{"id":11917,"date":"2025-08-06T08:36:20","date_gmt":"2025-08-06T06:36:20","guid":{"rendered":"https:\/\/webhosting.de\/smtp-relay-konfigurieren-massenmails-risiken-alternativen-power\/"},"modified":"2025-08-06T08:36:20","modified_gmt":"2025-08-06T06:36:20","slug":"smtp%e3%83%aa%e3%83%ac%e3%83%bc%e8%a8%ad%e5%ae%9a%e3%83%90%e3%83%ab%e3%82%af%e3%83%a1%e3%83%bc%e3%83%ab%e3%83%aa%e3%82%b9%e3%82%af%e4%bb%a3%e6%9b%bf%e9%9b%bb%e6%ba%90","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/smtp-relay-konfigurieren-massenmails-risiken-alternativen-power\/","title":{"rendered":"\u5927\u91cf\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u305f\u3081\u306eSMTP\u30ea\u30ec\u30fc\u306e\u8a2d\u5b9a - \u30ea\u30b9\u30af\u3001\u5b9f\u8df5\u3001\u4ee3\u66ff\u6848"},"content":{"rendered":"<p>A <strong>SMTP\u30ea\u30ec\u30fc<\/strong> \u306f\u3001\u5927\u91cf\u306e\u30e1\u30fc\u30eb\u3092\u69cb\u9020\u7684\u306b\u9001\u4fe1\u3059\u308b\u305f\u3081\u306b\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306b\u52a0\u3048\u3001\u914d\u4fe1\u53ef\u80fd\u6027\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u3001\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u5236\u9650\u306f\u3001\u5927\u91cf\u306e\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u969b\u306e\u91cd\u8981\u306a\u8981\u7d20\u306e\u3072\u3068\u3064\u3067\u3059\u3002<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<ul>\n  <li><strong>SMTP\u30ea\u30ec\u30fc<\/strong> \u304a\u5ba2\u69d8\u306e\u30b5\u30fc\u30d0\u30fc\u30a4\u30f3\u30d5\u30e9\u3092\u4fdd\u8b77\u3057\u3001\u4fe1\u983c\u3067\u304d\u308b\u9001\u4fe1\u8005\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n  <li>\u30c6\u30af\u30cb\u30ab\u30eb <strong>\u5bb6\u5177<\/strong> \u8a8d\u8a3c\u3001DNS\u8a2d\u5b9a\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u304c\u5fc5\u8981<\/li>\n  <li><strong>\u30ea\u30b9\u30af<\/strong> \u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u3084\u30af\u30a9\u30fc\u30bf\u9055\u53cd\u306f\u3001\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306b\u3088\u3063\u3066\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/li>\n  <li><strong>\u4ee3\u66ff\u6848<\/strong> \u30af\u30e9\u30a6\u30c9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3084\u5c02\u7528\u30b5\u30fc\u30d0\u30fc\u306b\u306f\u3001\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u9577\u6240\u3068\u77ed\u6240\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n  <li>A <strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u51fa\u8377\u306e\u54c1\u8cea\u3092\u78ba\u4fdd\u3057\u3001\u30a8\u30e9\u30fc\u3092\u65e9\u671f\u306b\u767a\u898b\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u306e\u51fa\u8377\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/smtp-relay-3421.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5927\u91cf\u30e1\u30fc\u30eb\u9001\u4fe1\u306bSMTP\u30ea\u30ec\u30fc\u304c\u4e0d\u53ef\u6b20\u306a\u7406\u7531<\/h2>\n<p>A <strong>SMTP\u30ea\u30ec\u30fc<\/strong> \u306f\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30e1\u30fc\u30eb\u306e\u8ee2\u9001\u3092\u4ef2\u4ecb\u3057\u307e\u3059\u3002IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4fdd\u8b77\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u78ba\u5b9f\u306a\u914d\u4fe1\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u4e3b\u8981\u306a\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u904e\u53bb\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u8a8d\u8a3c\u3001\u304a\u3088\u3073\u9001\u4fe1\u884c\u52d5\u306b\u5f93\u3063\u3066\u9001\u4fe1\u8005\u3092\u8a55\u4fa1\u3057\u307e\u3059\u3002\u30ea\u30ec\u30fc\u3092\u4ecb\u3055\u305a\u306b\u30e1\u30a4\u30f3\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u76f4\u63a5\u5927\u91cf\u306e\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001\u8fc5\u901f\u306a\u30d6\u30ed\u30c3\u30af\u3084\u914d\u4fe1\u9045\u5ef6\u306e\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u30ea\u30b9\u30af\u306f\u3001\u30e1\u30fc\u30eb\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3001\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3001\u30b7\u30b9\u30c6\u30e0\u901a\u77e5\u306b\u7279\u306b\u95a2\u9023\u3057\u307e\u3059\u3002<\/p>\n<p>SPF\u3001DKIM\u3001DMARC\u306a\u3069\u306e\u30c9\u30e1\u30a4\u30f3\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u304a\u3088\u3073\u8a8d\u8a3c\u6a19\u6e96\u3082\u53d7\u4fe1\u7387\u306b\u76f4\u63a5\u5f71\u97ff\u3057\u307e\u3059\u3002\u30af\u30ea\u30fc\u30f3\u306aSMTP\u30ea\u30ec\u30fc\u69cb\u6210\u306f\u3001\u3053\u308c\u3089\u306e\u30b7\u30b0\u30ca\u30eb\u3092\u6b63\u3057\u304f\u9001\u4fe1\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059 - \u3064\u307e\u308a\u3001\u6975\u7aef\u306a\u9001\u4fe1\u91cf\u3067\u3082\u6c38\u4e45\u7684\u306a\u62d2\u5426\u304c\u767a\u751f\u3057\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001\u591a\u304f\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u306f\u3001\u9577\u671f\u7684\u306b\u9001\u4fe1\u8005\u306e\u884c\u52d5\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306b\u3001\u6d17\u7df4\u3055\u308c\u305f\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u304a\u3088\u3073\u30b9\u30b3\u30a2\u30ea\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3002SMTP\u30ea\u30ec\u30fc\u306f\u3001\u7a81\u7136\u306e\u9001\u4fe1\u30d4\u30fc\u30af\u306e\u7d50\u679c\u3068\u3057\u3066\u8a55\u5224\u304c\u843d\u3061\u306a\u3044\u3088\u3046\u306b\u3001\u7684\u3092\u7d5e\u3063\u305f\u65b9\u6cd5\u3067\u3053\u3053\u306b\u4ecb\u5165\u3057\u3001\u8ca0\u8377\u30d4\u30fc\u30af\u3092\u7de9\u548c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3053\u306e\u5074\u9762\u306f\u3001e\u30b3\u30de\u30fc\u30b9\u3067\u3088\u304f\u3042\u308b\u3088\u3046\u306b\u3001\u5b63\u7bc0\u7684\u306a\u30e1\u30fc\u30ea\u30f3\u30b0\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3067\u306f\u7279\u306b\u91cd\u8981\u3067\u3042\u308b\u3002\u30ec\u30fc\u30c8\u5236\u9650\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u7d71\u5408\u3055\u308c\u305fSMTP\u30ea\u30ec\u30fc\u306f\u3001\u3053\u306e\u8ca0\u8377\u3092\u5de7\u307f\u306b\u5206\u6563\u3057\u3001Microsoft 365\u3001Gmail\u3001GMX\u306a\u3069\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3067DE\u30ea\u30b9\u30c8\u306e\u30ea\u30b9\u30af\u3092\u9632\u304e\u307e\u3059\u3002<\/p>\n<p>\u5927\u91cf\u30e1\u30fc\u30eb\u3092\u5c02\u9580\u7684\u306b\u8a2d\u8a08\u3059\u308b\u305f\u3081\u306b\u306f\u3001IP\u30a6\u30a9\u30fc\u30df\u30f3\u30b0\u3092\u6bb5\u968e\u7684\u306b\u884c\u3046\u3053\u3068\u3082\u671b\u307e\u3057\u3044\u3002\u3053\u308c\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u3042\u306a\u305f\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u4fe1\u983c\u3067\u304d\u308b\u3082\u306e\u3068\u3057\u3066\u5206\u985e\u3059\u308b\u6642\u9593\u304c\u3042\u308b\u3088\u3046\u306b\u3001\u9001\u4fe1\u91cf\u3092\u3086\u3063\u304f\u308a\u3068\u3057\u304b\u5897\u3084\u3055\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3002SMTP\u30ea\u30ec\u30fc\u3092\u4f7f\u7528\u3057\u306a\u3044\u5834\u5408\u3001\u3059\u3079\u3066\u306e\u8a2d\u5b9a\u3068\u9001\u4fe1\u30d5\u30ed\u30fc\u3092\u81ea\u5206\u3067\u7ba1\u7406\u30fb\u76e3\u8996\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u305f\u3081\u3001\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3088\u308a\u8907\u96d1\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n\n<h2>SMTP \u30ea\u30ec\u30fc\u3092\u8a2d\u5b9a\u3059\u308b\u306b\u306f<\/h2>\n<p>\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3001\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u3088\u3063\u3066\u3001\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u57fa\u672c\u7684\u306b\u306f\u30013\u3064\u306e\u4e3b\u8981\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u304b\u3089\u69cb\u6210\u3055\u308c\u307e\u3059\uff1a\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306e\u9078\u629e\u3001\u6280\u8853\u7684\u306a\u63a5\u7d9a\u3001\u9001\u4fe1\u30c6\u30b9\u30c8\u3067\u3059\u3002Postfix\u3001Sendmail\u3001Exchange\u306e\u3088\u3046\u306a\u4e00\u822c\u7684\u306a\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<ul>\n  <li>\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u30fb\u30d5\u30a1\u30a4\u30eb\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\uff08\u4f8b <code>\/etc\/postfix\/main.cf<\/code> \u6216\u3044\u306f <code>\/etc\/mail\/sendmail.mc<\/code>)<\/li>\n  <li>\u30ea\u30ec\u30fc\u30db\u30b9\u30c8\u306e\u30a8\u30f3\u30c8\u30ea\u30fc - \u4f8b <code>smtp-relay.gmail.com<\/code> \u307e\u305f\u306f\u30d7\u30ed\u30d0\u30a4\u30c0\u306eIP\u30a2\u30c9\u30ec\u30b9<\/li>\n  <li>\u30e6\u30fc\u30b6\u30fc\u540d\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u3088\u308bSMTP\u30a2\u30af\u30bb\u30b9\u30c7\u30fc\u30bf\u306e\u4fdd\u5b58<\/li>\n  <li>\u9069\u5207\u306a\u30dd\u30fc\u30c8\u306e\u5b9a\u7fa9\uff08\u901a\u5e38\u3001TLS\/SSL\u3067\u306f25\u3001465\u3001587\uff09\u3002<\/li>\n  <li>\u5909\u66f4\u3092\u8aad\u307f\u8fbc\u3080\u305f\u3081\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u518d\u8d77\u52d5\u3059\u308b\u3002<\/li>\n<\/ul>\n\n<p>\u30bb\u30f3\u30c9\u30e1\u30fc\u30eb\u306e\u8a2d\u5b9a\u306f\u82e5\u5e72\u7570\u306a\u308b\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001SSH\u7d4c\u7531\u3067\u30b5\u30fc\u30d0\u30fc\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002 <code>\u30b9\u30de\u30fc\u30c8\u30db\u30b9\u30c8<\/code> \u5916\u90e8SMTP\u30ea\u30ec\u30fc\u3092\u518d\u751f\u6210\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u3092\u518d\u8d77\u52d5\u3057\u3066\u304b\u3089\u3001\u30c6\u30b9\u30c8\u30fb\u30e1\u30fc\u30eb\u3067\u30b5\u30af\u30bb\u30b9\u30fb\u30c1\u30a7\u30fc\u30f3\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/p>\n<p>\u7528\u9014 <a href=\"https:\/\/webhosting.de\/ja\/gmail-smtp-in-l-google-com-%e3%81%ae%e3%81%9f%e3%82%81%e3%81%ae-postfix-certificat-verification-%e3%81%ae%e5%a4%b1%e6%95%97\/\">Postfix\u8a2d\u5b9a\u306e\u8a73\u7d30\u30d8\u30eb\u30d7<\/a>\u5178\u578b\u7684\u306a\u30a8\u30e9\u30fc\u3092\u76f4\u63a5\u9664\u5916\u3059\u308b\u305f\u3081\u306b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/smtp-relay-besprechung-1234.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>TLS 1.2\u30841.3\u306e\u3088\u3046\u306a\u6700\u65b0\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u6a19\u6e96\u304c\u5229\u7528\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u304c\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002 \u30ea\u30ec\u30fc\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u6700\u65b0\u306e\u6697\u53f7\u5316\u65b9\u5f0f\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3001\u30e1\u30fc\u30eb\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u6a5f\u5bc6\u6027\u3092\u78ba\u4fdd\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u7a81\u7136\u306e\u5207\u65ad\u3084\u4e0d\u6b63\u78ba\u306a\u8a8d\u8a3c\u306e\u591a\u3055\u306a\u3069\u306e\u7570\u5e38\u4e8b\u614b\u3092\u8a8d\u8b58\u3059\u308b\u305f\u3081\u306b\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3053\u3068\u3082\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u9069\u5207\u306a\u5206\u6790\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u96c6\u4e2d\u7684\u306b\u30ed\u30b0\u3092\u8a18\u9332\u3059\u308b\u3053\u3068\u306f\u3001\u751f\u7523\u7684\u306a\u4f7f\u7528\u306b\u304a\u3044\u3066\u7279\u306b\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3084\u8a2d\u5b9a\u30a8\u30e9\u30fc\u3092\u65e9\u671f\u306b\u7279\u5b9a\u3057\u3001\u4fee\u6b63\u3059\u308b\u3053\u3068\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<h2>SMTP\u30ea\u30ec\u30fc\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u914d\u4fe1\u6027<\/h2>\n<p>\u512a\u308c\u305f\u8a2d\u5b9a\u3060\u3051\u3067\u306f\u5341\u5206\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002SMTP\u30ea\u30ec\u30fc\u306b\u95a2\u3057\u3066\u306f\u3001\u30e1\u30fc\u30eb\u304c\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u306b\u7d1b\u308c\u8fbc\u307e\u306a\u3044\u3088\u3046\u3001\u660e\u78ba\u306a\u6280\u8853\u539f\u5247\u306b\u983c\u308b\u3053\u3068\u3002\u3053\u308c\u306b\u306f\u3001DNS\u8a8d\u8a3c\u3084\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30c1\u30e3\u30f3\u30cd\u30eb\u3060\u3051\u3067\u306a\u304f\u3001\u72ec\u81ea\u306e\u5c02\u7528IP\u3082\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306e\u63aa\u7f6e\u304c\u6709\u52b9\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\uff1a<\/p>\n\n<p>\n<strong>SPF<\/strong>\u30c9\u30e1\u30a4\u30f3\u306e\u8a8d\u8a3c\u6e08\u307f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u5b9a\u7fa9\u3059\u308b<br>\n<strong>\u30c7\u30a3\u30fc\u30b1\u30fc\u30a2\u30a4\u30a8\u30e0<\/strong>\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u3066\u7f72\u540d\u3059\u308b<br>\n<strong>\uff24\uff2d\uff21\uff32\uff23<\/strong>SPF\/DKIM\u306e\u65bd\u884c\u898f\u5247\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\n<\/p>\n\n<p>\u8a8d\u8a3c\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306a\u5b9f\u8df5\u30ac\u30a4\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u8a18\u4e8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e9%9b%bb%e5%ad%90%e3%83%a1%e3%83%bc%e3%83%ab%e8%aa%8d%e8%a8%bc-spf-dkim-dmarc-%e3%82%ac%e3%82%a4%e3%83%89\/\">SFP\u3001DKIM\u3001DMARC<\/a>.<\/p>\n<p>\u914d\u4fe1\u30ec\u30fc\u30c8\u3092\u3055\u3089\u306b\u6700\u9069\u5316\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u76ee\u7684\u5225\u306b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u3082\u691c\u8a0e\u3067\u304d\u307e\u3059\uff08\u305f\u3068\u3048\u3070\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff09\u3002 <em>\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc.my-domain.com<\/em> \u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30fb\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3084 <em>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30fb\u30de\u30a4\u30c9\u30e1\u30a4\u30f3\u30fb\u30c9\u30c3\u30c8\u30b3\u30e0<\/em> \u8acb\u6c42\u66f8\u3068\u30b7\u30b9\u30c6\u30e0\u901a\u77e5\u7528\uff09\u306b\u5206\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u4f8b\u3048\u3070\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u304c\u6025\u306a\u914d\u4fe1\u505c\u6b62\u306b\u3064\u306a\u304c\u3063\u305f\u5834\u5408\u3067\u3082\u3001\u7570\u306a\u308b\u9001\u4fe1\u8005\u306e\u8a55\u5224\u3092\u7ba1\u7406\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306a\u5206\u96e2\u6280\u8853\u306b\u3088\u308a\u3001\u91cd\u8981\u306a\u30b7\u30b9\u30c6\u30e0\u30fb\u30e1\u30fc\u30eb\u304c\u30b9\u30d1\u30e0\u306e\u7591\u3044\u3092\u304b\u3051\u3089\u308c\u308b\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<p>\u81ea\u52d5\u5316\u3055\u308c\u305f\u30d0\u30a6\u30f3\u30b9\u7ba1\u7406\u30d7\u30ed\u30bb\u30b9\u3082\u3001\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306aSMTP\u30ea\u30ec\u30fc\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u4e0d\u53ef\u6b20\u306a\u90e8\u5206\u3067\u3059\u3002\u30cf\u30fc\u30c9\u30d0\u30a6\u30f3\u30b9\u3068\u30bd\u30d5\u30c8\u30d0\u30a6\u30f3\u30b9\u306b\u52a0\u3048\u3066\u3001\u9ad8\u54c1\u8cea\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u82e6\u60c5\u3092\u8a18\u9332\u3057\u3001\u69d8\u3005\u306a\u30d7\u30ed\u30d0\u30a4\u30c0\u3068\u306e\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30eb\u30fc\u30d7\u3092\u7dad\u6301\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7121\u52b9\u306a\u30a2\u30c9\u30ec\u30b9\u3092\u30e1\u30fc\u30ea\u30f3\u30b0\u30ea\u30b9\u30c8\u304b\u3089\u901f\u3084\u304b\u306b\u524a\u9664\u3057\u3001\u82e6\u60c5\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3092\u9078\u3076\u969b\u306b\u306f\u3001\u9069\u5207\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u304c\u5229\u7528\u3067\u304d\u3001\u8a2d\u5b9a\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u52b9\u679c\u7684\u306a\u30d0\u30a6\u30f3\u30b9\u7ba1\u7406\u306e\u306a\u3044\u5927\u91cf\u30e1\u30fc\u30ea\u30f3\u30b0\u306f\u3001\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u8f09\u308b\u30ea\u30b9\u30af\u3092\u5927\u5e45\u306b\u9ad8\u3081\u307e\u3059\u3002<\/p>\n\n<h2>SMTP\u30ea\u30ec\u30fc\u3067\u5927\u91cf\u9001\u4fe1\u3059\u308b\u5834\u5408\u306e\u30ea\u30b9\u30af<\/h2>\n<p>\u5148\u898b\u306e\u660e\u306e\u3042\u308b\u8a08\u753b\u306b\u3088\u3063\u3066\u306e\u307f\u56de\u907f\u3067\u304d\u308b\u5178\u578b\u7684\u306a\u30ea\u30b9\u30af\u306f\u3001\u9001\u96fb\u91cf\u304c\u591a\u3044\u5834\u5408\u306b\u7279\u306b\u591a\u304f\u306a\u308b\u3002\u4e3b\u306a\u30ea\u30b9\u30af\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3002<\/p>\n\n<p>\n<strong>\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8<\/strong>\u691c\u7d22\u7387\u3084\u8a8d\u8a3c\u3001\u30d0\u30a6\u30f3\u30b9\u7387\u3092\u7121\u8996\u3059\u308b\u3068\u3001\u3059\u3050\u306bSpamhaus\u306a\u3069\u306eRBL\u306b\u767b\u9332\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u914d\u4fe1\u7387\u306f\u5927\u5e45\u306b\u4f4e\u4e0b\u3057\u307e\u3059\u3002<br>\n<strong>\u6599\u91d1\u5236\u9650<\/strong>\u5404SMTP\u30b5\u30fc\u30d3\u30b9\u306f\u4e0a\u9650\u3092\u8a2d\u5b9a\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u3092\u8d85\u3048\u308b\u3068\u9045\u5ef6\u3084\u62d2\u5426\u304c\u767a\u751f\u3059\u308b\u3002\u6bb5\u968e\u7684\u306a\u767a\u9001\u306e\u30bf\u30a4\u30e0\u30a6\u30a3\u30f3\u30c9\u30a6\u306b\u3064\u3044\u3066\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<br>\n<strong>\u6280\u8853\u7684\u306a\u5f31\u70b9<\/strong>\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u30c7\u30fc\u30bf\u9001\u4fe1\u3084\u8106\u5f31\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u306f\u3001\u72af\u7f6a\u8005\u306b\u9580\u6238\u3092\u958b\u3044\u3066\u3044\u308b\u3002\u5171\u6709IP\u306f\u7279\u306b\u5371\u967a\u3060\u3002<br>\n<strong>\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u554f\u984c<\/strong>\u3042\u307e\u308a\u306b\u4e00\u822c\u7684\u306a\u6587\u7ae0\u3084\u3001\u4ef6\u540d\u304c\u306a\u304b\u3063\u305f\u308a\u3001\u30ea\u30f3\u30af\u304c\u591a\u3059\u304e\u305f\u308a\u3059\u308b\u3068\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\n<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/smtp-relay-konfiguration-1234.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>\u3053\u306e\u3088\u3046\u306a\u5371\u967a\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u306f\u3001\u9001\u4fe1\/\u30d0\u30a6\u30f3\u30b9\u7387\u306b\u6ce8\u610f\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u30d0\u30a6\u30f3\u30b9\u7387\u304c\u6025\u6fc0\u306b\u4e0a\u6607\u3057\u305f\u5834\u5408\u306f\u3001\u30a2\u30c9\u30ec\u30b9\u30ea\u30b9\u30c8\u306e\u30c1\u30a7\u30c3\u30af\u3084\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u4e00\u6642\u7684\u306a\u5236\u9650\u306a\u3069\u3001\u65e9\u6025\u306b\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30b9\u30d1\u30e0\u30ef\u30fc\u30c9\u3084\u66f8\u5f0f\u306b\u554f\u984c\u304c\u306a\u3044\u304b\u30e1\u30fc\u30eb\u5185\u5bb9\u3092\u5206\u6790\u3059\u308b\u3053\u3068\u3082\u3001\u6210\u529f\u3059\u308b\u30e1\u30fc\u30ea\u30f3\u30b0\u30b3\u30f3\u30bb\u30d7\u30c8\u306e\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3067\u3059\u3002<\/p>\n<p>\u5927\u5bb9\u91cf\u306e\u5834\u5408\u3001\u30c7\u30fc\u30bf\u4fdd\u8b77\u898f\u5236\u306e\u9075\u5b88\u3082\u7126\u70b9\u3068\u306a\u308b\u3002\u4f8b\u3048\u3070\u30e8\u30fc\u30ed\u30c3\u30d1\u3067\u306f\u4e00\u822c\u30c7\u30fc\u30bf\u4fdd\u8b77\u898f\u5247\uff08GDPR\uff09\u306a\u3069\u3001\u5730\u57df\u3084\u56fd\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u898f\u5236\u304c\u9069\u7528\u3055\u308c\u307e\u3059\u3002\u3042\u307e\u308a\u306b\u3082\u591a\u304f\u306e\u3001\u3042\u308b\u3044\u306f\u4e0d\u8981\u306a\u5e83\u544a\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u82e6\u60c5\u306b\u3064\u306a\u304c\u308a\u3001\u9577\u671f\u7684\u306b\u306f\u30e1\u30fc\u30ea\u30f3\u30b0\u30a4\u30f3\u30d5\u30e9\u5168\u4f53\u306b\u8ca0\u62c5\u3092\u304b\u3051\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\uff01<\/p>\n<p>\u307e\u305f\u3001\u4e2d\u7d99\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u4e16\u754c\u4e2d\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092\u914d\u5e03\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3001\u3042\u308b\u3044\u306f\u7279\u5b9a\u306e\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u304c\u512a\u5148\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u3082\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u3088\u3063\u3066\u306f\u3001\u53d7\u4fe1\u8005\u306b\u5730\u7406\u7684\u306b\u8fd1\u3044\u65b9\u304c\u5f85\u3061\u6642\u9593\u304c\u77ed\u7e2e\u3055\u308c\u3001\u914d\u4fe1\u7387\u304c\u5411\u4e0a\u3059\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u3042\u3044\u307e\u3044\u306a\u30d0\u30a6\u30f3\u30b9\uff08\u4e00\u6642\u7684\u306b\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u304c\u4e00\u676f\u306b\u306a\u3063\u305f\u3053\u3068\u306b\u3088\u308b\u30bd\u30d5\u30c8\u30d0\u30a6\u30f3\u30b9\u306a\u3069\uff09\u306e\u5bfe\u51e6\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3001\u660e\u78ba\u306a\u30eb\u30fc\u30eb\u3092\u6c7a\u3081\u3066\u304a\u304f\u3053\u3068\u3082\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002\u53b3\u3057\u3059\u304e\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u6709\u52b9\u306a\u53d7\u4fe1\u8005\u3092\u8aa4\u3063\u3066\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3057\u3001\u7de9\u3059\u304e\u308b\u5bfe\u51e6\u306f\u3001\u914d\u4fe1\u30b3\u30b9\u30c8\u306e\u5897\u52a0\u3084\u30b9\u30d1\u30e0\u306e\u82e6\u60c5\u306e\u53ef\u80fd\u6027\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n<h2>\u5f93\u6765\u306eSMTP\u30ea\u30ec\u30fc\u306b\u4ee3\u308f\u308b\u30af\u30e9\u30a6\u30c9\u30d9\u30fc\u30b9\u306e\u9078\u629e\u80a2<\/h2>\n<p>\u591a\u304f\u306e\u4eba\u306b\u3068\u3063\u3066\u306e\u7591\u554f\u306f\u3001\u81ea\u5206\u3067\u7ba1\u7406\u3059\u308b\u306e\u304b\u3001\u305d\u308c\u3068\u3082\u5c02\u9580\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u59d4\u8a17\u3059\u308b\u306e\u304b\u3001\u3068\u3044\u3046\u3053\u3068\u3060\u308d\u3046\u3002\u30af\u30e9\u30a6\u30c9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u3001\u30a4\u30f3\u30d5\u30e9\u3001\u5206\u6790\u3001\u914d\u4fe1\u304c\u30b5\u30fc\u30d3\u30b9\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u4e00\u90e8\u3067\u3042\u308b\u305f\u3081\u3001\u7c21\u5358\u306b\u59cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u305d\u306e\u305f\u3081\u3001\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u7d99\u7d9a\u7684\u306b\u76e3\u8996\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u3002<\/p>\n<p>Amazon SES\u3001Mailgun\u3001SendGrid\u306a\u3069\u306e\u4eba\u6c17\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30ea\u30ec\u30fc\u3001\u5f37\u529b\u306aAPI\u3001\u5e45\u5e83\u3044\u5206\u6790\u6a5f\u80fd\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u6982\u8981\u3067\u306f\u3001\u3069\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u91cf\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u70b9\u3067\u969b\u7acb\u3063\u3066\u3044\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30d7\u30ed\u30d0\u30a4\u30c0<\/th>\n      <th>SMTP\u30ea\u30ec\u30fc\u304c\u5229\u7528\u53ef\u80fd<\/th>\n      <th>1\u65e5\u306e\u9650\u5ea6\u984d<\/th>\n      <th>\u81ea\u793eIP<\/th>\n      <th>\u63a8\u85a6<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>webhoster.de<\/td>\n      <td>\u566b<\/td>\n      <td>\u975e\u5e38\u306b\u9ad8\u3044<\/td>\n      <td>\u566b<\/td>\n      <td>1\u4f4d<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30a2\u30de\u30be\u30f3SES<\/td>\n      <td>\u566b<\/td>\n      <td>\u9ad8\u3044<\/td>\n      <td>\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n      <td>2\u4f4d<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30bb\u30f3\u30c9\u30b0\u30ea\u30c3\u30c9<\/td>\n      <td>\u566b<\/td>\n      <td>\u9ad8\u3044<\/td>\n      <td>\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n      <td>3\u4f4d<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30e1\u30fc\u30eb\u30ac\u30f3<\/td>\n      <td>\u566b<\/td>\n      <td>\u9ad8\u3044<\/td>\n      <td>\u30aa\u30d7\u30b7\u30e7\u30f3<\/td>\n      <td>4\u4f4d<\/td>\n    <\/tr>\n    <tr>\n      <td>Google\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9<\/td>\n      <td>\u566b<\/td>\n      <td>\u30df\u30c7\u30a3\u30a2\u30e0<\/td>\n      <td>\u3044\u3044\u3048<\/td>\n      <td>5\u4f4d<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<p>\u30af\u30e9\u30a6\u30c9\u30fb\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u629e\u3059\u308b\u5834\u5408\u3001\u3053\u308c\u3089\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u30fb\u30de\u30cd\u30b8\u30e1\u30f3\u30c8\u3001\u30db\u30ef\u30a4\u30c8\u30ea\u30b9\u30c8\u767b\u9332\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30fb\u30d7\u30ec\u30bc\u30f3\u30b9\u306b\u7d99\u7d9a\u7684\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u308b\u3068\u3044\u3046\u4e8b\u5b9f\u306b\u3088\u3063\u3066\u3001\u305d\u306e\u6c7a\u65ad\u304c\u5bb9\u6613\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u3068\u306f\u3044\u3048\u3001\u63d0\u4f9b\u3055\u308c\u308b\u30c7\u30fc\u30bf\uff08\u53d7\u4fe1\u8005\u306e\u500b\u4eba\u60c5\u5831\u3092\u542b\u3080\uff09\u3092\u5916\u90e8\u306b\u4fdd\u5b58\u3059\u3079\u304d\u304b\u3069\u3046\u304b\u306f\u3001\u614e\u91cd\u306b\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u30b3\u30b9\u30c8\u9762\u3060\u3051\u3067\u306a\u304f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fc\u3084\u30c7\u30fc\u30bf\u4fdd\u8b77\u306e\u554f\u984c\u3082\u5927\u304d\u304f\u5f71\u97ff\u3059\u308b\u3002\u30af\u30e9\u30a6\u30c9\u30d9\u30fc\u30b9\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306f\u8fc5\u901f\u306b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5927\u91cf\u306b\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u6708\u3005\u306e\u30b3\u30b9\u30c8\u306f\u793e\u5185\u30a4\u30f3\u30d5\u30e9\u3088\u308a\u3082\u9ad8\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3042\u307e\u308a\u91cd\u8981\u3067\u306a\u3044\u30e1\u30fc\u30eb\u914d\u4fe1\u306f\u30af\u30e9\u30a6\u30c9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3092\u7d4c\u7531\u3057\u3001\u7279\u306b\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u591a\u3044\u30ad\u30e3\u30f3\u30da\u30fc\u30f3\u306f\u5c02\u7528\u30b5\u30fc\u30d0\u30fc\u3092\u7d4c\u7531\u3059\u308b\u3068\u3044\u3046\u3001\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u304c\u63a8\u5968\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n<p>\u30b5\u30fc\u30d3\u30b9\u54c1\u8cea\u3068\u30b5\u30dd\u30fc\u30c8\u30ec\u30d9\u30eb\u3082\u30af\u30e9\u30a6\u30c9\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u300224\u6642\u9593\u4f53\u5236\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u3082\u3042\u308c\u3070\u3001\u30bb\u30eb\u30d5\u30b5\u30fc\u30d3\u30b9\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u5927\u304d\u304f\u4f9d\u5b58\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u3082\u3042\u308b\u3002\u614c\u305f\u3060\u3057\u3044\u30d4\u30fc\u30af\u6642\u306b\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u3044\u304b\u306b\u8fc5\u901f\u306b\u9069\u5207\u306a\u30b5\u30dd\u30fc\u30c8\u3092\u53d7\u3051\u3089\u308c\u308b\u304b\u304c\u91cd\u8981\u306b\u306a\u308b\u3002\u91cd\u8981\u306a\u51fa\u8377\u306e\u77ac\u9593\u306b\u4e0d\u6109\u5feb\u306a\u9a5a\u304d\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u5404\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3067\u5229\u7528\u3067\u304d\u308b\u30b5\u30fc\u30d3\u30b9\u30d1\u30c3\u30b1\u30fc\u30b8\u3092\u4e8b\u524d\u306b\u78ba\u8a8d\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n<h2>WordPress\u304b\u3089\u5916\u90e8SMTP\u30ea\u30ec\u30fc\u3078\u306e\u63a5\u7d9a<\/h2>\n<p>WordPress\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u904b\u55b6\u3057\u3001\u5b9a\u671f\u7684\u306b\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044SMTP\u63a5\u7d9a\u304c\u5fc5\u8981\u3067\u3059\u3002WP Mail SMTP\u30d7\u30e9\u30b0\u30a4\u30f3\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u4ecb\u3057\u3066\u9ad8\u901f\u306a\u7d71\u5408\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002SendGrid\u3084Mailgun\u304b\u3089webhoster.de\u307e\u3067\u3001\u95a2\u9023\u3059\u308bSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u5b9f\u8cea\u7684\u306b\u3059\u3079\u3066\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3088\u308a\u591a\u304f\u306e\u6a5f\u80fd\u3092\u304a\u63a2\u3057\u306a\u3089 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%af%e3%83%bc%e3%83%89%e3%83%97%e3%83%ac%e3%82%b9e%e3%83%a1%e3%83%bc%e3%83%ab%e3%83%9e%e3%83%bc%e3%82%b1%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%83%84%e3%83%bc%e3%83%ab%e3%82%aa%e3%83%bc%e3%83%88\/\">WordPress\u7528\u30e1\u30fc\u30eb\u30de\u30fc\u30b1\u30c6\u30a3\u30f3\u30b0\u30c4\u30fc\u30eb<\/a> \u30d3\u30e5\u30fc\u3002\u3053\u308c\u3089\u306fSMTP\u3001\u30a2\u30ca\u30ea\u30c6\u30a3\u30af\u30b9\u3001\u30ea\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u307f\u5408\u308f\u305b\u3001\u591a\u304f\u306e\u624b\u52d5\u4e2d\u9593\u30b9\u30c6\u30c3\u30d7\u3092\u7bc0\u7d04\u3059\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/smtp-relay-tech-office-5821.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>\u5b9f\u969b\u306eSMTP\u30ea\u30ec\u30fc\u306b\u52a0\u3048\u3066\u3001WordPress\u30aa\u30da\u30ec\u30fc\u30bf\u306f\u3001\u30ea\u30b9\u30c8\u30bb\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3001\u81ea\u52d5\u5316\uff08\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u30e1\u30fc\u30eb\u3001\u30a6\u30a7\u30eb\u30ab\u30e0\u30bb\u30af\u30b7\u30e7\u30f3\u306a\u3069\uff09\u3001A\/B\u30c6\u30b9\u30c8\u3092\u63d0\u4f9b\u3059\u308b\u5c02\u9580\u7684\u306a\u30e1\u30fc\u30ea\u30f3\u30b0\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u6069\u6075\u3092\u53d7\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u306e\u884c\u52d5\uff08\u30af\u30ea\u30c3\u30af\u7387\u3084\u958b\u5c01\u7387\uff09\u306b\u57fa\u3065\u3044\u3066\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u30d5\u30a9\u30ed\u30fc\u30a2\u30c3\u30d7\u30e1\u30fc\u30eb\u3084\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u7d5e\u3063\u305f\u304a\u3059\u3059\u3081\u5546\u54c1\u306a\u3069\u3001\u3055\u3089\u306a\u308b\u30d1\u30fc\u30bd\u30ca\u30e9\u30a4\u30ba\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30a4\u30e4\u30ea\u30c6\u30a3\u304c\u9ad8\u307e\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u3067\u306f\u306a\u304f\u3001\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u53ef\u80fd\u6027\u3082\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n<p>\u7279\u306bWooCommerce\u30b7\u30e7\u30c3\u30d7\u306b\u3068\u3063\u3066\u3001\u5b89\u5b9a\u3057\u305fSMTP\u63a5\u7d9a\u306f\u6ce8\u6587\u78ba\u8a8d\u3001\u767a\u9001\u66f4\u65b0\u3001\u8acb\u6c42\u66f8\u306e\u5b89\u5168\u306a\u914d\u4fe1\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u969c\u5bb3\u3084\u8a2d\u5b9a\u30df\u30b9\u306f\u9867\u5ba2\u306b\u8ff7\u60d1\u3092\u304b\u3051\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u91cd\u8981\u306a\u53d6\u5f15\u30c7\u30fc\u30bf\u304c\u8cfc\u5165\u8005\u306b\u5c4a\u304b\u306a\u3044\u5834\u5408\u3001\u6cd5\u7684\u306a\u5f71\u97ff\u3092\u53ca\u307c\u3059\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n<h2>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u3068\u30ec\u30dd\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a\u3059\u3079\u3066\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b\u65b9\u6cd5<\/h2>\n<p>\u30de\u30b9\u30fb\u30e1\u30fc\u30ea\u30f3\u30b0\u30fb\u30b7\u30b9\u30c6\u30e0\u3092\u6210\u529f\u3055\u305b\u308b\u306b\u306f\u3001\u7d99\u7d9a\u7684\u306a 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class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/08\/smtp-relay-massenmails-1234.webp\" alt=\"\" width=\"1536\" 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