{"id":1258,"date":"2024-10-06T14:04:02","date_gmt":"2024-10-06T05:04:02","guid":{"rendered":"https:\/\/first-create.com\/?p=1258"},"modified":"2025-05-23T13:25:40","modified_gmt":"2025-05-23T04:25:40","slug":"gmail-solution","status":"publish","type":"post","link":"https:\/\/first-create.com\/gmail-solution\/","title":{"rendered":"WEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089Gmail\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u304f\u306a\u3063\u305f\u3068\u304d\u306e\u5bfe\u51e6\u6cd5"},"content":{"rendered":"<p>\u300cWEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089Gmail\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u2026\u300d\u305d\u3093\u306a\u60a9\u307f\u3092\u62b1\u3048\u3066\u3044\u307e\u305b\u3093\u304b\uff1f<\/p>\n<p>\u5b9f\u306f\u3053\u306e\u30c8\u30e9\u30d6\u30eb\u3001\u5358\u306a\u308b\u9001\u4fe1\u30df\u30b9\u3067\u306f\u306a\u304f\u3001Gmail\u5074\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3084\u30e1\u30fc\u30eb\u8a8d\u8a3c\u8a2d\u5b9a\u306e\u4e0d\u5099\u304c\u539f\u56e0\u3067\u3042\u308b\u3053\u3068\u304c\u591a\u3044\u306e\u3067\u3059\u3002\u7279\u306b\u3001SPF\u30fbDKIM\u30fbDMARC\u3068\u3044\u3063\u305f\u30e1\u30fc\u30eb\u8a8d\u8a3c\u6280\u8853\u306e\u7406\u89e3\u3068\u6b63\u3057\u3044\u8a2d\u5b9a\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u305d\u3053\u3067\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3092\u6280\u8853\u7684\u306b\u89e3\u8aac\u3057\u306a\u304c\u3089\u3001\u4eca\u3059\u3050\u78ba\u8a8d\u3059\u3079\u304d\u8a2d\u5b9a\u9805\u76ee\u3084\u5177\u4f53\u7684\u306a\u5bfe\u51e6\u6cd5\u3092\u521d\u5fc3\u8005\u306b\u3082\u308f\u304b\u308a\u3084\u3059\u304f\u307e\u3068\u3081\u307e\u3057\u305f\u3002Gmail\u306b\u304d\u3061\u3093\u3068\u30e1\u30fc\u30eb\u3092\u5c4a\u3051\u305f\u3044\u65b9\u306f\u3001\u305c\u3072\u6700\u5f8c\u307e\u3067\u304a\u8aad\u307f\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>Gmail\u306bWEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u901a\u77e5\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3068\u306f\uff1f<\/h2>\n<p>WEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u901a\u77e5\u304cGmail\u306b\u5c4a\u304b\u306a\u3044\u5834\u5408\u3001\u539f\u56e0\u306f\u8907\u6570\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u6280\u8853\u7684\u306a\u8981\u56e0\u304c\u307b\u3068\u3093\u3069\u3067\u3042\u308a\u3001\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308c\u3070\u89e3\u6c7a\u3067\u304d\u308b\u30b1\u30fc\u30b9\u304c\u591a\u304f\u3042\u308a\u307e\u3059\u3002\u7279\u306bGmail\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u304c\u53b3\u683c\u3067\u3042\u308b\u305f\u3081\u3001\u7d30\u304b\u3044\u90e8\u5206\u307e\u3067\u30c1\u30a7\u30c3\u30af\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001Gmail\u306b\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3068\u3057\u3066\u3088\u304f\u3042\u308b3\u3064\u306e\u30b1\u30fc\u30b9\u3092\u53d6\u308a\u4e0a\u3052\u307e\u3059\u3002<\/b><\/p>\n<h3>Gmail\u5074\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u306e\u5f71\u97ff<\/h3>\n<p>\u6700\u521d\u306b\u7591\u3046\u3079\u304d\u306f\u3001Gmail\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u3067\u3059\u3002Gmail\u306b\u306fAI\u306b\u3088\u308b\u81ea\u52d5\u5224\u5b9a\u6a5f\u80fd\u304c\u5099\u308f\u3063\u3066\u304a\u308a\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u305f\u30e1\u30fc\u30eb\u306f\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u306f\u8868\u793a\u3055\u308c\u305a\u3001\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u300d\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n<p>\u5177\u4f53\u7684\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6761\u4ef6\u306b\u8a72\u5f53\u3059\u308b\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u672c\u6587\u306b\u4e0d\u81ea\u7136\u306a\u82f1\u8a9e\u8868\u73fe\u3084\u5e83\u544a\u7684\u306a\u8868\u73fe\u304c\u542b\u307e\u308c\u3066\u3044\u308b<\/li>\n<li>HTML\u5f62\u5f0f\u306e\u88c5\u98fe\u304c\u904e\u5ea6\u3067\u3042\u308b<\/li>\n<li>\u4e0d\u660e\u306a\u9001\u4fe1\u8005\u304b\u3089\u5c4a\u3044\u305f\u30e1\u30fc\u30eb\u3067\u3042\u308b<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306b\u8a72\u5f53\u3059\u308b\u30e1\u30fc\u30eb\u306f\u3001Gmail\u304c\u81ea\u52d5\u7684\u306b\u300c\u5371\u967a\u306a\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u3068\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n<p><b>\u3064\u307e\u308a\u3001\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u306e\u5185\u5bb9\u304c\u9069\u5207\u3067\u3042\u3063\u3066\u3082\u3001\u5f62\u5f0f\u3084\u9001\u4fe1\u5143\u306b\u3088\u3063\u3066\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u306e\u3067\u3059\u3002<\/b><\/p>\n<h3>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u4fe1\u983c\u6027\u8a55\u4fa1\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30af<\/h3>\n<p>\u6b21\u306b\u8003\u3048\u3089\u308c\u308b\u306e\u306f\u3001\u9001\u4fe1\u5143\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304cGmail\u304b\u3089\u4fe1\u983c\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u3088\u308b\u30d6\u30ed\u30c3\u30af\u3067\u3059\u3002Gmail\u3067\u306f\u3001\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u30fc\u306e\u8a55\u4fa1\u306b\u3088\u3063\u3066\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u53ef\u5426\u304c\u6c7a\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u614b\u306e\u30b5\u30fc\u30d0\u30fc\u306f\u4fe1\u983c\u6027\u304c\u4f4e\u3044\u3068\u307f\u306a\u3055\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>SPAM\u306e\u9001\u4fe1\u5b9f\u7e3e\u304c\u3042\u308b\u30b5\u30fc\u30d0\u30fc<\/li>\n<li>IP\u30a2\u30c9\u30ec\u30b9\u306e\u9006\u5f15\u304d\u8a2d\u5b9a\u304c\u3055\u308c\u3066\u3044\u306a\u3044<\/li>\n<li>\u5171\u6709\u30b5\u30fc\u30d0\u30fc\u3067\u4ed6\u30e6\u30fc\u30b6\u30fc\u304c\u554f\u984c\u3092\u8d77\u3053\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u9001\u3089\u308c\u308b\u30e1\u30fc\u30eb\u306f\u3001Gmail\u304c\u53d7\u4fe1\u3092\u62d2\u5426\u3059\u308b\u304b\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u4fe1\u983c\u6027\u306e\u4f4e\u3044\u30b5\u30fc\u30d0\u30fc\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001Gmail\u306b\u5c4a\u304b\u306a\u3044\u30ea\u30b9\u30af\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/b><\/p>\n<h3>\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u60c5\u5831\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u304c\u4e0d\u5099\u306e\u53ef\u80fd\u6027<\/h3>\n<p>\u6700\u5f8c\u306b\u91cd\u8981\u306a\u306e\u304c\u3001\u30e1\u30fc\u30eb\u8a8d\u8a3c\u60c5\u5831\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u30b1\u30fc\u30b9\u3067\u3059\u3002\u73fe\u5728\u306eGmail\u3067\u306f\u3001\u8a8d\u8a3c\u304c\u4e0d\u5341\u5206\u306a\u30e1\u30fc\u30eb\u306f\u5c4a\u304b\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u4e0b\u8a183\u3064\u306e\u6280\u8853\u306f\u5fc5\u9808\u3067\u3059\u3002<\/p>\n<ul>\n<li>SPF\uff08Sender Policy Framework\uff09\uff1a\u9001\u4fe1\u5143\u306eIP\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u898f\u306e\u9001\u4fe1\u8005\u304b\u78ba\u8a8d\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<li>DKIM\uff08DomainKeys Identified Mail\uff09\uff1a\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7f72\u540d\u3092\u3064\u3051\u3066\u6539\u3056\u3093\u304c\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u4ed5\u7d44\u307f<\/li>\n<li>DMARC\uff08Domain-based Message Authentication, Reporting, and Conformance\uff09\uff1aSPF\u3084DKIM\u3092\u7d71\u5408\u3057\u3066\u306a\u308a\u3059\u307e\u3057\u3092\u9632\u3050\u4ed5\u7d44\u307f<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u3046\u3061\u3072\u3068\u3064\u3067\u3082\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001Gmail\u306f\u53d7\u4fe1\u3092\u62d2\u5426\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070SPF\u30ec\u30b3\u30fc\u30c9\u304c\u672a\u767b\u9332\u3060\u3063\u305f\u5834\u5408\u3001Gmail\u5074\u3067\u306f\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u9001\u4fe1\u8005\u3092\u507d\u88c5\u3057\u3066\u3044\u308b\u304b\u3082\u3057\u308c\u306a\u3044\u300d\u3068\u5224\u65ad\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><b>SPF\u30fbDKIM\u30fbDMARC\u304c\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u72b6\u614b\u306f\u3001Gmail\u3078\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u3068\u3063\u3066\u91cd\u5927\u306a\u969c\u5bb3\u3068\u306a\u308a\u307e\u3059\u3002<\/b><\/p>\n<h2>\u307e\u305a\u78ba\u8a8d\u3057\u305f\u3044\u57fa\u672c\u7684\u306a\u30e1\u30fc\u30eb\u8a2d\u5b9a\u9805\u76ee<\/h2>\n<p>WEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u3063\u305f\u30e1\u30fc\u30eb\u304cGmail\u306b\u5c4a\u304b\u306a\u3044\u5834\u5408\u3001\u307e\u305a\u306f\u57fa\u672c\u7684\u306a\u30e1\u30fc\u30eb\u8a2d\u5b9a\u3092\u898b\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u3084\u8a8d\u8a3c\u8a2d\u5b9a\u3092\u7591\u3046\u524d\u306b\u3001\u8a2d\u5b9a\u30df\u30b9\u3084\u8a18\u8ff0\u6f0f\u308c\u306a\u3069\u3001\u521d\u6b69\u7684\u306a\u539f\u56e0\u3092\u53d6\u308a\u9664\u304f\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001Gmail\u306b\u5c4a\u304b\u306a\u3044\u30e1\u30fc\u30eb\u306e\u539f\u56e0\u3092\u63a2\u308b\u305f\u3081\u306b\u6700\u521d\u306b\u30c1\u30a7\u30c3\u30af\u3059\u3079\u304d\u9805\u76ee\u30923\u3064\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>\u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u8aa4\u308a\u306f\u306a\u3044\u304b\uff1f<\/h3>\n<p>\u4e00\u756a\u5358\u7d14\u306a\u30df\u30b9\u304c\u3001\u9001\u4fe1\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5165\u529b\u9593\u9055\u3044\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e1\u6587\u5b57\u9055\u3044\u3067\u3082\u3001Gmail\u306b\u306f\u5c4a\u304d\u307e\u305b\u3093\u3002\u898b\u305f\u76ee\u306b\u306f\u5408\u3063\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u3066\u3082\u3001\u5b9f\u969b\u306b\u306f\u300c\u5168\u89d2\u30b9\u30da\u30fc\u30b9\u300d\u300c@\u306e\u7a2e\u985e\u300d\u300c.com\u306e\u7db4\u308a\u300d\u306a\u3069\u304c\u8aa4\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u7279\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8aa4\u308a\u304c\u3088\u304f\u898b\u3089\u308c\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u300c\uff20\u300d\u304c\u5168\u89d2\u306b\u306a\u3063\u3066\u3044\u308b<\/li>\n<li>\u300c.co.jp\u300d\u3092\u300c.com\u300d\u3068\u5165\u529b\u3057\u3066\u3044\u308b<\/li>\n<li>\u30b9\u30da\u30fc\u30b9\u304c\u6df7\u5165\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<p>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u30b3\u30d4\u30fc\u30da\u30fc\u30b9\u30c8\u305b\u305a\u624b\u5165\u529b\u3057\u305f\u5834\u5408\u3001\u6253\u3061\u9593\u9055\u3044\u306e\u53ef\u80fd\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002\u624b\u52d5\u5165\u529b\u306e\u5834\u5408\u306f2\u56de\u4ee5\u4e0a\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><b>\u307e\u305a\u306f\u9001\u4fe1\u5148\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u5b8c\u5168\u306b\u6b63\u3057\u3044\u304b\u3001\u76ee\u8996\u3068\u30c6\u30b9\u30c8\u9001\u4fe1\u3067\u78ba\u5b9f\u306b\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/b><\/p>\n<h3>\u300cFrom\u300d\u30a2\u30c9\u30ec\u30b9\u3068\u300cReturn-Path\u300d\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\uff1f<\/h3>\n<p>\u6b21\u306b\u78ba\u8a8d\u3059\u3079\u304d\u306f\u3001\u300cFrom\u300d\u30a2\u30c9\u30ec\u30b9\u3068\u300cReturn-Path\uff08\u30ea\u30bf\u30fc\u30f3\u30d1\u30b9\uff09\u300d\u306e\u4e00\u81f4\u3067\u3059\u3002\u300cFrom\u300d\u306f\u53d7\u4fe1\u8005\u306b\u8868\u793a\u3055\u308c\u308b\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u3067\u3001\u300cReturn-Path\u300d\u306f\u30e1\u30fc\u30eb\u30a8\u30e9\u30fc\u6642\u306e\u8fd4\u4fe1\u5148\u30a2\u30c9\u30ec\u30b9\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e2\u3064\u304c\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044\u3068\u3001Gmail\u306f\u300c\u306a\u308a\u3059\u307e\u3057\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u300d\u3068\u5224\u65ad\u3057\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u3046\u304b\u3001\u30e1\u30fc\u30eb\u81ea\u4f53\u3092\u62d2\u5426\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u72b6\u614b\u304c\u554f\u984c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>From\uff1ainfo@example.com \uff0f Return-Path\uff1aform@anotherdomain.com<\/li>\n<li>Return-Path\u304c\u672a\u8a2d\u5b9a\u3067\u81ea\u52d5\u633f\u5165\u3055\u308c\u305f\u7570\u306a\u308b\u30a2\u30c9\u30ec\u30b9\u306b\u306a\u3063\u3066\u3044\u308b<\/li>\n<\/ul>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u907f\u3051\u308b\u306b\u306f\u3001\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u30e1\u30fc\u30eb\u306e\u300cFrom\u300d\u3068\u300cReturn-Path\u300d\u306e\u30c9\u30e1\u30a4\u30f3\u3084\u6587\u5b57\u5217\u3092\u4e00\u81f4\u3055\u305b\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><b>Gmail\u306b\u78ba\u5b9f\u306b\u30e1\u30fc\u30eb\u3092\u5c4a\u3051\u308b\u305f\u3081\u306b\u306f\u3001\u9001\u4fe1\u8005\u60c5\u5831\u306b\u77db\u76fe\u304c\u306a\u3044\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/b><\/p>\n<h3>\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u5f8c\u306e\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3084\u30ed\u30b0\u306e\u78ba\u8a8d\u65b9\u6cd5<\/h3>\n<p>\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u5f8c\u306b\u8868\u793a\u3055\u308c\u308b\u753b\u9762\u3084\u3001\u30b5\u30fc\u30d0\u30fc\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u3001\u554f\u984c\u306e\u624b\u304c\u304b\u308a\u304c\u5f97\u3089\u308c\u307e\u3059\u3002\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u5f8c\u306b\u300c\u9001\u4fe1\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u300d\u306a\u3069\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u30e1\u30fc\u30eb\u51e6\u7406\u306b\u5931\u6557\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u3084VPS\u306b\u306f\u30a8\u30e9\u30fc\u30ed\u30b0\u3084\u30e1\u30fc\u30eb\u30ed\u30b0\u304c\u8a18\u9332\u3055\u308c\u308b\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>Apache\u3084nginx\u306e\u30a8\u30e9\u30fc\u30ed\u30b0<\/li>\n<li>sendmail\u3084postfix\u306e\u30e1\u30fc\u30eb\u30ed\u30b0<\/li>\n<li>WordPress\u306e\u5834\u5408\u306f\u300cWP Mail Logging\u300d\u306a\u3069\u306e\u30d7\u30e9\u30b0\u30a4\u30f3<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u3092\u78ba\u8a8d\u3059\u308c\u3070\u3001SMTP\u8a8d\u8a3c\u306e\u5931\u6557\u3084DNS\u30a8\u30e9\u30fc\u306a\u3069\u3001\u5177\u4f53\u7684\u306a\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u7a81\u304d\u6b62\u3081\u3089\u308c\u307e\u3059\u3002\u76ee\u306b\u898b\u3048\u306a\u3044\u30a8\u30e9\u30fc\u3092\u653e\u7f6e\u305b\u305a\u3001\u8a18\u9332\u3055\u308c\u305f\u60c5\u5831\u3092\u3082\u3068\u306b\u4e00\u3064\u305a\u3064\u539f\u56e0\u3092\u7279\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><b>\u9001\u4fe1\u7d50\u679c\u3092\u300c\u6210\u529f\u3057\u305f\u304b\u3069\u3046\u304b\u300d\u3060\u3051\u3067\u5224\u65ad\u305b\u305a\u3001\u30a8\u30e9\u30fc\u30ed\u30b0\u3092\u5fc5\u305a\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u30c8\u30e9\u30d6\u30eb\u89e3\u6c7a\u306e\u7b2c\u4e00\u6b69\u3067\u3059\u3002<\/b><\/p>\n<h2>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3068\u6b63\u3057\u3044\u8a18\u8ff0\u4f8b<\/h2>\n<p>Gmail\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u3072\u3068\u3064\u3068\u3057\u3066\u3001SPF\u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u307e\u3059\u3002SPF\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u5143\u304c\u6b63\u898f\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u8a2d\u5b9a\u306b\u4e0d\u5099\u304c\u3042\u308b\u3068\u3001Gmail\u306f\u300c\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u300d\u3068\u5224\u65ad\u3057\u3001\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3089\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001SPF\u306e\u6982\u8981\u3068\u8a2d\u5b9a\u65b9\u6cd5\u3001\u78ba\u8a8d\u624b\u9806\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>SPF\u3068\u306f\uff1fGmail\u304cSPF\u3092\u78ba\u8a8d\u3059\u308b\u7406\u7531<\/h3>\n<p>SPF\uff08Sender Policy Framework\uff09\u3068\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306b\u767b\u9332\u3059\u308b\u3053\u3068\u3067\u3001\u7279\u5b9a\u306eIP\u30a2\u30c9\u30ec\u30b9\u3084\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u9001\u4fe1\u3092\u8a31\u53ef\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/p>\n<p>Gmail\u304cSPF\u3092\u78ba\u8a8d\u3059\u308b\u7406\u7531\u306f\u3001\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306e\u6392\u9664<\/li>\n<li>\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u3068IP\u30a2\u30c9\u30ec\u30b9\u306e\u4e00\u81f4\u78ba\u8a8d<\/li>\n<li>\u30b9\u30d1\u30e0\u5224\u5b9a\u306e\u7cbe\u5ea6\u5411\u4e0a<\/li>\n<\/ul>\n<p>\u305f\u3068\u3048\u3070\u3001\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\uff08example.com\uff09\u3092\u4f7f\u3063\u3066\u4ed6\u4eba\u304c\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3092\u9632\u3050\u305f\u3081\u306b\u3001SPF\u3067\u300c\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u3057\u304b\u9001\u4fe1\u3057\u307e\u305b\u3093\u300d\u3068\u5ba3\u8a00\u3059\u308b\u306e\u3067\u3059\u3002<\/p>\n<p><b>Gmail\u306f\u3053\u306e\u60c5\u5831\u3092\u3082\u3068\u306b\u3001\u4fe1\u983c\u3067\u304d\u308b\u9001\u4fe1\u8005\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3066\u53d7\u4fe1\u53ef\u5426\u3092\u6c7a\u3081\u3066\u3044\u307e\u3059\u3002<\/b><\/p>\n<h3>\u6b63\u3057\u3044SPF\u30ec\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9\uff08\u4f8b\u4ed8\u304d\uff09<\/h3>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306f\u3001DNS\u306eTXT\u30ec\u30b3\u30fc\u30c9\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002\u5f62\u5f0f\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u9593\u9055\u3048\u308b\u3068\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u304c\u62d2\u5426\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre><code>v=spf1 include:sendgrid.net ~all<\/code><\/pre>\n<p>\u3053\u306e\u8a18\u8ff0\u306e\u610f\u5473\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><b>v=spf1<\/b>\uff1aSPF\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u5ba3\u8a00<\/li>\n<li><b>include:sendgrid.net<\/b>\uff1aSendGrid\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u8a31\u53ef<\/li>\n<li><b>~all<\/b>\uff1a\u300c\u4e0a\u8a18\u4ee5\u5916\u306e\u30b5\u30fc\u30d0\u30fc\u306f\u8a31\u53ef\u3057\u306a\u3044\uff08\u30bd\u30d5\u30c8\u30d5\u30a7\u30a4\u30eb\uff09\u300d<\/li>\n<\/ul>\n<p>\u4ed6\u306b\u3082\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u66f8\u304d\u65b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code>v=spf1 ip4:123.456.78.90 -all<\/code><\/pre>\n<p>\u3053\u306e\u5834\u5408\u306f\u3001\u6307\u5b9a\u3057\u305fIP\u30a2\u30c9\u30ec\u30b9\u4ee5\u5916\u304b\u3089\u306e\u9001\u4fe1\u3092\u3059\u3079\u3066\u62d2\u5426\u3059\u308b\u8a2d\u5b9a\u3067\u3059\uff08-all \u306f\u300c\u30cf\u30fc\u30c9\u30d5\u30a7\u30a4\u30eb\u300d\u3092\u610f\u5473\u3057\u307e\u3059\uff09\u3002<\/p>\n<p><b>\u9593\u9055\u3063\u305f\u69cb\u6587\u3084\u8a18\u8ff0\u30df\u30b9\u304c\u3042\u308b\u3068\u3001Gmail\u306f\u30e1\u30fc\u30eb\u3092\u62d2\u5426\u3059\u308b\u305f\u3081\u3001\u6b63\u78ba\u306a\u8a2d\u5b9a\u304c\u91cd\u8981\u3067\u3059\u3002<\/b><\/p>\n<h3>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\u3068DNS\u53cd\u6620\u306e\u624b\u9806<\/h3>\n<p>SPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\u304c\u7d42\u308f\u3063\u305f\u3089\u3001\u53cd\u6620\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u8a2d\u5b9a\u30df\u30b9\u3084\u672a\u53cd\u6620\u306e\u72b6\u614b\u3067\u306f\u610f\u5473\u304c\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u78ba\u8a8d\u306b\u306f\u4ee5\u4e0b\u306e\u30c4\u30fc\u30eb\u304c\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<ul>\n<li>Google Admin Toolbox\uff1a<a href=\"https:\/\/toolbox.googleapps.com\/apps\/checkmx\/\">https:\/\/toolbox.googleapps.com\/apps\/checkmx\/<\/a><\/li>\n<li>mxtoolbox\uff1a<a href=\"https:\/\/mxtoolbox.com\/spf.aspx\">https:\/\/mxtoolbox.com\/spf.aspx<\/a><\/li>\n<\/ul>\n<p>\u3044\u305a\u308c\u3082\u30c9\u30e1\u30a4\u30f3\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067\u3001SPF\u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u8a3a\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001DNS\u306b\u8a2d\u5b9a\u3057\u3066\u304b\u3089\u53cd\u6620\u3055\u308c\u308b\u307e\u3067\u306b\u6700\u592772\u6642\u9593\u304b\u304b\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3059\u3050\u306b\u53cd\u6620\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u3001\u5c11\u3057\u6642\u9593\u3092\u7a7a\u3051\u3066\u304b\u3089\u518d\u5ea6\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<p><b>SPF\u8a2d\u5b9a\u306f\u300c\u767b\u9332\u3057\u305f\u3060\u3051\u300d\u3067\u7d42\u308f\u308a\u3067\u306f\u306a\u304f\u3001\u300c\u53cd\u6620\u3055\u308c\u3001\u6b63\u3057\u304f\u52d5\u4f5c\u3057\u3066\u3044\u308b\u304b\u300d\u307e\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/b><\/p>\n<h2>DKIM\u3067\u30e1\u30fc\u30eb\u306e\u6539\u3056\u3093\u9632\u6b62\uff01\u8a2d\u5b9a\u3068\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/h2>\n<p>\u30e1\u30fc\u30eb\u304cGmail\u306b\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u4e00\u3064\u306b\u3001DKIM\uff08\u30c7\u30a3\u30fc\u30ad\u30e0\uff09\u3068\u3044\u3046\u8a8d\u8a3c\u306e\u672a\u8a2d\u5b9a\u304c\u3042\u308a\u307e\u3059\u3002DKIM\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u9001\u4fe1\u5143\u306e\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u304c\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u306b\u96fb\u5b50\u7f72\u540d\u3092\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001DKIM\u306e\u57fa\u672c\u7684\u306a\u4ed5\u7d44\u307f\u3068\u8a2d\u5b9a\u624b\u9806\u3001\u305d\u3057\u3066Gmail\u3067\u306e\u78ba\u8a8d\u65b9\u6cd5\u307e\u3067\u3092\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>DKIM\u3068\u306f\uff1f\u7f72\u540d\u3067\u4fe1\u983c\u6027\u3092\u62c5\u4fdd\u3059\u308b\u4ed5\u7d44\u307f<\/h3>\n<p>DKIM\uff08DomainKeys Identified Mail\uff09\u3068\u306f\u3001\u9001\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u306b\u300c\u96fb\u5b50\u7f72\u540d\u300d\u3092\u4ed8\u3051\u3066\u3001\u305d\u306e\u30e1\u30fc\u30eb\u304c\u6b63\u5f53\u306a\u9001\u4fe1\u8005\u304b\u3089\u9001\u3089\u308c\u305f\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u8a3c\u660e\u3059\u308b\u6280\u8853\u3067\u3059\u3002<\/p>\n<p>\u4ed5\u7d44\u307f\u306f\u6b21\u306e\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306b\u3001\u30e1\u30fc\u30eb\u672c\u6587\u3068\u30d8\u30c3\u30c0\u30fc\u306b\u5bfe\u3057\u3066\u7f72\u540d\uff08\u6697\u53f7\uff09\u3092\u4ed8\u52a0\u3059\u308b<\/li>\n<li>\u53d7\u4fe1\u8005\u5074\uff08Gmail\u306a\u3069\uff09\u306f\u3001\u516c\u958b\u9375\u3092DNS\u3067\u53d6\u5f97\u3057\u3001\u7f72\u540d\u304c\u6b63\u3057\u3044\u304b\u3092\u691c\u8a3c\u3059\u308b<\/li>\n<\/ul>\n<p>\u3053\u306e\u96fb\u5b50\u7f72\u540d\u304c\u4e00\u81f4\u3057\u3066\u3044\u308c\u3070\u3001\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306f\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u300d\u3068\u5224\u65ad\u3055\u308c\u3001\u4fe1\u983c\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u9006\u306b\u7f72\u540d\u304c\u4e0d\u4e00\u81f4\u3001\u307e\u305f\u306fDKIM\u304c\u672a\u8a2d\u5b9a\u306e\u5834\u5408\u3001Gmail\u306f\u30e1\u30fc\u30eb\u3092\u7591\u3044\u3001\u53d7\u4fe1\u3092\u62d2\u5426\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u3064\u307e\u308a\u3001DKIM\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u306e\u4fe1\u983c\u6027\u3092\u5b88\u308b\u305f\u3081\u306b\u5fc5\u9808\u306e\u8a2d\u5b9a\u3067\u3059\u3002<\/b><\/p>\n<h3>DKIM\u306e\u9375\u767a\u884c\u3068DNS\u3078\u306e\u516c\u958b\u624b\u9806<\/h3>\n<p>DKIM\u306e\u8a2d\u5b9a\u306b\u306f\u3001\u300c\u79d8\u5bc6\u9375\u300d\u3068\u300c\u516c\u958b\u9375\u300d\u306e\u30da\u30a2\u3092\u4f5c\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u79d8\u5bc6\u9375\u306f\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306b\u7f72\u540d\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u3001\u516c\u958b\u9375\u306fDNS\u306b\u767b\u9332\u3057\u3066\u53d7\u4fe1\u5074\u304c\u691c\u8a3c\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>\u8a2d\u5b9a\u624b\u9806\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3084\u9001\u4fe1\u30b5\u30fc\u30d3\u30b9\uff08SendGrid\u3084Google Workspace\uff09\u3067DKIM\u30ad\u30fc\u3092\u751f\u6210<\/li>\n<li>\u516c\u958b\u9375\u3092\u542b\u3080TXT\u30ec\u30b3\u30fc\u30c9\u3092\u3001\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306b\u8ffd\u52a0<\/li>\n<li>\u30e1\u30fc\u30eb\u9001\u4fe1\u8a2d\u5b9a\u3067DKIM\u7f72\u540d\u3092\u6709\u52b9\u5316<\/li>\n<\/ol>\n<p>TXT\u30ec\u30b3\u30fc\u30c9\u306e\u5f62\u5f0f\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff08\u4e00\u4f8b\uff09\uff1a<\/p>\n<pre><code>default._domainkey.example.com. IN TXT \"v=DKIM1; k=rsa; p=MIGfMA0GCSqG...\"<\/code><\/pre>\n<p>\u3053\u3053\u3067\u300cdefault\u300d\u306f\u30bb\u30ec\u30af\u30bf\u3068\u547c\u3070\u308c\u308b\u8b58\u5225\u5b50\u3067\u3059\u3002\u300cp=\u300d\u306e\u5f8c\u308d\u306b\u306f\u516c\u958b\u9375\u304c\u7d9a\u304d\u307e\u3059\u3002\u3053\u308c\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001\u53d7\u4fe1\u8005\u5074\u3067\u691c\u8a3c\u3067\u304d\u305a\u3001\u8a8d\u8a3c\u5931\u6557\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u516c\u958b\u9375\u306eDNS\u767b\u9332\u306f\u3001\u5fc5\u305a\u6b63\u3057\u3044\u5f62\u5f0f\u3067\u884c\u3044\u307e\u3057\u3087\u3046\u3002<\/b><\/p>\n<h3>Gmail\u3067DKIM\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/h3>\n<p>DKIM\u3092\u8a2d\u5b9a\u3057\u305f\u5f8c\u306f\u3001\u5b9f\u969b\u306bGmail\u304c\u8a8d\u8a3c\u3092\u901a\u904e\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u78ba\u8a8d\u624b\u9806\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>Gmail\u3067\u81ea\u5206\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1<\/li>\n<li>\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u3092\u958b\u304d\u3001\u53f3\u4e0a\u306e\u300c\ufe19\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30bd\u30fc\u30b9\u3092\u8868\u793a\u300d\u3092\u9078\u629e<\/li>\n<li>\u00a0\u30d8\u30c3\u30c0\u30fc\u60c5\u5831\u306e\u4e2d\u306b\u3042\u308b\u300cDKIM\u300d\u306e\u9805\u76ee\u3092\u78ba\u8a8d<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308c\u3070\u8a8d\u8a3c\u6210\u529f\u3067\u3059\u3002<\/p>\n<pre><code>dkim=pass header.i=@example.com<\/code><\/pre>\n<p>\u4e00\u65b9\u3067\u3001\u6b21\u306e\u3088\u3046\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u7f72\u540d\u304c\u4e0d\u6b63\u304b\u672a\u8a2d\u5b9a\u306e\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code>dkim=fail (bad signature)<\/code><\/pre>\n<p><b>Gmail\u3067\u306fDKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u304c\u660e\u78ba\u306b\u8868\u793a\u3055\u308c\u308b\u305f\u3081\u3001\u8a2d\u5b9a\u78ba\u8a8d\u306e\u624b\u6bb5\u3068\u3057\u3066\u975e\u5e38\u306b\u6709\u52b9\u3067\u3059\u3002<\/b><\/p>\n<h2>DMARC\u3067\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\uff01SPF\u30fbDKIM\u3068\u306e\u95a2\u4fc2\u3068\u306f\uff1f<\/h2>\n<p>Gmail\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u4e2d\u3067\u3082\u3001\u8fd1\u5e74\u7279\u306b\u91cd\u8981\u8996\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u300cDMARC\uff08\u30c7\u30a3\u30fc\u30de\u30fc\u30af\uff09\u300d\u306e\u8a2d\u5b9a\u3067\u3059\u3002DMARC\u306f\u3001SPF\u3084DKIM\u3092\u5229\u7528\u3057\u305f\u30e1\u30fc\u30eb\u306e\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u3092\u3055\u3089\u306b\u5f37\u5316\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002Gmail\u306fDMARC\u3092\u78ba\u8a8d\u3057\u3001\u30dd\u30ea\u30b7\u30fc\u306b\u5f93\u3063\u3066\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u53ef\u5426\u3092\u5224\u65ad\u3057\u307e\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001DMARC\u306e\u57fa\u672c\u7684\u306a\u5f79\u5272\u3068\u8a2d\u5b9a\u69cb\u6587\u3001\u305d\u3057\u3066\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>DMARC\u306e\u5f79\u5272\u3068Gmail\u3078\u306e\u5f71\u97ff<\/h3>\n<p>DMARC\uff08Domain-based Message Authentication, Reporting and Conformance\uff09\u3068\u306f\u3001SPF\u3084DKIM\u306e\u8a8d\u8a3c\u7d50\u679c\u306b\u57fa\u3065\u304d\u3001\u53d7\u4fe1\u5074\u304c\u3069\u306e\u3088\u3046\u306b\u30e1\u30fc\u30eb\u3092\u51e6\u7406\u3059\u308b\u304b\u3092\u6307\u793a\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002SPF\u3084DKIM\u304c\u5931\u6557\u3057\u305f\u3068\u304d\u306b\u3001\u300c\u3069\u3046\u6271\u3046\u3079\u304d\u304b\u300d\u3092\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u5074\u304b\u3089\u5ba3\u8a00\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Gmail\u306fDMARC\u3092\u53c2\u7167\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5224\u65ad\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>SPF\u3084DKIM\u306e\u3069\u3061\u3089\u304b\u304c\u6709\u52b9\u3067\u3001DMARC\u306e\u6574\u5408\u6027\u3082OK \u2192 \u30e1\u30fc\u30eb\u3092\u53d7\u4fe1<\/li>\n<li>SPF\u3068DKIM\u306e\u4e21\u65b9\u304c\u5931\u6557 \u2192 DMARC\u30dd\u30ea\u30b7\u30fc\u306b\u5f93\u3044\u62d2\u5426\u307e\u305f\u306f\u8ff7\u60d1\u30e1\u30fc\u30eb\u3078<\/li>\n<\/ul>\n<p>DMARC\u306e\u5b58\u5728\u306b\u3088\u308a\u3001\u9001\u4fe1\u5143\u306e\u4fe1\u983c\u6027\u304c\u4e00\u6bb5\u3068\u5f37\u5316\u3055\u308c\u3001Gmail\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u306e\u7cbe\u5ea6\u3082\u4e0a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u3064\u307e\u308a\u3001DMARC\u306f\u300c\u30e1\u30fc\u30eb\u304c\u306a\u308a\u3059\u307e\u3057\u304b\u3069\u3046\u304b\u300d\u3092\u5224\u65ad\u3059\u308b\u6700\u7d42\u7684\u306a\u30eb\u30fc\u30eb\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>DMARC\u30dd\u30ea\u30b7\u30fc\u306e\u57fa\u672c\u69cb\u6587\u3068\u8a2d\u5b9a\u4f8b<\/h3>\n<p>DMARC\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306eDNS\u306bTXT\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u66f8\u5f0f\u306f\u6bd4\u8f03\u7684\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u91cd\u8981\u306a\u610f\u5473\u3092\u6301\u3064\u69cb\u6587\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u57fa\u672c\u7684\u306a\u69cb\u6587\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<pre><code>v=DMARC1; p=none; rua=mailto:dmarc-report@example.com<\/code><\/pre>\n<p>\u3053\u306e\u8a18\u8ff0\u306e\u5404\u90e8\u5206\u306f\u3001\u4ee5\u4e0b\u306e\u610f\u5473\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n<ul>\n<li><b>v=DMARC1<\/b>\uff1aDMARC\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u6307\u5b9a<\/li>\n<li><b>p=none<\/b>\uff1a\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\uff08none\uff1d\u76e3\u8996\u306e\u307f\u3001quarantine\uff1d\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3001reject\uff1d\u53d7\u4fe1\u62d2\u5426\uff09<\/li>\n<li><b>rua=mailto:\uff5e<\/b>\uff1a\u30ec\u30dd\u30fc\u30c8\u306e\u9001\u4fe1\u5148\u30a2\u30c9\u30ec\u30b9<\/li>\n<\/ul>\n<p>\u305f\u3068\u3048\u3070\u3001\u3088\u308a\u53b3\u683c\u306a\u8a2d\u5b9a\u306b\u3059\u308b\u5834\u5408\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n<pre><code>v=DMARC1; p=reject; rua=mailto:dmarc-report@example.com<\/code><\/pre>\n<p>\u3053\u306e\u8a2d\u5b9a\u306b\u3088\u308a\u3001SPF\u3084DKIM\u304c\u901a\u3089\u306a\u304b\u3063\u305f\u30e1\u30fc\u30eb\u306f\u3059\u3079\u3066\u62d2\u5426\u3055\u308c\u3001\u306a\u308a\u3059\u307e\u3057\u3092\u672a\u7136\u306b\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><b>DMARC\u306e\u30dd\u30ea\u30b7\u30fc\u8a2d\u5b9a\u306b\u3088\u3063\u3066\u3001Gmail\u3078\u306e\u30e1\u30fc\u30eb\u5230\u9054\u7387\u304c\u5927\u304d\u304f\u5909\u308f\u308b\u305f\u3081\u614e\u91cd\u306b\u69cb\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/b><\/p>\n<h3>DMARC\u30ec\u30dd\u30fc\u30c8\u3067\u914d\u4fe1\u72b6\u6cc1\u3092\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u65b9\u6cd5<\/h3>\n<p>DMARC\u3067\u306f\u3001\u30dd\u30ea\u30b7\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5b9f\u969b\u306b\u3069\u306e\u30e1\u30fc\u30eb\u304c\u8a8d\u8a3c\u306b\u6210\u529f\u3057\u3001\u3069\u308c\u304c\u5931\u6557\u3057\u305f\u304b\u3092\u30ec\u30dd\u30fc\u30c8\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30ec\u30dd\u30fc\u30c8\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6b63\u898f\u306e\u30e1\u30fc\u30eb\u304c\u8aa4\u3063\u3066\u62d2\u5426\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3001\u4e0d\u6b63\u306a\u9001\u4fe1\u304c\u306a\u3044\u304b\u3092\u628a\u63e1\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30ec\u30dd\u30fc\u30c8\u3092\u78ba\u8a8d\u3059\u308b\u624b\u9806\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>DMARC\u306erua\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u53d7\u4fe1\u7528\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a<\/li>\n<li>\u5404\u30e1\u30fc\u30eb\u53d7\u4fe1\u30b5\u30fc\u30d3\u30b9\uff08Gmail\u306a\u3069\uff09\u304b\u3089XML\u5f62\u5f0f\u306e\u30ec\u30dd\u30fc\u30c8\u304c\u5b9a\u671f\u7684\u306b\u5c4a\u304f<\/li>\n<li>DMARC\u89e3\u6790\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u30ec\u30dd\u30fc\u30c8\u5185\u5bb9\u3092\u53ef\u8996\u5316<\/li>\n<\/ol>\n<p>\u89e3\u6790\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7121\u6599\u30c4\u30fc\u30eb\u304c\u4fbf\u5229\u3067\u3059\u3002<\/p>\n<ul>\n<li>DMARC Analyzer\uff08<a href=\"https:\/\/www.dmarcanalyzer.com\/\">https:\/\/www.dmarcanalyzer.com\/<\/a>\uff09<\/li>\n<li>Postmark DMARC Viewer\uff08<a href=\"https:\/\/dmarc.postmarkapp.com\/\">https:\/\/dmarc.postmarkapp.com\/<\/a>\uff09<\/li>\n<\/ul>\n<p>\u30ec\u30dd\u30fc\u30c8\u306b\u306f\u3001\u9001\u4fe1\u5143IP\u30fb\u8a8d\u8a3c\u7d50\u679c\u30fb\u4ef6\u6570\u306a\u3069\u304c\u8a73\u7d30\u306b\u8a18\u9332\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e0d\u6b63\u306a\u9001\u4fe1\u3084\u8a8d\u8a3c\u30df\u30b9\u3092\u65e9\u671f\u306b\u767a\u898b\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><b>DMARC\u30ec\u30dd\u30fc\u30c8\u306e\u6d3b\u7528\u306f\u3001\u7d99\u7d9a\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u3068\u4fe1\u983c\u6027\u5411\u4e0a\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/b><\/p>\n<h2>\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3055\u308c\u306a\u3044\u5de5\u592b<\/h2>\n<p>\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u3089\u308c\u305f\u30e1\u30fc\u30eb\u304cGmail\u3067\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u5b9a\u3055\u308c\u3066\u3057\u307e\u3046\u3068\u3001\u91cd\u8981\u306a\u9023\u7d61\u304c\u898b\u843d\u3068\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002Gmail\u306f\u3001\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3084\u5f62\u5f0f\u3001\u9001\u4fe1\u5143\u60c5\u5831\u306a\u3069\u3092\u7dcf\u5408\u7684\u306b\u5224\u65ad\u3057\u3066\u8ff7\u60d1\u30e1\u30fc\u30eb\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001Gmail\u306b\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u30e1\u30fc\u30eb\u3092\u6b63\u3057\u304f\u5c4a\u3051\u308b\u305f\u3081\u306e\u5177\u4f53\u7684\u306a\u5de5\u592b\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>\u4ef6\u540d\u30fb\u672c\u6587\u306bNG\u30ef\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u304b\uff1f<\/h3>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u65ad\u3055\u308c\u308b\u5927\u304d\u306a\u8981\u56e0\u306e\u3072\u3068\u3064\u304c\u3001\u4ef6\u540d\u3084\u672c\u6587\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u8a00\u8449\u3067\u3059\u3002Gmail\u3067\u306f\u3001\u4e0d\u81ea\u7136\u306a\u8a00\u3044\u56de\u3057\u3084\u904e\u5270\u306a\u5ba3\u4f1d\u8868\u73fe\u304c\u542b\u307e\u308c\u308b\u3068\u3001\u81ea\u52d5\u7684\u306b\u30b9\u30d1\u30e0\u3068\u307f\u306a\u3059\u4ed5\u7d44\u307f\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306e\u3088\u3046\u306a\u30ef\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u300c\u7121\u6599\u300d\u300c\u4eca\u3059\u3050\u300d\u300c\u9650\u5b9a\u300d\u300c\u7a3c\u3052\u308b\u300d\u306a\u3069\u306e\u904e\u5270\u306a\u5ba3\u4f1d\u8a9e<\/li>\n<li>\u82f1\u8a9e\u306e\u8868\u73fe\u3070\u304b\u308a\u306e\u30e1\u30fc\u30eb\uff08\u7279\u306b\u65e5\u672c\u8a9e\u30b5\u30a4\u30c8\u306e\u5834\u5408\uff09<\/li>\n<li>\u300c\uff01\u300d\u3084\u300c\uffe5\u300d\u3092\u591a\u7528\u3057\u305f\u717d\u308a\u6587\u53e5<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306f\u5b9f\u969b\u306b\u8a50\u6b3a\u30e1\u30fc\u30eb\u3084\u8ff7\u60d1\u30e1\u30fc\u30eb\u3067\u591a\u7528\u3055\u308c\u308b\u50be\u5411\u304c\u3042\u308b\u305f\u3081\u3001Gmail\u306e\u30d5\u30a3\u30eb\u30bf\u304c\u53b3\u3057\u304f\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<p><b>\u4fe1\u983c\u3055\u308c\u308b\u6587\u7ae0\u3092\u5fc3\u304c\u3051\u3001\u904e\u6fc0\u306a\u8868\u73fe\u3084\u7591\u308f\u3057\u3044\u30ad\u30fc\u30ef\u30fc\u30c9\u306f\u907f\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/b><\/p>\n<h3>HTML\u30e1\u30fc\u30eb\u3068\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u4f7f\u3044\u5206\u3051<\/h3>\n<p>\u30e1\u30fc\u30eb\u306e\u5f62\u5f0f\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u30e1\u30fc\u30eb\u3067HTML\u5f62\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u904e\u5ea6\u306a\u88c5\u98fe\u3084\u4e0d\u8981\u306a\u30bf\u30b0\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3068\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u307f\u306a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u7279\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306aHTML\u306e\u4f7f\u3044\u65b9\u306f\u907f\u3051\u308b\u3079\u304d\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u753b\u50cf\u306e\u307f\u3067\u69cb\u6210\u3055\u308c\u305f\u30e1\u30fc\u30eb<\/li>\n<li>JavaScript\u3084iframe\u306a\u3069\u306e\u4e0d\u6b63\u5229\u7528\u304c\u7591\u308f\u308c\u308b\u30b3\u30fc\u30c9<\/li>\n<li>\u30d5\u30a9\u30f3\u30c8\u306e\u8272\u3084\u30b5\u30a4\u30ba\u3092\u904e\u5270\u306b\u88c5\u98fe\u3057\u305f\u69cb\u6210<\/li>\n<\/ul>\n<p>\u4e00\u65b9\u3001\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8\u5f62\u5f0f\u3067\u3042\u308c\u3070\u8868\u793a\u304c\u30b7\u30f3\u30d7\u30eb\u306a\u305f\u3081\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5224\u5b9a\u3092\u53d7\u3051\u306b\u304f\u3044\u3068\u3044\u3046\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002\u6700\u3082\u78ba\u5b9f\u306a\u65b9\u6cd5\u306f\u300cHTML\uff0b\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8\u300d\u306e\u30de\u30eb\u30c1\u30d1\u30fc\u30c8\u5f62\u5f0f\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p><b>\u30c7\u30b6\u30a4\u30f3\u3088\u308a\u3082\u5230\u9054\u6027\u3092\u91cd\u8996\u3057\u3001\u53d7\u4fe1\u8005\u304c\u5b89\u5fc3\u3067\u304d\u308b\u69cb\u6210\u3092\u5fc3\u304c\u3051\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/b><\/p>\n<h3>\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u306e\u9001\u4fe1\u5143\u8868\u793a\u3092\u6d3b\u7528\u3059\u308b\u65b9\u6cd5<\/h3>\n<p>\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u30e1\u30fc\u30eb\u306f\u3001\u9001\u4fe1\u5143\uff08From\u30a2\u30c9\u30ec\u30b9\uff09\u306b\u300cexample.com\u300d\u306a\u3069\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u4fe1\u983c\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u9006\u306b\u3001Gmail\u3084Yahoo!\u306a\u3069\u306e\u30d5\u30ea\u30fc\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u5143\u306b\u3059\u308b\u3068\u3001\u306a\u308a\u3059\u307e\u3057\u3068\u8aa4\u89e3\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3046\u969b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ul>\n<li>\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u4f7f\u7528\u3059\u308b\u30c9\u30e1\u30a4\u30f3\u304cSPF\u3001DKIM\u3001DMARC\u3067\u8a8d\u8a3c\u3055\u308c\u3066\u3044\u308b<\/li>\n<li>\u30e1\u30fc\u30eb\u672c\u6587\u306b\u9001\u4fe1\u5143\u60c5\u5831\uff08\u4f1a\u793e\u540d\u3084\u4f4f\u6240\uff09\u3092\u660e\u8a18\u3057\u3066\u3044\u308b<\/li>\n<li>\u9001\u4fe1\u30a2\u30c9\u30ec\u30b9\u3068\u8fd4\u4fe1\u5148\u30a2\u30c9\u30ec\u30b9\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<p>\u3053\u306e\u3088\u3046\u306a\u8a2d\u5b9a\u3092\u884c\u3046\u3053\u3068\u3067\u3001Gmail\u306f\u300c\u6b63\u898f\u306e\u4f1a\u793e\u304b\u3089\u306e\u30e1\u30fc\u30eb\u300d\u3068\u5224\u65ad\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u306a\u308a\u3059\u307e\u3057\u3084\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u306e\u9055\u3044\u304c\u660e\u78ba\u306b\u306a\u308a\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u3078\u306e\u5230\u9054\u7387\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n<p><b>\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3092\u7a4d\u6975\u7684\u306b\u6d3b\u7528\u3057\u3001\u4fe1\u983c\u3055\u308c\u308b\u9001\u4fe1\u8005\u60c5\u5831\u3092\u6574\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/b><\/p>\n<p>h2&gt;Gmail\u306b\u5c4a\u304b\u306a\u3044\u3068\u304d\u306b\u518d\u78ba\u8a8d\u3057\u305f\u3044\u958b\u767a\u30fb\u904b\u7528\u4e0a\u306e\u6ce8\u610f\u70b9<\/p>\n<p>SPF\u3084DKIM\u3001DMARC\u306a\u3069\u306e\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u3066\u3082\u3001\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u30e1\u30fc\u30eb\u304cGmail\u306b\u5c4a\u304b\u306a\u3044\u30b1\u30fc\u30b9\u306f\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5834\u5408\u306f\u3001\u958b\u767a\u5074\u306e\u5b9f\u88c5\u30df\u30b9\u3084\u9001\u4fe1\u65b9\u6cd5\u306e\u554f\u984c\u304c\u539f\u56e0\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002\u30d5\u30a9\u30fc\u30e0\u306e\u51e6\u7406\u65b9\u6cd5\u3084\u30b5\u30fc\u30d0\u30fc\u8a2d\u5b9a\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001\u958b\u767a\u30fb\u904b\u7528\u306e\u8996\u70b9\u304b\u3089\u518d\u78ba\u8a8d\u3059\u3079\u304d3\u3064\u306e\u6280\u8853\u7684\u30dd\u30a4\u30f3\u30c8\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u30d7\u30ed\u30b0\u30e9\u30e0\uff08PHP\/WordPress\uff09\u306e\u8a2d\u5b9a\u78ba\u8a8d<\/h3>\n<p>\u307e\u305a\u78ba\u8a8d\u3059\u3079\u304d\u306f\u3001\u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u51e6\u7406\u305d\u306e\u3082\u306e\u3067\u3059\u3002PHP\u3084WordPress\u3092\u4f7f\u3063\u305f\u5834\u5408\u3001\u521d\u671f\u8a2d\u5b9a\u306e\u307e\u307e\u3060\u3068\u4e0d\u5177\u5408\u304c\u751f\u3058\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u304c\u30b5\u30fc\u30d0\u30fc\u306e\u7ba1\u7406\u7528\u30a2\u30c9\u30ec\u30b9\u306b\u306a\u3063\u3066\u3044\u305f\u308a\u3001\u6539\u884c\u30b3\u30fc\u30c9\u306e\u4e0d\u4e00\u81f4\u3067Gmail\u304c\u30d8\u30c3\u30c0\u30fc\u3092\u8aad\u307f\u53d6\u308c\u306a\u304b\u3063\u305f\u308a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3088\u304f\u3042\u308b\u6ce8\u610f\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>WordPress\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u3067\u300cwp_mail\u300d\u304c\u9069\u5207\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044<\/li>\n<li>\u65e5\u672c\u8a9e\u30e1\u30fc\u30eb\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u304c\u4e0d\u9069\u5207\uff08ISO-2022-JP\u63a8\u5968\uff09<\/li>\n<li>\u30d5\u30a9\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\uff08\u4f8b\u3048\u3070Contact Form 7\uff09\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u53e4\u3044<\/li>\n<\/ul>\n<p>PHP\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u306f\u3001mb_send_mail\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u30a8\u30f3\u30b3\u30fc\u30c9\u3084\u3001\u6587\u5b57\u30b3\u30fc\u30c9\u8a2d\u5b9a\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><b>\u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u69cb\u6210\u30df\u30b9\u306f\u3001Gmail\u5230\u9054\u7387\u3092\u5927\u304d\u304f\u4e0b\u3052\u308b\u8981\u56e0\u3068\u306a\u308b\u305f\u3081\u614e\u91cd\u306b\u898b\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/b><\/p>\n<h3>SMTP\u9001\u4fe1\u3068PHP mail\u95a2\u6570\u306e\u9055\u3044<\/h3>\n<p>PHP\u306b\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u4f7f\u3048\u308b\u300cmail\u95a2\u6570\u300d\u304c\u6a19\u6e96\u3067\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u5230\u9054\u6027\u306e\u89b3\u70b9\u304b\u3089\u306f\u300cSMTP\uff08\u30a8\u30b9\u30a8\u30e0\u30c6\u30a3\u30fc\u30d4\u30fc\uff09\u9001\u4fe1\u300d\u306e\u65b9\u304c\u78ba\u5b9f\u3067\u3059\u3002SMTP\u306f\u30e1\u30fc\u30eb\u3092\u6b63\u5f0f\u306a\u624b\u9806\u3067\u8a8d\u8a3c\u3057\u3066\u9001\u4fe1\u3067\u304d\u308b\u65b9\u5f0f\u3067\u3001Gmail\u3082\u3053\u306e\u65b9\u5f0f\u3092\u9ad8\u304f\u8a55\u4fa1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u9055\u3044\u3092\u6574\u7406\u3059\u308b\u3068\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>\u9805\u76ee<\/th>\n<th>PHP mail\u95a2\u6570<\/th>\n<th>SMTP\u9001\u4fe1<\/th>\n<\/tr>\n<tr>\n<td>\u8a8d\u8a3c<\/td>\n<td>\u306a\u3057<\/td>\n<td>\u3042\u308a\uff08ID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u4fe1\u983c\u6027<\/td>\n<td>\u4f4e\u3044<\/td>\n<td>\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56<\/td>\n<td>\u5f31\u3044<\/td>\n<td>\u5f37\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u9001\u4fe1\u30ed\u30b0<\/td>\n<td>\u57fa\u672c\u306a\u3057<\/td>\n<td>\u30ed\u30b0\u53d6\u5f97\u53ef<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>WordPress\u3067SMTP\u9001\u4fe1\u3092\u884c\u3046\u306b\u306f\u3001\u300cWP Mail SMTP\u300d\u306a\u3069\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u304c\u4fbf\u5229\u3067\u3059\u3002Gmail\u3084\u5916\u90e8SMTP\u3068\u7c21\u5358\u306b\u63a5\u7d9a\u3067\u304d\u307e\u3059\u3002<\/p>\n<p><b>Gmail\u306b\u78ba\u5b9f\u306b\u30e1\u30fc\u30eb\u3092\u5c4a\u3051\u305f\u3044\u306a\u3089\u3001SMTP\u9001\u4fe1\u304c\u5b89\u5168\u304b\u3064\u78ba\u5b9f\u306a\u624b\u6bb5\u3067\u3059\u3002<\/b><\/p>\n<h3>Gmail API\u3084\u5916\u90e8SMTP\uff08SendGrid, Mailgun\u7b49\uff09\u306e\u6d3b\u7528\u3082\u691c\u8a0e\u3092<\/h3>\n<p>\u30d5\u30a9\u30fc\u30e0\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u306b\u4e0d\u5b89\u304c\u3042\u308b\u5834\u5408\u3001Gmail API\u3084\u5916\u90e8SMTP\u30b5\u30fc\u30d3\u30b9\u306e\u6d3b\u7528\u3082\u691c\u8a0e\u3059\u3079\u304d\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u3001\u5927\u91cf\u914d\u4fe1\u3084\u9ad8\u3044\u5230\u9054\u7387\u3092\u524d\u63d0\u3068\u3057\u305f\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u9001\u4fe1\u65b9\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4ee3\u8868\u7684\u306a\u5916\u90e8SMTP\u30b5\u30fc\u30d3\u30b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>SendGrid\uff1a\u5927\u898f\u6a21\u306a\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u6700\u9069\u3002\u7121\u6599\u67a0\u3042\u308a\u3002<\/li>\n<li>Mailgun\uff1a\u958b\u767a\u8005\u5411\u3051\u3067API\u5229\u7528\u304c\u3057\u3084\u3059\u3044\u3002<\/li>\n<li>Amazon SES\uff1a\u30b3\u30b9\u30c8\u304c\u975e\u5e38\u306b\u5b89\u304f\u3001\u5927\u91cf\u9001\u4fe1\u306b\u5f37\u3044\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001SPF\u30fbDKIM\u3082\u81ea\u52d5\u3067\u6574\u5099\u3055\u308c\u3001Gmail\u5074\u306e\u4fe1\u983c\u6027\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u9001\u4fe1\u30ed\u30b0\u3084\u30a8\u30e9\u30fc\u539f\u56e0\u306e\u8a73\u7d30\u304c\u53d6\u5f97\u3067\u304d\u308b\u70b9\u3082\u30e1\u30ea\u30c3\u30c8\u3067\u3059\u3002<\/p>\n<p><b>Gmail\u3078\u306e\u5b89\u5b9a\u3057\u305f\u914d\u4fe1\u3092\u5b9f\u73fe\u3057\u305f\u3044\u306a\u3089\u3001\u5916\u90e8SMTP\u3084Gmail API\u306e\u5c0e\u5165\u304c\u73fe\u5b9f\u7684\u306a\u9078\u629e\u80a2\u3068\u306a\u308a\u307e\u3059\u3002<\/b><\/p>\n<h2>\u3010\u4fdd\u5b58\u7248\u3011\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u304d\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h2>\n<p>\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u30e1\u30fc\u30eb\u304cGmail\u306b\u5c4a\u304b\u306a\u3044\u3068\u304d\u306f\u3001\u8907\u6570\u306e\u8981\u56e0\u304c\u7d61\u307f\u5408\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u3069\u306e\u9805\u76ee\u306b\u554f\u984c\u304c\u3042\u308b\u306e\u304b\u3092\u4e00\u3064\u305a\u3064\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u518d\u767a\u9632\u6b62\u306b\u3082\u5f79\u7acb\u3064\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p><b>\u3053\u306e\u7ae0\u3067\u306f\u3001Gmail\u306b\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3001\u6539\u5584\u3059\u308b\u305f\u3081\u306e\u91cd\u8981\u306a4\u3064\u306e\u30c1\u30a7\u30c3\u30af\u9805\u76ee\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/b><\/p>\n<h3>DNS\u30ec\u30b3\u30fc\u30c9\u78ba\u8a8d\uff08SPF\u30fbDKIM\u30fbDMARC\uff09<\/h3>\n<p>\u6700\u3082\u512a\u5148\u3057\u3066\u78ba\u8a8d\u3059\u3079\u304d\u306a\u306e\u304c\u3001DNS\u306b\u767b\u9332\u3055\u308c\u305fSPF\u30fbDKIM\u30fbDMARC\u306e3\u3064\u306e\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002\u3053\u308c\u3089\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u3001Gmail\u306f\u9001\u4fe1\u5143\u3092\u4fe1\u983c\u3067\u304d\u306a\u3044\u3068\u5224\u65ad\u3057\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u51e6\u7406\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30c1\u30a7\u30c3\u30af\u3059\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>SPF\u30ec\u30b3\u30fc\u30c9\uff1a\u9001\u4fe1\u30b5\u30fc\u30d0\u30fc\u306eIP\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u304b<\/li>\n<li>DKIM\u30ec\u30b3\u30fc\u30c9\uff1a\u516c\u958b\u9375\u304c\u6b63\u3057\u3044\u5f62\u5f0f\u3067\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<li>DMARC\u30ec\u30b3\u30fc\u30c9\uff1a\u9069\u5207\u306a\u30dd\u30ea\u30b7\u30fc\u3068\u30ec\u30dd\u30fc\u30c8\u53d7\u4fe1\u5148\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n<p>SPF\u3084DKIM\u304c\u672a\u8a2d\u5b9a\u3001\u3042\u308b\u3044\u306f\u8aa4\u8a2d\u5b9a\u306e\u5834\u5408\u3001DMARC\u304c\u62d2\u5426\u30dd\u30ea\u30b7\u30fc\u3068\u306a\u3063\u3066\u3044\u308b\u3068Gmail\u306f\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3089\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><b>DNS\u30ec\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\u3068\u4fee\u6b63\u306f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u5b89\u5b9a\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u6700\u512a\u5148\u4e8b\u9805\u3067\u3059\u3002<\/b><\/p>\n<h3>\u30b5\u30fc\u30d0\u30fc\u30ed\u30b0\u78ba\u8a8d<\/h3>\n<p>\u30e1\u30fc\u30eb\u9001\u4fe1\u5f8c\u3001Gmail\u306b\u5c4a\u3044\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30ed\u30b0\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3067\u539f\u56e0\u304c\u5224\u660e\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306bSMTP\u30ed\u30b0\u3084\u30a8\u30e9\u30fc\u30ed\u30b0\u306b\u306f\u8cb4\u91cd\u306a\u60c5\u5831\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e3b\u306b\u78ba\u8a8d\u3059\u3079\u304d\u30ed\u30b0\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>SMTP\u30ed\u30b0\uff08postfix\/sendmail\u306a\u3069\uff09<\/li>\n<li>Web\u30b5\u30fc\u30d0\u30fc\u306e\u30a8\u30e9\u30fc\u30ed\u30b0\uff08Apache\/nginx\uff09<\/li>\n<li>WordPress\u306e\u5834\u5408\u306f\u300cWP Mail Logging\u300d\u306a\u3069\u306e\u30d7\u30e9\u30b0\u30a4\u30f3<\/li>\n<\/ul>\n<p>\u30ed\u30b0\u306b\u306f\u3001\u63a5\u7d9a\u5931\u6557\u3084\u8a8d\u8a3c\u30a8\u30e9\u30fc\u3001\u62d2\u5426\u7406\u7531\u306a\u3069\u304c\u8a18\u9332\u3055\u308c\u3066\u304a\u308a\u3001\u539f\u56e0\u7279\u5b9a\u306b\u975e\u5e38\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p><b>\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u304d\u306f\u3001\u5fc5\u305a\u30b5\u30fc\u30d0\u30fc\u30ed\u30b0\u3092\u78ba\u8a8d\u3057\u3001\u6280\u8853\u7684\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3066\u3044\u306a\u3044\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/b><\/p>\n<h3>\u30d5\u30a9\u30fc\u30e0\u8a2d\u5b9a\u30fb\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u306e\u898b\u76f4\u3057<\/h3>\n<p>\u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u8a2d\u5b9a\u304c\u4e0d\u9069\u5207\u3060\u3068\u3001\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\u304c\u6b63\u3057\u304f\u751f\u6210\u3055\u308c\u305a\u3001Gmail\u5074\u3067\u62d2\u5426\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306b\u300cFrom\u300d\u3084\u300cReturn-Path\u300d\u306e\u8a2d\u5b9a\u306b\u4e0d\u6574\u5408\u304c\u3042\u308b\u3068\u3001\u306a\u308a\u3059\u307e\u3057\u3068\u5224\u5b9a\u3055\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u898b\u76f4\u3059\u3079\u304d\u8a2d\u5b9a\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u9001\u4fe1\u5143\u30a2\u30c9\u30ec\u30b9\u304c\u81ea\u793e\u30c9\u30e1\u30a4\u30f3\u3067\u7d71\u4e00\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<li>\u300cFrom\u300d\u3068\u300cReturn-Path\u300d\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b<\/li>\n<li>\u4ef6\u540d\u30fb\u672c\u6587\u306e\u5f62\u5f0f\u306b\u4e0d\u81ea\u7136\u306a\u8a18\u8ff0\u304c\u306a\u3044\u304b<\/li>\n<\/ul>\n<p>\u30d5\u30a9\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u66f4\u65b0\u3084\u3001\u30c6\u30fc\u30de\u30fb\u30d7\u30e9\u30b0\u30a4\u30f3\u3068\u306e\u76f8\u6027\u3082\u30c1\u30a7\u30c3\u30af\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p><b>\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u306f\u76ee\u306b\u898b\u3048\u306a\u3044\u90e8\u5206\u306b\u843d\u3068\u3057\u7a74\u304c\u591a\u3044\u305f\u3081\u3001\u8a2d\u8a08\u6642\u304b\u3089\u9001\u4fe1\u5143\u60c5\u5831\u306e\u6574\u5408\u6027\u3092\u610f\u8b58\u3057\u307e\u3057\u3087\u3046\u3002<\/b><\/p>\n<h3>Gmail\u5074\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u78ba\u8a8d<\/h3>\n<p>\u6700\u5f8c\u306b\u78ba\u8a8d\u3059\u3079\u304d\u306a\u306e\u304c\u3001Gmail\u81ea\u4f53\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u8a2d\u5b9a\u3067\u3059\u3002\u305f\u3068\u3048\u8a2d\u5b9a\u3084\u9001\u4fe1\u5f62\u5f0f\u304c\u6b63\u3057\u304f\u3066\u3082\u3001Gmail\u304c\u5185\u5bb9\u3092\u300c\u8ff7\u60d1\u300d\u3068\u5224\u65ad\u3059\u308c\u3070\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u306f\u5c4a\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>Gmail\u3067\u30c1\u30a7\u30c3\u30af\u3059\u3079\u304d\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u3066\u3044\u306a\u3044\u304b<\/li>\n<li>\u30d5\u30a3\u30eb\u30bf\u30fc\u8a2d\u5b9a\u3067\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u306a\u3044\u304b<\/li>\n<li>\u53d7\u4fe1\u30c8\u30ec\u30a4\u306e\u5bb9\u91cf\u304c\u4e0a\u9650\u306b\u9054\u3057\u3066\u3044\u306a\u3044\u304b<\/li>\n<\/ul>\n<p>\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3044\u305f\u5834\u5408\u3001\u300c\u8ff7\u60d1\u30e1\u30fc\u30eb\u3067\u306a\u3044\u300d\u3068\u30de\u30fc\u30af\u3059\u308b\u3053\u3068\u3067\u3001\u6b21\u56de\u4ee5\u964d\u306f\u6b63\u3057\u304f\u53d7\u4fe1\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n<p><b>Gmail\u5074\u306e\u8a2d\u5b9a\u3084\u52d5\u4f5c\u3082\u7591\u3044\u3001\u5b9f\u969b\u306e\u53d7\u4fe1\u72b6\u6cc1\u3092\u76ee\u8996\u3067\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/b><\/p>\n<h2>\u3088\u304f\u3042\u308b\u8cea\u554f\u3068\u518d\u691c\u7d22\u3055\u308c\u304c\u3061\u306a\u30ad\u30fc\u30ef\u30fc\u30c9<\/h2>\n<p>Gmail\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u554f\u984c\u306f\u3001\u975e\u5e38\u306b\u591a\u304f\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u76f4\u9762\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30cd\u30c3\u30c8\u4e0a\u3067\u306f\u3055\u307e\u3056\u307e\u306a\u95a2\u9023\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u518d\u691c\u7d22\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u5b9f\u969b\u306b\u3088\u304f\u3042\u308b\u8cea\u554f\u3068\u518d\u691c\u7d22\u3055\u308c\u308b\u5185\u5bb9\u306b\u3064\u3044\u3066\u3001Q&amp;A\u5f62\u5f0f\u3067\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n<p><b>\u672c\u7ae0\u3092\u8aad\u3080\u3053\u3068\u3067\u3001\u8aad\u8005\u304c\u62b1\u3048\u308b\u7591\u554f\u3084\u518d\u691c\u7d22\u884c\u52d5\u3092\u672a\u7136\u306b\u89e3\u6d88\u3067\u304d\u307e\u3059\u3002<\/b><\/p>\n<h3>Gmail \u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u308b\u6761\u4ef6\u306f\uff1f<\/h3>\n<p>Gmail\u3067\u306f\u3001AI\u304c\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3084\u69cb\u6210\u3092\u5206\u6790\u3057\u3001\u81ea\u52d5\u7684\u306b\u8ff7\u60d1\u30e1\u30fc\u30eb\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3066\u3044\u307e\u3059\u3002\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u5224\u65ad\u3055\u308c\u308b\u4e3b\u306a\u6761\u4ef6\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u9001\u4fe1\u5143\u304c\u4fe1\u983c\u3067\u304d\u306a\u3044\u30c9\u30e1\u30a4\u30f3\u3067\u3042\u308b<\/li>\n<li>SPF\u3084DKIM\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u3066\u3044\u308b<\/li>\n<li>\u4ef6\u540d\u3084\u672c\u6587\u306b\u30b9\u30d1\u30e0\u7684\u306a\u8868\u73fe\u304c\u3042\u308b<\/li>\n<li>\u904e\u53bb\u306b\u540c\u4e00\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30b9\u30d1\u30e0\u304c\u591a\u304f\u9001\u3089\u308c\u3066\u3044\u305f<\/li>\n<li>\u53d7\u4fe1\u8005\u304c\u624b\u52d5\u3067\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5206\u985e\u3057\u305f\u5c65\u6b74\u304c\u3042\u308b<\/li>\n<\/ul>\n<p>Gmail\u306f\u3053\u308c\u3089\u306e\u8981\u7d20\u3092\u7dcf\u5408\u7684\u306b\u8a55\u4fa1\u3057\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3057\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3067\u3042\u3063\u3066\u3082\u300c\u5185\u5bb9\u300d\u3084\u300c\u904e\u53bb\u306e\u8a55\u4fa1\u300d\u306b\u3088\u3063\u3066\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u8ff7\u60d1\u30e1\u30fc\u30eb\u306b\u5165\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u306b\u306f\u3001\u5185\u5bb9\u306e\u898b\u76f4\u3057\u3068\u9001\u4fe1\u5143\u306e\u4fe1\u983c\u6027\u5f37\u5316\u304c\u5fc5\u8981\u3067\u3059\u3002<\/b><\/p>\n<h3>\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u306e\u30c6\u30b9\u30c8\u9001\u4fe1\u3067\u5c4a\u304f\u306e\u306b\u3001\u672c\u756a\u3067\u5c4a\u304b\u306a\u3044\u7406\u7531\u306f\uff1f<\/h3>\n<p>\u30d5\u30a9\u30fc\u30e0\u306e\u30c6\u30b9\u30c8\u9001\u4fe1\u3067\u306f\u554f\u984c\u306a\u304f\u5c4a\u3044\u305f\u306e\u306b\u3001\u672c\u756a\u74b0\u5883\u3067\u306f\u5c4a\u304b\u306a\u3044\u3068\u3044\u3046\u30b1\u30fc\u30b9\u3082\u3088\u304f\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u4e3b\u306a\u7406\u7531\u306f\u3001\u9001\u4fe1\u6761\u4ef6\u306e\u9055\u3044\u306b\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3088\u304f\u3042\u308b\u5dee\u7570\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li>\u30c6\u30b9\u30c8\u6642\u3068\u672c\u756a\u6642\u3067\u9001\u4fe1\u30a2\u30c9\u30ec\u30b9\u304c\u7570\u306a\u308b<\/li>\n<li>\u30c6\u30b9\u30c8\u306f1\u901a\u3001\u672c\u756a\u306f\u5927\u91cf\u9001\u4fe1\u3068\u306a\u3063\u3066\u304a\u308a\u30b9\u30d1\u30e0\u5224\u5b9a\u3055\u308c\u3084\u3059\u3044<\/li>\n<li>\u672c\u756a\u3067\u306f\u4ed6\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u3084\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u5f71\u97ff\u3057\u3066\u3044\u308b<\/li>\n<\/ul>\n<p>\u307e\u305f\u3001\u9001\u4fe1\u5148\u306eGmail\u30a2\u30c9\u30ec\u30b9\u304c\u4ee5\u524d\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3057\u305f\u5c65\u6b74\u304c\u3042\u308b\u3068\u3001\u540c\u3058\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u672c\u756a\u30e1\u30fc\u30eb\u3082\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><b>\u30c6\u30b9\u30c8\u9001\u4fe1\u3068\u672c\u756a\u9001\u4fe1\u3067\u6761\u4ef6\u304c\u9055\u3063\u3066\u3044\u306a\u3044\u304b\u3092\u7d30\u304b\u304f\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/b><\/p>\n<h3>\u300cSPF softfail\u300d\u300cDKIM fail\u300d\u3068\u8868\u793a\u3055\u308c\u305f\u3068\u304d\u306e\u5bfe\u51e6\u6cd5\u306f\uff1f<\/h3>\n<p>Gmail\u3067\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u3092\u78ba\u8a8d\u3057\u305f\u3068\u304d\u306b\u300cSPF softfail\u300d\u3084\u300cDKIM fail\u300d\u3068\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u8a8d\u8a3c\u30a8\u30e9\u30fc\u3092\u610f\u5473\u3057\u3066\u304a\u308a\u3001\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u304c\u4f4e\u4e0b\u3057\u3066\u3044\u308b\u72b6\u614b\u3067\u3059\u3002<\/p>\n<p>\u305d\u308c\u305e\u308c\u306e\u610f\u5473\u3068\u5bfe\u51e6\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<table border=\"1\">\n<tbody>\n<tr>\n<th>\u8868\u793a\u5185\u5bb9<\/th>\n<th>\u610f\u5473<\/th>\n<th>\u5bfe\u51e6\u6cd5<\/th>\n<\/tr>\n<tr>\n<td>SPF softfail<\/td>\n<td>SPF\u306b\u4e00\u81f4\u3057\u306a\u3044\u304c\u3001\u5b8c\u5168\u62d2\u5426\u306f\u3057\u306a\u3044<\/td>\n<td>SPF\u30ec\u30b3\u30fc\u30c9\u306b\u9001\u4fe1IP\u3092\u8ffd\u52a0<\/td>\n<\/tr>\n<tr>\n<td>DKIM fail<\/td>\n<td>DKIM\u7f72\u540d\u304c\u7121\u52b9\u307e\u305f\u306f\u4e00\u81f4\u3057\u3066\u3044\u306a\u3044<\/td>\n<td>\u516c\u958b\u9375\u304c\u6b63\u3057\u3044\u304b\u3001\u7f72\u540d\u65b9\u5f0f\u304c\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b\u78ba\u8a8d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u7279\u306b\u300cfail\u300d\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u306f\u3001Gmail\u5074\u3067\u306a\u308a\u3059\u307e\u3057\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u5224\u65ad\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u653e\u7f6e\u3059\u308b\u3068\u53d7\u4fe1\u62d2\u5426\u3084\u8ff7\u60d1\u30e1\u30fc\u30eb\u884c\u304d\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p><b>SPF\u30fbDKIM\u306e\u30a8\u30e9\u30fc\u306fGmail\u914d\u4fe1\u306e\u91cd\u5927\u306a\u969c\u5bb3\u8981\u56e0\u3067\u3042\u308a\u3001\u5fc5\u305a\u4fee\u6b63\u3059\u3079\u304d\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/b><\/p>\n<h2>\u307e\u3068\u3081\uff5cGmail\u306b\u5c4a\u304b\u306a\u3044\u30d5\u30a9\u30fc\u30e0\u30e1\u30fc\u30eb\u306f\u6280\u8853\u3068\u8a2d\u5b9a\u306e\u898b\u76f4\u3057\u3067\u6539\u5584\u3067\u304d\u308b<\/h2>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u300cWEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089Gmail\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u304d\u306e\u5bfe\u51e6\u6cd5\u300d\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3057\u305f\u3002\u539f\u56e0\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u306e\u5224\u5b9a\u30fbSPF\/DKIM\/DMARC\u306e\u4e0d\u5099\u30fb\u30d5\u30a9\u30fc\u30e0\u306e\u5b9f\u88c5\u30df\u30b9\u30fbGmail\u306e\u4ed5\u69d8\u306a\u3069\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u672c\u6587\u3067\u306f\u3001\u9001\u4fe1\u8a2d\u5b9a\u3084DNS\u30ec\u30b3\u30fc\u30c9\u306e\u8a18\u8ff0\u65b9\u6cd5\u3001SMTP\u9001\u4fe1\u306e\u6d3b\u7528\u3001\u9001\u4fe1\u30ed\u30b0\u306e\u78ba\u8a8d\u65b9\u6cd5\u307e\u3067\u5e45\u5e83\u304f\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u72b6\u6cc1\u306f\u3001\u653e\u7f6e\u3059\u308b\u3068\u4fe1\u983c\u640d\u5931\u3084\u6a5f\u4f1a\u640d\u5931\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u306f\u4eca\u56de\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u3082\u3068\u306b\u3001\u8a2d\u5b9a\u3084\u30ed\u30b0\u3092\u4e00\u3064\u305a\u3064\u4e01\u5be7\u306b\u898b\u76f4\u3057\u3001\u6b63\u3057\u3044\u30e1\u30fc\u30eb\u914d\u4fe1\u74b0\u5883\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u300cWEB\u30b5\u30a4\u30c8\u306e\u30e1\u30fc\u30eb\u30d5\u30a9\u30fc\u30e0\u304b\u3089Gmail\u306b\u30e1\u30fc\u30eb<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":7321,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40],"tags":[],"class_list":["post-1258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solution"],"_links":{"self":[{"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/posts\/1258"}],"collection":[{"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/comments?post=1258"}],"version-history":[{"count":4,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/posts\/1258\/revisions"}],"predecessor-version":[{"id":7322,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/posts\/1258\/revisions\/7322"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/media\/7321"}],"wp:attachment":[{"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/media?parent=1258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/categories?post=1258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/first-create.com\/wp-json\/wp\/v2\/tags?post=1258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}