\/h3>\n

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\u3053\u306e\u8a18\u4e8b\u306f How to Authenticate Your Email in 5 Steps \u306e\u6284\u8a33\u3067\u3059\u3002 \u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\uff08Gmail\u3084Outlook\u306a\u3069\uff09\u306f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u7d50\u679c\u304b\u3089\u3001\u30e1\u30fc\u30eb\u304c\u306a\u308a\u3059\u307e\u3057\u304b …\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":16460,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9],"tags":[],"class_list":["post-879","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\/879","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=879"}],"version-history":[{"count":9,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/879\/revisions"}],"predecessor-version":[{"id":19998,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/879\/revisions\/19998"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/16460"}],"wp:attachment":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=879"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=879"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}