{"id":17213,"date":"2024-02-14T11:30:25","date_gmt":"2024-02-14T02:30:25","guid":{"rendered":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17213"},"modified":"2026-04-02T10:47:57","modified_gmt":"2026-04-02T01:47:57","slug":"%e3%82%bb%e3%83%9f%e3%83%8a%e3%83%bc%e3%80%8cgmail%e6%96%b0%e3%82%ac%e3%82%a4%e3%83%89%e3%83%a9%e3%82%a4%e3%83%b3%e3%81%ae%e3%83%9d%e3%82%a4%e3%83%b3%e3%83%88%e3%82%92%e8%a7%a3%e8%aa%ac%ef%bc%81","status":"publish","type":"post","link":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17213","title":{"rendered":"\u30bb\u30df\u30ca\u30fc\u300cGmail\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\uff01\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304c\u4eca\u3084\u308b\u3079\u304d\u3053\u3068\u300d\u3092\u958b\u50ac\u3057\u307e\u3057\u305f\uff01\uff08\u672c\u7de8\uff09"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/20231226_blogver2.png\" alt=\"\u30bb\u30df\u30ca\u30fc\u300cGmail\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\uff01\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304c\u4eca\u3084\u308b\u3079\u304d\u3053\u3068\u300d\u3092\u958b\u50ac\u3057\u307e\u3057\u305f\uff01\uff08\u672c\u7de8\uff09\" width=\"100%\" class=\"aligncenter size-full wp-image-17322\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/20231226_blogver2.png 650w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/20231226_blogver2-300x185.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/20231226_blogver2-225x139.png 225w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/p>\n<aside class=\"status\">\u3053\u306e\u8a18\u4e8b\u306f\u3001Google\u3084Yahoo!\u3001\u305d\u306e\u4ed6\u95a2\u9023\u56e3\u4f53\u306e\u30bb\u30df\u30ca\u30fc\u958b\u50ac\u6642\u70b9\u3067\u306e\u516c\u958b\u60c5\u5831\u306b\u57fa\u3065\u3044\u3066\u57f7\u7b46\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u60c5\u5831\u306e\u6b63\u78ba\u6027\u306b\u95a2\u3057\u3066\u5f53\u793e\u306f\u8cac\u4efb\u3092\u8ca0\u3044\u304b\u306d\u307e\u3059\u3002\u5185\u5bb9\u306e\u5909\u66f4\u3084\u66f4\u65b0\u306b\u3064\u3044\u3066\u306f\u516c\u5f0f\u60c5\u5831\u3092\u968f\u6642\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/aside>\n<p>12\u67087\u65e5\u306b\u7d9a\u304d\u30011\u670822\u65e5\u306b\u958b\u50ac\u3057\u305f\u30aa\u30f3\u30e9\u30a4\u30f3\u30bb\u30df\u30ca\u30fc\u300cGmail\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\uff01\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304c\u4eca\u3084\u308b\u3079\u304d\u3053\u3068\u300d\u3002\u3042\u308a\u304c\u305f\u3044\u3053\u3068\u306b\u3001\u3069\u3061\u3089\u306e\u56de\u3082\u5927\u5909\u591a\u304f\u306e\u65b9\u306b\u3054\u8996\u8074\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002<br \/>\n\u672c\u8a18\u4e8b\u3067\u306f\u30011\u670822\u65e5\u306e\u30bb\u30df\u30ca\u30fc\u3067\u8a9e\u3089\u308c\u305f\u5185\u5bb9\u306b\u6cbf\u3063\u3066\u3001\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u7d30\u304b\u304f\u7d39\u4ecb\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n<h3>Gmail\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3068\u306f\uff1f<\/h3>\n<p>2023\u5e7410\u6708\u3001<a href=\"https:\/\/blog.google\/products\/gmail\/gmail-security-authentication-spam-protection\/\" rel=\"noopener\" target=\"_blank\">Google<\/a>\u3068<a href=\"https:\/\/blog.postmaster.yahooinc.com\/post\/730172167494483968\/more-secure-less-spam\" rel=\"noopener\" target=\"_blank\">Yahoo!<\/a>\uff08Yahoo! JAPAN\u3067\u306f\u3042\u308a\u307e\u305b\u3093\uff09\u304b\u3089\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u5411\u3051\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u66f4\u65b0\u3057\u305f\u65e8\u306e\u30a2\u30ca\u30a6\u30f3\u30b9\u304c\u3042\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306f2024\u5e742\u6708\u304b\u3089\u6bb5\u968e\u7684\u306b\u9069\u7528\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u305d\u308c\u307e\u3067\u306b\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u66f4\u65b0\u306b\u5bfe\u5fdc\u3067\u304d\u306a\u3051\u308c\u3070\u30e1\u30fc\u30eb\u304c\u5b9b\u5148\u306b\u5c4a\u304b\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>2\u793e\u304c\u6c42\u3081\u308b\u8981\u4ef6\u306f\u5171\u901a\u3057\u3066\u3044\u307e\u3059\u3002\u5185\u5bb9\u3092\u3056\u3063\u304f\u308a\u307e\u3068\u3081\u308b\u3068\u3001\u305d\u306e\u4e3b\u65e8\u306f\u5b9f\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002<\/p>\n<ul>\n<li>Authentication &#038; Trust\uff08\u8a8d\u8a3c\u3068\u4fe1\u983c\uff09\n<ul>\n<li>\u8ab0\u304c\u9001\u3063\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u306a\u306e\u304b\u3092\u660e\u78ba\u306b\u3059\u308b\u3053\u3068<\/li>\n<li>\u5b89\u5168\u3067\u4fe1\u983c\u3067\u304d\u308b\u65b9\u6cd5\u3067\u9001\u4fe1\u3059\u308b\u3053\u3068<\/li>\n<\/ul>\n<\/li>\n<li>Easy Unsubscribe\uff08\u7c21\u5358\u306a\u914d\u4fe1\u505c\u6b62\uff09\n<ul>\n<li>\u53d7\u4fe1\u8005\u304c\u5fc5\u8981\u3068\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\uff08\uff1d\u8aad\u307e\u308c\u308b\u30e1\u30fc\u30eb\uff09\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068<\/li>\n<li>\u53d7\u4fe1\u8005\u81ea\u8eab\u304c\u9001\u4fe1\u8005\u3068\u306e\u95a2\u4fc2\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u53d7\u4fe1\u8005\u306e\u6c17\u6301\u3061\u306b\u306a\u3063\u3066\u307f\u308c\u3070\u7d0d\u5f97\u306e\u5185\u5bb9\u3067\u3059\u306d\u3002\u672c\u8a18\u4e8b\u306fGoogle\u306e\u767a\u8868\u5185\u5bb9\uff08<a href=\"https:\/\/support.google.com\/a\/answer\/81126\" rel=\"noopener\" target=\"_blank\">\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a>\u3001<a href=\"https:\/\/support.google.com\/a\/answer\/14229414\" rel=\"noopener\" target=\"_blank\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/a>\uff09\u306b\u6cbf\u3063\u3066\u8a73\u3057\u304f\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u304c\u5909\u66f4\u3055\u308c\u308b\u80cc\u666f<\/h3>\n<p>\u60aa\u610f\u306e\u3042\u308b\u9001\u4fe1\u8005\u304b\u3089\u53d7\u4fe1\u8005\u3092\u5b88\u308b\u305f\u3081\u3001\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u81ea\u4f53\u306f\u4ee5\u524d\u304b\u3089\u5b58\u5728\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u4f4d\u7f6e\u3065\u3051\u306f\u300c\u63a8\u5968\u300d\u3067\u3042\u308a\u300c\u5f37\u5236\u300d\u3067\u306f\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u5b9f\u969b\u306b\u306f\u306a\u304b\u306a\u304b\u666e\u53ca\u304c\u9032\u307f\u307e\u305b\u3093\u3067\u3057\u305f\u3002<br \/>\n\u305d\u306e\u9593\u3082\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u30e1\u30fc\u30eb\u306f\u5897\u52a0\u306e\u4e00\u9014\u3092\u305f\u3069\u308a\u3001\u88ab\u5bb3\u3082\u5897\u3048\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u4e8b\u614b\u3092\u91cd\u304f\u898b\u3066\u3001\u3068\u3046\u3068\u3046\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u5185\u5bb9\u304c\u5f37\u5236\u5316\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u304c\u4eca\u56de\u306e\u5909\u66f4\u306e\u80cc\u666f\u3067\u3059\u3002<\/p>\n<p>Google\u3082Yahoo!\u3082\u3001\u7279\u5225\u306a\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u3068\u306a\u308b\u3088\u3046\u306a\u5bfe\u5fdc\u3092\u6c42\u3081\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u6a19\u6e96\u7684\u306a\u65b9\u6cd5\u3067\u3001\u60aa\u610f\u306e\u3042\u308b\u30e1\u30fc\u30eb\u3092\u6e1b\u3089\u3057\u30e1\u30fc\u30eb\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u3092\u5065\u5168\u5316\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u3002<br \/>\n\u3082\u3061\u308d\u3093\u3001\u7686\u3055\u3093\u6b63\u5f53\u306a\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3068\u306f\u601d\u3044\u307e\u3059\u304c\u3001\u305d\u308c\u3092&#8221;\u5ba2\u89b3\u7684\u306b\u5224\u65ad\u3067\u304d\u308b&#8221;\u3088\u3046\u306b\u3059\u308b\u3068\u3044\u3046\u306e\u304c\u3053\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u8981\u4ef6\u3067\u3059\u3002<\/p>\n<h3>\u9069\u7528\u306e\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3<\/h3>\n<p>\u30a2\u30ca\u30a6\u30f3\u30b9\u5f53\u521d\u306f\u30012024\u5e742\u6708\u306e\u6642\u70b9\u3067\u5168\u3066\u306e\u8981\u4ef6\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308b\u3082\u306e\u3068\u601d\u308f\u308c\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u5f8c\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3001\u8981\u4ef6\u306f\u6bb5\u968e\u7684\u306b\u9069\u7528\u3055\u308c\u5f90\u3005\u306b\u53b3\u3057\u304f\u306a\u3063\u3066\u3044\u304f\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>2024\u5e742\u6708<br \/>\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u306e\u3046\u3061\u3001<strong>\u3054\u304f\u4e00\u90e8\u306e\u30e1\u30fc\u30eb\u3067\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc<\/strong>\u304c\u8fd4\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308b\u3002<\/li>\n<li>2024\u5e744\u6708<br \/>\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u3044\u30e1\u30fc\u30eb\u306e\u3046\u3061\u3001<strong>\u4e00\u90e8\u306e\u30e1\u30fc\u30eb\u304c\u62d2\u5426<\/strong>\u3055\u308c\u59cb\u3081\u308b\u3002\u62d2\u5426\u3055\u308c\u308b\u30e1\u30fc\u30eb\u306e\u5272\u5408\u306f\u5f90\u3005\u306b\u5927\u304d\u304f\u306a\u308b\u3002<\/li>\n<li>2024\u5e746\u6708<br \/>\u5168\u3066\u306e\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u3067<strong>\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u914d\u4fe1\u505c\u6b62<\/strong>\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002<\/li>\n<\/ul>\n<h3>\u4e00\u62ec\u9001\u4fe1\u8005\uff08bulk senders\uff09\u306e\u5b9a\u7fa9<\/h3>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u9069\u7528\u5bfe\u8c61\u3068\u306a\u308b\u300c\u4e00\u62ec\u9001\u4fe1\u8005\u300d\u306e\u5b9a\u7fa9\u3082\u660e\u3089\u304b\u306b\u306a\u3063\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>\u4e00\u62ec\u9001\u4fe1\u8005\u3068\u306f\u3001Google Workspace\u3092\u9664\u3044\u305fGmail\u30a2\u30ab\u30a6\u30f3\u30c8\uff08gmail.com\u304a\u3088\u3073googlemail.com\uff09\u306b\u5bfe\u3057\u300124\u6642\u9593\u3042\u305f\u308a5,000\u901a\u7a0b\u5ea6\u4ee5\u4e0a\u3092\u9001\u4fe1\u3059\u308b\u9001\u4fe1\u8005\u3092\u6307\u3059<\/li>\n<li>\u540c\u3058\u30d7\u30e9\u30a4\u30de\u30ea\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30e1\u30fc\u30eb\u5168\u3066\u304c\u540c\u3058\u9001\u4fe1\u8005\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3068\u3057\u3066\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u308b\n<ul style=\"margin-bottom:0.5em;\">\n<li>\u4f8b\u3048\u3070\u3001@example.com\u304b\u30893,000\u901a\u3001@sub.example.com\u304b\u30892,500\u901a\u9001\u3063\u305f\u5834\u5408\u30015,500\u901a\u3068\u30ab\u30a6\u30f3\u30c8\u3055\u308c\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u306e\u7a2e\u985e\uff08\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\uff09\u3084\u9001\u4fe1\u7d4c\u8def\uff08Twilio SendGrid\u3001CRM\u30c4\u30fc\u30eb\u306a\u3069\uff09\u306b\u304b\u304b\u308f\u3089\u305a\u3001\u5168\u3066\u306e\u30e1\u30fc\u30eb\u304c\u30ab\u30a6\u30f3\u30c8\u5bfe\u8c61<\/li>\n<\/ul>\n<\/li>\n<li>\u2f00\u5ea6\u3067\u3082\u2f00\u62ec\u9001\u4fe1\u8005\u3068\u307f\u306a\u3055\u308c\u308c\u3070\u305d\u306e\u5f8c\u3082\u2f00\u62ec\u9001\u4fe1\u8005\u3068\u307f\u306a\u3055\u308c\u7d9a\u3051\u308b\n<ul>\n<li>\u300c\u4e00\u62ec\u9001\u4fe1\u8005\u300d\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u306b\u6709\u52b9\u671f\u9650\u306f\u306a\u3044<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4ee5\u524d\u306f\u30e1\u30fc\u30eb\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u5206\u3051\u308c\u3070\u5225\u30ab\u30a6\u30f3\u30c8\u306b\u306a\u308b\u306e\u3067\u306f\uff1f\u3068\u63a8\u6e2c\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u65b9\u6cd5\u3067\u306f\u30ab\u30a6\u30f3\u30c8\u306f\u5206\u3051\u3089\u308c\u305a\u3001\u307e\u305f\u3001\u4e00\u5ea6\u3067\u3082\u4e00\u62ec\u9001\u4fe1\u8005\u3060\u3068\u5224\u65ad\u3055\u308c\u308c\u3070\u4eca\u5f8c\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u5b9a\u7fa9\u3092\u53b3\u3057\u3044\u3068\u601d\u3046\u65b9\u3082\u3044\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u5185\u5bb9\u306f\u3044\u305a\u308c\u3082\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u304a\u3051\u308b\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3067\u3059\u3002\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u3068\u3057\u3066\u3042\u308b\u3079\u304d\u59ff\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001<strong>\u5b9b\u5148\u30c9\u30e1\u30a4\u30f3\u3084\u9001\u4fe1\u898f\u6a21\u306b\u304b\u304b\u308f\u3089\u305a\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u5f37\u304f\u63a8\u5968<\/strong>\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u5185\u5bb9<\/h3>\n<p>\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u8981\u4ef6\u3092\u6e80\u305f\u3059\u3053\u3068\u304c\u6c42\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>1\uff0e\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3067SPF\u3068DKIM\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046<\/h4>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3509\" rel=\"noopener\" target=\"_blank\">SPF<\/a>\u306f\u3001\u9001\u4fe1\u8005\u304c\u300c\u3053\u306e\u5dee\u51fa\u4eba\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3053\u306eIP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u9001\u4fe1\u3057\u307e\u3059\u300d\u3068\u3044\u3046\u60c5\u5831\u3092DNS\u30b5\u30fc\u30d0\u306b\u516c\u958b\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u5f53\u306a\u30b5\u30fc\u30d0\u304b\u3089\u9001\u4fe1\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=2044\" rel=\"noopener\" target=\"_blank\">DKIM<\/a>\u306f\u3001\u9001\u4fe1\u8005\u304c\u300c\u3053\u306e\u5dee\u51fa\u4eba\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306b\u4ed8\u3051\u3089\u308c\u305f\u96fb\u5b50\u7f72\u540d\u306f\u3001\u3053\u306e\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u691c\u8a3c\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u3044\u3046\u60c5\u5831\u3092DNS\u30b5\u30fc\u30d0\u306b\u516c\u958b\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u5f53\u306a\u30b5\u30fc\u30d0\u304b\u3089\u9001\u4fe1\u3055\u308c\u3001\u6539\u3056\u3093\u3082\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n<p>\u3044\u305a\u308c\u3082\u3001\u8a8d\u8a3c\u7d50\u679c\u306b\u57fa\u3065\u3044\u3066\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u304b\u6c7a\u3081\u308b\u306e\u306f\u53d7\u4fe1\u30b5\u30fc\u30d0\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/1_SPF_DKIM.png\" alt=\"SPF\u3068DKIM\u306e\u4ed5\u7d44\" width=\"100%\" class=\"aligncenter size-full wp-image-17400\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/1_SPF_DKIM.png 892w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/1_SPF_DKIM-300x205.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/1_SPF_DKIM-768x525.png 768w\" sizes=\"(max-width: 892px) 100vw, 892px\" \/><\/p>\n<h4>2\uff0eDMARC\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046<\/h4>\n<p>DMARC\u306f\u3001\u9001\u4fe1\u8005\u304c\u300c\u3053\u306e\u5dee\u51fa\u4eba\u304b\u3089\u9001\u3089\u308c\u305f\u30e1\u30fc\u30eb\u304cSPF\/DKIM\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u306f\u3001\u3053\u306e\u3088\u3046\u306b\u6271\u3063\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u3044\u3046\u6307\u793a\uff08\uff1d\u30dd\u30ea\u30b7\u30fc\uff09\u3092DNS\u30b5\u30fc\u30d0\u306b\u516c\u958b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002<br \/>\nSPF\/DKIM\u3068\u306f\u9055\u3044\u3001\u30e1\u30fc\u30eb\u3092\u3069\u3046\u6271\u3046\u304b\u3092\u6c7a\u3081\u308b\u306e\u306f\u9001\u4fe1\u8005\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/2_DMARC.png\" alt=\"DMARC\u306e\u4ed5\u7d44\u307f\" width=\"100%\" class=\"aligncenter size-full wp-image-17401\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/2_DMARC.png 925w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/2_DMARC-300x198.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/2_DMARC-768x508.png 768w\" sizes=\"(max-width: 925px) 100vw, 925px\" \/><\/p>\n<p>\u30dd\u30ea\u30b7\u30fc\u306b\u306f\u4ee5\u4e0b\u306e3\u7a2e\u985e\u304c\u3042\u308a\u3001\u4e0b\u306b\u884c\u304f\u306b\u3064\u308c\u3066\u3060\u3093\u3060\u3093\u53b3\u3057\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>p = none\uff1a\u4f55\u3082\u6c42\u3081\u306a\u3044\uff08\u9001\u4fe1\u8005\u5074\u3068\u3057\u3066\u306f\u7279\u306b\u6307\u793a\u305b\u305a\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u306b\u5224\u65ad\u3092\u4efb\u305b\u308b\uff09<\/li>\n<li>p = quarantine\uff1a\u9694\u96e2\uff08\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u306f\u683c\u7d0d\u305b\u305a\u3001\u30b9\u30d1\u30e0\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u308b\u3088\u3046\u6307\u793a\u3059\u308b\uff09<\/li>\n<li>p = reject\uff1a\u62d2\u5426\uff08\u7121\u6761\u4ef6\u3067\u7834\u68c4\u3059\u308b\u3088\u3046\u6307\u793a\u3059\u308b\uff09<\/li>\n<\/ul>\n<p>Gmail\u306e\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u306f\u3001<code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">p=none<\/code> \u3092\u8a2d\u5b9a\u3059\u308c\u3070\u826f\u3044\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9\u3001Yahoo!\u306f\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u306b <code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">rua<\/code> \u30bf\u30b0\u3092\u4ed8\u4e0e\u3057\u3066DMARC\u30ec\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u3092\u300c\u5f37\u304f\u63a8\u5968\u300d\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u308a\u3059\u307e\u3057\u306b\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u3082\u306e\u3092\u542b\u3081\u30c9\u30e1\u30a4\u30f3\u306e\u5229\u7528\u72b6\u6cc1\u304c\u3059\u3079\u3066\u628a\u63e1\u3067\u304d\u308b\u305f\u3081\u3001\u5fd8\u308c\u305a\u306b <code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">rua<\/code> \u30bf\u30b0\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u5404\u30bf\u30b0\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3137\" rel=\"noopener\" target=\"_blank\">\u3053\u3061\u3089<\/a>\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h5>DMARC\u5c0e\u5165\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h5>\n<p>DMARC\u3092\u5c0e\u5165\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u6d41\u308c\u3067\u5b9f\u65bd\u3059\u308b\u3068\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<ol>\n<li>SPF\u3068DKIM\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308b<\/li>\n<li><strong>p=none<\/strong>\u3067DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\uff08\u5fc5\u305aSPF\u3001DKIM\u3001DMARC\u306e\u30c9\u30e1\u30a4\u30f3\u306f\u7d71\u4e00\u3059\u308b\uff09<\/li>\n<li>\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\uff08<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=14490\" rel=\"noopener\" target=\"_blank\">DMARC\u30ec\u30dd\u30fc\u30c8<\/a>\uff09\u3092\u53d7\u3051\u53d6\u308a\u3001\u628a\u63e1\u3057\u304d\u308c\u3066\u3044\u306a\u3044\u7d4c\u8def\u306e\u30e1\u30fc\u30eb\u3084\u8a2d\u5b9a\u8aa4\u308a\u304c\u306a\u3044\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b<\/li>\n<li>SPF\u3001DKIM\u8a2d\u5b9a\u306b\u629c\u3051\u6f0f\u308c\u3084\u8aa4\u308a\u304c\u3042\u3063\u305f\u5834\u5408\u306f\u4fee\u6b63\u3059\u308b<\/li>\n<li>\u30dd\u30ea\u30b7\u30fc\u3092\u6bb5\u968e\u7684\u306b\u5f15\u304d\u4e0a\u3052\u308b\uff08<strong>p=quarantine<\/strong>\u304b\u3089<strong>reject<\/strong>\u3078\uff09<\/li>\n<\/ol>\n<p>DMARC\u306f\u540c\u3058\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u9001\u4fe1\u3059\u308b\u5168\u3066\u306e\u30e1\u30fc\u30eb\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u3044\u304d\u306a\u308a\u30dd\u30ea\u30b7\u30fc\u3092\u53b3\u3057\u304f\u8a2d\u5b9a\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u307e\u305a\u306f<strong>p=none<\/strong>\u3067\u8a2d\u5b9a\u3057\u3066DMARC\u30ec\u30dd\u30fc\u30c8\u3067\u73fe\u72b6\u3092\u628a\u63e1\u3057\u3001\u554f\u984c\u304c\u306a\u3044\u3068\u5224\u65ad\u3067\u304d\u3066\u304b\u3089\u5f90\u3005\u306b\u53b3\u3057\u304f\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u30d7\u30e9\u30a4\u30de\u30ea\u30c9\u30e1\u30a4\u30f3\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u305d\u308c\u305e\u308c\u306b\u5225\u306eDMARC\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u30dd\u30ea\u30b7\u30fc\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u30d7\u30e9\u30a4\u30de\u30ea\u30c9\u30e1\u30a4\u30f3\u306e\u8a2d\u5b9a\u304c\u7d99\u627f\u3055\u308c\u308b\u306e\u3067\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u5229\u7528\u72b6\u6cc1\u3082\u628a\u63e1\u3057\u305f\u3046\u3048\u3067\u9069\u5207\u306a\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>3\uff0e\u30d8\u30c3\u30c0From\u30c9\u30e1\u30a4\u30f3\u306fSPF\u3001DKIM\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3055\u305b\u307e\u3057\u3087\u3046<\/h4>\n<p>\u3053\u308c\u3089\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u3068DMARC\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u306bPass\u3067\u304d\u306a\u304f\u306a\u308a\u3001\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304b\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>4\uff0e\u30d8\u30c3\u30c0From\u306bGmail\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u6307\u5b9a\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093<\/h4>\n<p>\u73fe\u5728\u306eGmail\u3001Yahoo!\u3001Twilio SendGrid\u306eDMARC\u8a2d\u5b9a\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/f83f7d64b00449409ae32c45ef3e20c2.png\" alt=\"Twilio SendGrid DMARC\u306e\u8a2d\u5b9a\" width=\"100%\" class=\"aligncenter size-full wp-image-17229\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/f83f7d64b00449409ae32c45ef3e20c2.png 873w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/f83f7d64b00449409ae32c45ef3e20c2-300x124.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/f83f7d64b00449409ae32c45ef3e20c2-768x318.png 768w\" sizes=\"(max-width: 873px) 100vw, 873px\" \/><\/p>\n<p>Gmail\u3067\u306f <code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">p=none<\/code> \u306e\u30dd\u30ea\u30b7\u30fc\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u9069\u7528\u306b\u3042\u305f\u308a <code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">p=quarantine<\/code> \u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u5ba3\u8a00\u3055\u308c\u307e\u3057\u305f\u3002<br \/>\n\u3053\u308c\u306b\u3088\u308a\u3001\u4eca\u5f8c\u306f@gmail.com\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5dee\u51fa\u4eba\u306b\u3057\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304b\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h4>5\uff0e\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u3001IP\u30a2\u30c9\u30ec\u30b9\u306b\u5bfe\u3057\u3001\u6709\u52b9\u306a\u6b63\u5f15\u304d\u3001\u9006\u5f15\u304dDNS\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046<\/h4>\n<p>\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306eA\u30ec\u30b3\u30fc\u30c9\u304b\u3089\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u3092\u53c2\u7167\u3067\u304d\u308b\u3088\u3046\u306b\u3057\uff08\u6b63\u5f15\u304d\uff09\u3001\u9006\u306b\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u306ePTR\u30ec\u30b3\u30fc\u30c9\u304b\u3089\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u3092\u53c2\u7167\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\uff08\u9006\u5f15\u304d\uff09\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\nIP\u30a2\u30c9\u30ec\u30b9\u3068\u30c9\u30e1\u30a4\u30f3\u306e\u7d10\u4ed8\u304d\u304c\u53cc\u65b9\u5411\u3067\u4e00\u81f4\u3059\u308c\u3070\u3001\u6b63\u5f53\u306a\u9001\u4fe1\u8005\u3067\u3042\u308b\u8a3c\u660e\u306b\u306a\u308b\u3068\u3044\u3046\u7406\u5c48\u3067\u3059\u3002<\/p>\n<h4>6\uff0e\u30e1\u30fc\u30ea\u30f3\u30b0\u30ea\u30b9\u30c8\u7b49\u3001\u8ee2\u9001\u3059\u308b\u5834\u5408\u306fARC\u30d8\u30c3\u30c0\u3092\u8ffd\u52a0\u3057\u307e\u3057\u3087\u3046<\/h4>\n<p>SPF\u3068DKIM\u306f\u3001\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u4e0a\u3001\u30e1\u30fc\u30eb\u304c\u8ee2\u9001\u3055\u308c\u305f\u308a\u8ee2\u9001\u6642\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u66f8\u304d\u304b\u3048\u3089\u308c\u305f\u308a\u3059\u308b\u3068\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002ARC\u30d8\u30c3\u30c0\u306f\u3001\u8ee2\u9001\u524d\u306b\u884c\u308f\u308c\u305f\u8a8d\u8a3c\u306e\u7d50\u679c\u3092\u8ee2\u9001\u5f8c\u3082\u78ba\u8a8d\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3082\u306e\u3067\u3001\u3053\u308c\u306b\u3088\u308a\u3001\u8ee2\u9001\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3067\u3082SPF\u3068DKIM\u306e\u5224\u5b9a\u304c\u6b63\u3057\u304f\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u30e1\u30fc\u30ea\u30f3\u30b0\u30ea\u30b9\u30c8\u3084\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u306e\u81ea\u52d5\u8ee2\u9001\u6a5f\u80fd\u306a\u3069\u3092\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306b\u306fARC\u30d8\u30c3\u30c0\u3092\u8ffd\u52a0\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p>SendGrid\u3092\u4f7f\u3063\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3042\u308c\u3070\u5bfe\u5fdc\u306f\u4e0d\u8981\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/3_MailingList.png\" alt=\"\u30e1\u30fc\u30ea\u30f3\u30b0\u30ea\u30b9\u30c8\u5b9b\u306e\u9001\u4fe1\" width=\"100%\" class=\"aligncenter size-full wp-image-17402\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/3_MailingList.png 715w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/3_MailingList-300x160.png 300w\" sizes=\"(max-width: 715px) 100vw, 715px\" \/><\/p>\n<h4>7\uff0e\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u306e\u914d\u4fe1\u505c\u6b62\u306b\u5bfe\u5fdc\u3057\u307e\u3057\u3087\u3046<\/h4>\n<p>\u914d\u4fe1\u505c\u6b62\u306f\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u7c21\u5358\u306b\u884c\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u3001<a href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc8058\" rel=\"noopener\" target=\"_blank\">RFC 8058<\/a>\u306b\u5f93\u3044\u3001\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u306b <code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">List-Unsubscribe-Post<\/code> \u3068 <code style=\"background-color: #EEEEEE; border-radius: 5px; padding: 1px 4px; font-family: AxisStd-Light; font-weight: bold;\">List-Unsubscribe<\/code> \u3092\u542b\u3081\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/6938dcf445ffa5d609bc32fec0f0d1b5.png\" alt=\"\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\" width=\"100%\" class=\"aligncenter size-full wp-image-17230 noshadow\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/6938dcf445ffa5d609bc32fec0f0d1b5.png 837w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/6938dcf445ffa5d609bc32fec0f0d1b5-300x29.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/6938dcf445ffa5d609bc32fec0f0d1b5-768x75.png 768w\" sizes=\"(max-width: 837px) 100vw, 837px\" \/><\/p>\n<p>\u3053\u308c\u3089\u306e\u30d8\u30c3\u30c0\u3092\u633f\u5165\u3057\u3066\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3068\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u306e\u300cTo\u300d\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u96a3\u306e\u30c9\u30ed\u30c3\u30d7\u30c0\u30a6\u30f3\u30e1\u30cb\u30e5\u30fc\u306b\u30cf\u30a4\u30d1\u30fc\u30ea\u30f3\u30af\u304c\u8868\u793a\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/1_yelp_ver2.png\" alt=\"\u914d\u4fe1\u505c\u6b62\" width=\"100%\" class=\"aligncenter size-full wp-image-17133\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/1_yelp_ver2.png 1074w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/1_yelp_ver2-300x172.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/1_yelp_ver2-768x439.png 768w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/1_yelp_ver2-1024x585.png 1024w\" sizes=\"(max-width: 1074px) 100vw, 1074px\" \/><\/p>\n<p>\u914d\u4fe1\u505c\u6b62\u3092\u5e0c\u671b\u3059\u308b\u53d7\u4fe1\u8005\u304c\u3053\u306e\u30cf\u30a4\u30d1\u30fc\u30ea\u30f3\u30af\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001\u30d8\u30c3\u30c0\u5185\u3067\u6307\u5b9a\u3055\u308c\u305fURL\u307e\u305f\u306f\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5b9b\u306b\u914d\u4fe1\u505c\u6b62\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u9001\u4fe1\u3055\u308c\u307e\u3059\u3002<br \/>\n\u3057\u305f\u304c\u3063\u3066\u3001\u914d\u4fe1\u505c\u6b62\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u4ed8\u3051\u308b\u4ed5\u7d44\u307f\u3082\u4f75\u305b\u3066\u6e96\u5099\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u3053\u306e\u8981\u4ef6\u306f\u3001\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u76ee\u7684\u306e\u30e1\u30fc\u30eb\uff08\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3084\u30e1\u30fc\u30eb\u30de\u30ac\u30b8\u30f3\u306a\u3069\uff09\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306b\u6e80\u305f\u3059\u5fc5\u8981\u304c\u3042\u308b\u3082\u306e\u3067\u3001\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\uff08\u30d1\u30b9\u30ef\u30fc\u30c9\u30ea\u30bb\u30c3\u30c8\u30e1\u30fc\u30eb\u3084\u4e88\u7d04\u78ba\u8a8d\u306e\u901a\u77e5\u30e1\u30fc\u30eb\u306a\u3069\uff09\u306e\u5834\u5408\u306f\u5bfe\u8c61\u5916\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30e1\u30fc\u30eb\u672c\u6587\u5185\u306e\u914d\u4fe1\u505c\u6b62\u30ea\u30f3\u30af\u8a2d\u7f6e\u3060\u3051\u3067\u306f\u8981\u4ef6\u3092\u6e80\u305f\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>List-Unsubscribe\u30d8\u30c3\u30c0\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=1822\" rel=\"noopener\" target=\"_blank\">\u3053\u3061\u3089<\/a>\u3082\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<h4>8\uff0e\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306f0.1%\u672a\u6e80\u306b\u7dad\u6301\u3057\u30010.3\uff05\u3092\u8d85\u3048\u308b\u3053\u3068\u306f\u907f\u3051\u307e\u3057\u3087\u3046<\/h4>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306f\u4f4e\u304f\u4fdd\u3061\u307e\u3057\u3087\u3046\u3002\u5024\u306e\u78ba\u8a8d\u306b\u306f<a href=\"https:\/\/www.gmail.com\/postmaster\/\" rel=\"noopener\" target=\"_blank\">Google Postmaster Tools<\/a>\u304c\u6709\u7528\u3067\u3059\u3002\u3053\u306e\u30c4\u30fc\u30eb\u3067\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306e\u7d50\u679c\u306a\u3069\u3082\u53c2\u7167\u3067\u304d\u308b\u305f\u3081\u3001\u5b9a\u671f\u7684\u306b\u78ba\u8a8d\u3057\u63a8\u79fb\u3092\u628a\u63e1\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/4_PostmasterTools.png\" rel=\"noopener\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/4_PostmasterTools.png\" alt=\"Google Postmaster Tools\u3067\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u78ba\u8a8d\" width=\"100%\" class=\"aligncenter size-full wp-image-17403\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/4_PostmasterTools.png 1009w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/4_PostmasterTools-300x69.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/02\/4_PostmasterTools-768x177.png 768w\" sizes=\"(max-width: 1009px) 100vw, 1009px\" \/><\/a><\/p>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u3092\u4e0b\u3052\u308b\u305f\u3081\u306b\u306f\u300c\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u308a\u305f\u3044\u3068\u671b\u3093\u3067\u3044\u308b\u4eba\u306e\u307f\u306b\u9001\u308b\u300d\u3053\u3068\u304c\u5fb9\u5e95\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u304c\u9054\u6210\u3067\u304d\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/User_Manual_JP\/Marketing_Campaigns\/Managing_Contacts\/building_your_contact_list.html#-Email-opt--in-types\" rel=\"noopener\" target=\"_blank\">\u30aa\u30d7\u30c8\u30a4\u30f3<\/a>\u3092\u3068\u308a\u3001\u660e\u78ba\u306b\u30e1\u30fc\u30eb\u3092\u671b\u3093\u3067\u3044\u308b\u5b9b\u5148\u306b\u306e\u307f\u9001\u4fe1\u3059\u308b<\/li>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=4205\" rel=\"noopener\" target=\"_blank\">Sunset Policy<\/a>\u3092\u5b9a\u3081\u3001\u4e00\u5b9a\u671f\u9593\u30e1\u30fc\u30eb\u304c\u958b\u5c01\u3084\u30af\u30ea\u30c3\u30af\u3055\u308c\u3066\u3044\u306a\u3044\u5b9b\u5148\u3092\u914d\u4fe1\u30ea\u30b9\u30c8\u304b\u3089\u9664\u5916\u3059\u308b<\/li>\n<\/ul>\n<h4>9\uff0eRFC 5322\u306b\u6e96\u62e0\u3059\u308b\u5f62\u5f0f\u3067\u9001\u308a\u307e\u3057\u3087\u3046<\/h4>\n<p><a href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc5322\" rel=\"noopener\" target=\"_blank\">RFC 5322<\/a>\u306f\u30e1\u30fc\u30eb\u306e\u6b63\u5f0f\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u5b9a\u7fa9\u3059\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6a19\u6e96\u3067\u3059\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u30d8\u30c3\u30c0\u3084\u30dc\u30c7\u30a3\u3001\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u3064\u3044\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u57fa\u672c\u7684\u306a\u4f5c\u6cd5\u306f\u3057\u3063\u304b\u308a\u5b88\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>10\uff0e\u9001\u4fe1\u7d4c\u8def\u306b\u306f\u30bb\u30ad\u30e5\u30a2\u901a\u4fe1\uff08TLS\uff09\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046<\/h4>\n<p>TLS\u3068\u306f\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002TLS\u63a5\u7d9a\u3092\u78ba\u7acb\u3059\u308b\u306b\u306f\u3001\u9001\u4fe1\u5074\u3068\u53d7\u4fe1\u5074\u53cc\u65b9\u304cTLS\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u3078\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u5fc5\u305aTLS\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\u3002Google\u306fTLS\u30d0\u30fc\u30b8\u30e7\u30f3 1.0\u30011.1\u30011.2\u30011.3\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u3088\u304f\u3042\u308b\u8cea\u554f\uff08FAQ\uff09\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8<\/h3>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831\u306f<a href=\"https:\/\/support.google.com\/a\/answer\/14229414\" rel=\"noopener\" target=\"_blank\">FAQ<\/a>\u306b\u307e\u3068\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u672c\u4f53\u3060\u3051\u3067\u306a\u304f\u3053\u3061\u3089\u3082\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3057\u3087\u3046\u3002<br \/>\n\u76f4\u8fd1\u3067\u65b0\u305f\u306b\u8ffd\u8a18\u3055\u308c\u305f\u4e3b\u8981\u306a\u9805\u76ee\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h4>Q.\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u3068\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\u306e\u898b\u5206\u3051\u65b9\u306f\uff1f<\/h4>\n<p>\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u306b\u8a72\u5f53\u3059\u308b\u304b\u3069\u3046\u304b\u306e\u5224\u65ad\u306fGoogle\u3067\u306f\u306a\u304f\u53d7\u4fe1\u8005\u304c\u884c\u3046\u3068\u306e\u3053\u3068\u3067\u3059\u3002\u5c11\u3057\u66d6\u6627\u306a\u56de\u7b54\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u306e\u914d\u4fe1\u505c\u6b62\u3084\u4f4e\u3044\u8ff7\u60d1\u30e1\u30fc\u30eb\u7387\u306e\u7dad\u6301\u3092\u5fb9\u5e95\u3059\u308b\u306e\u304c\u91cd\u8981\u3060\u3068\u3044\u3046\u3053\u3068\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n<h4>Q.\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u306e\u914d\u4fe1\u505c\u6b62\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30e1\u30fc\u30eb\u306f\u3069\u3046\u306a\u308b\u306e\u304b\ufe16<\/h4>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u8981\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u30e1\u30fc\u30eb\u304c\u81ea\u52d5\u7684\u306b\u53d7\u4fe1\u62d2\u5426\u3055\u308c\u305f\u308a\u30b9\u30d1\u30e0\u6271\u3044\u3055\u308c\u305f\u308a\u306f\u3057\u306a\u3044\u3068\u306e\u3053\u3068\u3002\u76f4\u3061\u306b\u5f71\u97ff\u306f\u306a\u3044\u3068\u601d\u308f\u308c\u307e\u3059\u304c\u3001<\/p>\n<ul>\n<li>\u3053\u306e\u3088\u3046\u306a\u30e1\u30fc\u30eb\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\u3055\u308c\u3084\u3059\u3044\u3068\u8003\u3048\u3089\u308c\u308b\u305f\u3081\u3001\u3044\u305a\u308c\u306f\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u5c4a\u304b\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/li>\n<li>Google\u306f\u3001\u8981\u4ef6\u3092\u3059\u3079\u3066\u6e80\u305f\u3057\u3066\u3044\u308b\u9001\u4fe1\u8005\u3078\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u512a\u5148\u7684\u306b\u884c\u3046<\/li>\n<\/ul>\n<p>\u3068\u3044\u3046\u8a18\u8ff0\u3082\u3042\u308b\u305f\u3081\u3001\u8981\u4ef6\u306b\u306f\u5bfe\u5fdc\u3057\u3066\u304a\u304f\u306e\u304c\u671b\u307e\u3057\u3044\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002<\/p>\n<h3>\u8ab0\u304c\u624b\u3092\u52d5\u304b\u305b\u3070\u3044\u3044\u306e\u304b<\/h3>\n<p>\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u898b\u308b\u3068\u308f\u304b\u308b\u3068\u304a\u308a\u3001\u9001\u4fe1\u8005\u8a8d\u8a3c\u306a\u3069\u306e\u4e8b\u524d\u8a2d\u5b9a\u3092\u3059\u308c\u3070\u7d42\u308f\u308a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u3001\u9001\u4fe1\u5f8c\u306b\u6ce8\u610f\u3059\u3079\u304d\u3053\u3068\u3082\u8981\u4ef6\u306b\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u8981\u4ef6\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u9001\u4fe1\u62c5\u5f53\u8005\u306e\u53cc\u65b9\u3067\u5354\u529b\u3057\u3042\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/029c0df654365705694155ea3dedf696.png\" alt=\"\u30a8\u30f3\u30b8\u30cb\u30a2\u3068\u30de\u30fc\u30b1\u30bf\u30fc\u306e\u5bfe\u5fdc\" width=\"100%\" class=\"aligncenter size-full wp-image-17231\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/029c0df654365705694155ea3dedf696.png 896w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/029c0df654365705694155ea3dedf696-300x135.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/029c0df654365705694155ea3dedf696-768x346.png 768w\" sizes=\"(max-width: 896px) 100vw, 896px\" \/><\/p>\n<h3>SendGrid\u3067\u5bfe\u5fdc\u53ef\u80fd\u306a\u9805\u76ee<\/h3>\n<p>SendGrid\u306e\u6a5f\u80fd\u306a\u3069\u3067\u5bfe\u5fdc\u53ef\u80fd\u306a\u3082\u306e\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u3067SPF\u3068DKIM\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\uff08<a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/Tutorials\/D_Improve_Deliverability\/using_whitelabel.html#-Domain-Whitelabel\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003<\/a>\uff09\n<ul style=\"margin-bottom:0.5em;\">\n<li>Domain Authentication\u306e\u8a2d\u5b9a\u753b\u9762\u306bDMARC\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u304c\u3001\u3053\u308c\u306f\u3042\u304f\u307e\u3067\u5fc5\u8981\u6700\u4f4e\u9650\u306e\u8a2d\u5b9a\u4f8b\u3092\u53c2\u8003\u60c5\u5831\u3068\u3057\u3066\u8868\u793a\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002DMARC\u306f\u5f53\u8a72\u30c9\u30e1\u30a4\u30f3\u3092\u5229\u7528\u3059\u308b\u5168\u3066\u306e\u30e1\u30fc\u30eb\uff08SendGrid\u4ee5\u5916\u304b\u3089\u306e\u9001\u4fe1\u3092\u542b\u3080\uff09\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u305f\u3081\u3001\u8a2d\u5b9a\u306f\u614e\u91cd\u306b\u884c\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>DMARC\u306f\u9001\u4fe1\u30e1\u30fc\u30eb\u306b\u4f55\u3089\u304b\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u306eDNS\u30b5\u30fc\u30d0\u306b\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3082\u306e\u3067\u3042\u308b\u305f\u3081\u3001DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u5185\u5bb9\u306b\u95a2\u3057\u3066\u306f\u5f0a\u793e\u30b5\u30dd\u30fc\u30c8\u306e\u5bfe\u8c61\u5916\u3067\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u30d8\u30c3\u30c0From\u30c9\u30e1\u30a4\u30f3\u306fSPF\u3001DKIM\u30c9\u30e1\u30a4\u30f3\u3068\u4e00\u81f4\u3055\u305b\u307e\u3057\u3087\u3046\uff08<a href=\"https:\/\/support.sendgrid.kke.co.jp\/hc\/ja\/articles\/203574969\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003<\/a>\uff09<\/li>\n<li>\u9001\u4fe1\u5143\u30c9\u30e1\u30a4\u30f3\u3001IP\u30a2\u30c9\u30ec\u30b9\u306b\u5bfe\u3057\u3001\u6709\u52b9\u306a\u6b63\u5f15\u304d\u3001\u9006\u5f15\u304dDNS\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\uff08<a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/Tutorials\/D_Improve_Deliverability\/using_whitelabel.html#-IP-Whitelabel\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003<\/a>\uff09\n<ul style=\"margin-bottom:0.5em;\">\n<li>Reverse DNS\u304c\u5229\u7528\u3067\u304d\u308b\u306e\u306f\u3001\u56fa\u5b9aIP\u30a2\u30c9\u30ec\u30b9\u304c\u5229\u7528\u53ef\u80fd\u306aPro\u30d7\u30e9\u30f3\u4ee5\u4e0a\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u3059\u3002Essential\u30d7\u30e9\u30f3\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3067\u306f\u3001\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u306a\u304fsendgrid.net\u30c9\u30e1\u30a4\u30f3\u3067\u9006\u5f15\u304d\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\uff08\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3067\u306f\u30e1\u30fc\u30eb\u306eFrom\u30c9\u30e1\u30a4\u30f3\u3068\u9006\u5f15\u304d\u30c9\u30e1\u30a4\u30f3\u304c\u4e00\u81f4\u3059\u3079\u304d\u304b\u307e\u3067\u306f\u8a00\u53ca\u3055\u308c\u3066\u3044\u307e\u305b\u3093\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u3067\u306e\u914d\u4fe1\u505c\u6b62\u306b\u5bfe\u5fdc\u3057\u307e\u3057\u3087\u3046\uff08<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=10316\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003<\/a>\uff09\n<ul style=\"margin-bottom:0.5em;\">\n<li>SendGrid\u306e\u914d\u4fe1\u505c\u6b62\u6a5f\u80fd\u3092\u5229\u7528\u3059\u308b\u3068\u81ea\u52d5\u7684\u306bList-Unsubscribe\u30d8\u30c3\u30c0\u304c\u633f\u5165\u3055\u308c\u3001\u914d\u4fe1\u505c\u6b62\u30ea\u30b9\u30c8\u306e\u7ba1\u7406\u3082SendGrid\u3067\u884c\u3048\u307e\u3059\u3002\u306a\u304a\u3001\u73fe\u6642\u70b9\u3067\u306fRFC8058\u306b\u5b8c\u5168\u306b\u306f\u6e96\u62e0\u3067\u304d\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u30012024\u5e743\u6708\u4e2d\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u6539\u4fee\u3092\u9032\u3081\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>RFC 5322\u306b\u6e96\u62e0\u3059\u308b\u5f62\u5f0f\u3067\u9001\u308a\u307e\u3057\u3087\u3046\uff08<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17031\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003<\/a>\uff09\n<ul style=\"margin-bottom:0.5em;\">\n<li>SendGrid\u3092\u5229\u7528\u3057\u3066\u3044\u308c\u3070\u3001\u7279\u306b\u5bfe\u51e6\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\u9001\u4fe1\u7d4c\u8def\u306b\u306f\u30bb\u30ad\u30e5\u30a2\u901a\u4fe1\uff08TLS\uff09\u3092\u5229\u7528\u3057\u307e\u3057\u3087\u3046\uff08<a href=\"https:\/\/www.twilio.com\/docs\/sendgrid\/for-developers\/sending-email\/support-for-tls-12\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003<\/a>\uff09\n<ul style=\"margin-bottom:0.em;\">\n<li>SendGrid\u3092\u5229\u7528\u3057\u3066\u3044\u308c\u3070\u3001\u7279\u306b\u5bfe\u51e6\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>\u304a\u3059\u3059\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30c4\u30fc\u30eb<\/h3>\n<p>\u4e00\u901a\u308a\u8a2d\u5b9a\u3057\u305f\u5f8c\u306f\u3001\u305d\u308c\u3089\u304c\u6b63\u3057\u304f\u9069\u7528\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u969b\u306b\u5f79\u7acb\u3064\u30c4\u30fc\u30eb\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h4><a href=\"https:\/\/dmarcian.com\/\" rel=\"noopener\" target=\"_blank\">dmarcian<\/a><\/h4>\n<p>\u9001\u4fe1\u8005\u8a8d\u8a3c\u7528\u306e\u30ec\u30b3\u30fc\u30c9\uff08SPF\u3001DKIM\u3001DMARC\u30ec\u30b3\u30fc\u30c9\uff09\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u8a3a\u65ad\u3057\u3066\u304f\u308c\u308b\u30c4\u30fc\u30eb\u3067\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/19d45115af5e0bc29ba6680a536f52dc.png\" alt=\"dmarcian\" width=\"100%\" class=\"aligncenter size-full wp-image-17232\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/19d45115af5e0bc29ba6680a536f52dc.png 1236w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/19d45115af5e0bc29ba6680a536f52dc-300x157.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/19d45115af5e0bc29ba6680a536f52dc-768x401.png 768w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/19d45115af5e0bc29ba6680a536f52dc-1024x534.png 1024w\" sizes=\"(max-width: 1236px) 100vw, 1236px\" \/><\/p>\n<h4><a href=\"https:\/\/www.mail-tester.com\/\" rel=\"noopener\" target=\"_blank\">mail-tester<\/a><\/h4>\n<p>\u5b9f\u969b\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3053\u3068\u3067\u3001\u9001\u4fe1\u8005\u8a8d\u8a3c\u306e\u8a2d\u5b9a\u72b6\u6cc1\u306e\u4ed6\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5ea6\u5408\u3044\u3092\u5224\u5b9a\u3057\u3066\u304f\u308c\u307e\u3059\u3002\u4f7f\u3044\u65b9\u306f<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=5190\" rel=\"noopener\" target=\"_blank\">\u3053\u3061\u3089<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/image4.png\" alt=\"mail-tester\" width=\"100%\" class=\"aligncenter size-full wp-image-17233\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/image4.png 421w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2023\/12\/image4-300x157.png 300w\" sizes=\"(max-width: 421px) 100vw, 421px\" \/><\/p>\n<p>\u672c\u7de8\u3067\u306f\u9001\u4fe1\u8005\u304c\u5bfe\u5fdc\u3059\u3079\u304d\u5185\u5bb9\u306b\u3064\u3044\u3066\u7d30\u304b\u304f\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u65e2\u306b\u8ff0\u3079\u305f\u3068\u304a\u308a\u3001<a href=\"https:\/\/support.google.com\/mail\/answer\/81126?hl=en\" rel=\"noopener\" target=\"_blank\">\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3<\/a>\u306f\u983b\u7e41\u306b\u66f4\u65b0\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n<p>\u30a6\u30a7\u30d3\u30ca\u30fc\u5f53\u65e5\u306b\u5bc4\u305b\u3089\u308c\u305f\u3054\u8cea\u554f\u306b\u306f\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3067\u56de\u7b54\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u3042\u308f\u305b\u3066\u3054\u89a7\u304f\u3060\u3055\u3044\uff01<\/p>\n<ul>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17313\" rel=\"noopener\" target=\"_blank\">12\/7\u306b\u30bb\u30df\u30ca\u30fc\u300cGmail\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\uff01\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304c\u4eca\u3084\u308b\u3079\u304d\u3053\u3068\u300d\u3092\u958b\u50ac\u3057\u307e\u3057\u305f\uff01\uff08Q&#038;A\u7de8\uff09<\/a><\/li>\n<li><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17477\" rel=\"noopener\" target=\"_blank\">1\/22\u306b\u30bb\u30df\u30ca\u30fc\u300cGmail\u65b0\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\uff01\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304c\u4eca\u3084\u308b\u3079\u304d\u3053\u3068\u300d\u3092\u958b\u50ac\u3057\u307e\u3057\u305f\uff01\uff08Q&#038;A\u7de8\uff09<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u306f\u3001Google\u3084Yahoo!\u3001\u305d\u306e\u4ed6\u95a2\u9023\u56e3\u4f53\u306e\u30bb\u30df\u30ca\u30fc\u958b\u50ac\u6642\u70b9\u3067\u306e\u516c\u958b\u60c5\u5831\u306b\u57fa\u3065\u3044\u3066\u57f7\u7b46\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u60c5\u5831\u306e\u6b63\u78ba\u6027\u306b\u95a2\u3057\u3066\u5f53\u793e\u306f\u8cac\u4efb\u3092\u8ca0\u3044\u304b\u306d\u307e\u3059\u3002\u5185\u5bb9\u306e\u5909\u66f4\u3084\u66f4\u65b0\u306b\u3064\u3044\u3066\u306f\u516c\u5f0f\u60c5\u5831\u3092\u968f\u6642\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002 1 <a class=\"read-more\" href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17213\">&#8230;\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":17322,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,9],"tags":[],"class_list":["post-17213","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-event","category-best-practices"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/17213","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=17213"}],"version-history":[{"count":26,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/17213\/revisions"}],"predecessor-version":[{"id":20487,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/17213\/revisions\/20487"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/17322"}],"wp:attachment":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}