{"id":11104,"date":"2025-06-15T15:06:35","date_gmt":"2025-06-15T13:06:35","guid":{"rendered":"https:\/\/webhosting.de\/postfix-fortgeschrittene-konfiguration-sicherheit-hosting-mailhub\/"},"modified":"2025-06-15T15:06:35","modified_gmt":"2025-06-15T13:06:35","slug":"postfix-%e9%ab%98%e5%ba%a6%e3%81%aa%e8%a8%ad%e5%ae%9a-%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%83%a1%e3%83%bc%e3%83%ab%e3%83%8f","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/postfix-fortgeschrittene-konfiguration-sicherheit-hosting-mailhub\/","title":{"rendered":"\u4e0a\u7d1a\u8005\u5411\u3051Postfix\uff1a\u8a2d\u5b9a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u81ea\u52d5\u5316\u306e\u6700\u9069\u5316"},"content":{"rendered":"<p>\u30c8\u30d4\u30c3\u30af <strong>Postfix\u30a2\u30c9\u30d0\u30f3\u30b9<\/strong> \u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u5b89\u5168\u3067\u67d4\u8edf\u304b\u3064\u9ad8\u6027\u80fd\u306a\u8a2d\u5b9a\u306e\u305f\u3081\u306e\u91cd\u8981\u306a\u5074\u9762\u3092\u6271\u3063\u3066\u3044\u307e\u3059\u3002\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u74b0\u5883\u3067\u306f\u3001Postfix\u306f\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u78ba\u5b9f\u306a\u914d\u4fe1\u3001\u8a8d\u8a3c\u3001\u5b8c\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u4e0a\u3067\u4e2d\u5fc3\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<ul>\n  <li><strong>\u30e1\u30a4\u30f3CF<\/strong> \u305d\u3057\u3066 <strong>master.cf<\/strong> \u8907\u96d1\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u3082\u30bf\u30fc\u30b2\u30c3\u30c8\u8a2d\u5b9a\u304c\u53ef\u80fd<\/li>\n  <li><strong>\u8f38\u9001\u898f\u5247<\/strong> \u3068\u30a8\u30a4\u30ea\u30a2\u30b9\u7ba1\u7406\u306b\u3088\u308a\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u8ee2\u9001\u304c\u53ef\u80fd\u306b\u306a\u308b\u3002<\/li>\n  <li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56<\/strong> SMTP-AUTH\u3001SPF\u3001DKIM\u3001DMARC \u306a\u3069\u306f\u3001\u914d\u4fe1\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong>\u30ed\u30ae\u30f3\u30b0\u3068\u81ea\u52d5\u5316\u306b\u3088\u308a\u4fe1\u983c\u6027\u3068\u4fdd\u5b88\u6027\u304c\u5411\u4e0a<\/li>\n  <li><strong>\u30af\u30e9\u30b9\u30bf\u30fc\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3<\/strong> \u62e1\u5f35\u6027\u3068\u914d\u4fe1\u6027\u3092\u6700\u9069\u5316\u3059\u308b\u5916\u90e8\u30ea\u30ec\u30fc<\/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\/06\/advanced-postfix-setup-9735.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>main.cf: \u751f\u7523\u7684\u306a\u30e1\u30fc\u30eb\u74b0\u5883\u306e\u305f\u3081\u306e\u5fae\u8abf\u6574<\/h2>\n<p>\u30d5\u30a1\u30a4\u30eb\u5185\u306e <strong>\u30e1\u30a4\u30f3CF<\/strong> \u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u6027\u8cea\u3092\u7279\u5fb4\u3065\u3051\u308b\u4e2d\u5fc3\u7684\u306a\u8a2d\u5b9a\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u7279\u306b\u30de\u30eb\u30c1\u30c9\u30e1\u30a4\u30f3\u8a2d\u5b9a\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002 <code>\u30de\u30a4\u30db\u30b9\u30c8\u30cd\u30fc\u30e0<\/code>, <code>\u30de\u30a4\u30c9\u30e1\u30a4\u30f3<\/code> \u305d\u3057\u3066 <code>\u76ee\u7684\u5730<\/code> \u8fd4\u54c1\u3084\u30e1\u30fc\u30eb\u306e\u30eb\u30fc\u30d7\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u4e00\u8cab\u3057\u3066\u3002<\/p>\n<p>\u306e\u52a9\u3051\u3092\u501f\u308a\u3066 <code>\u4eee\u60f3\u30a8\u30a4\u30ea\u30a2\u30b9\u30de\u30c3\u30d7<\/code> \u30a2\u30c9\u30ec\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u9759\u7684\u306a\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304b\u3089MySQL\u3084LDAP\u306e\u3088\u3046\u306a\u67d4\u8edf\u306a\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u30b7\u30b9\u30c6\u30e0\u306b\u79fb\u884c\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e1\u30fc\u30eb\u30a8\u30a4\u30ea\u30a2\u30b9\u3001\u8ee2\u9001\u3001\u30c9\u30e1\u30a4\u30f3\u3092\u52d5\u7684\u306b\u7ba1\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u30cf\u30c3\u30b7\u30e5\u30d5\u30a1\u30a4\u30eb\u306f\u5b9a\u671f\u7684\u306b <code>\u30dd\u30b9\u30c8\u30de\u30c3\u30d7<\/code> \u3092\u66f4\u65b0\u3059\u308b\u3002<\/p>\n<p>\u7279\u306b\u6ce8\u76ee\u3059\u3079\u304d\u306f <strong>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30fb\u30de\u30c3\u30d7<\/strong>.\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3068\u5916\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9593\u3067\u30b9\u30d7\u30ea\u30c3\u30c6\u30a3\u30f3\u30b0\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u904b\u7528\u3059\u308b\u5834\u5408\u306b\u4e0d\u53ef\u6b20\u3060\u3002<\/p>\n<p>\u8ca2\u732e <a href=\"https:\/\/webhosting.de\/ja\/postfix%e8%a8%ad%e5%ae%9a%e3%82%ac%e3%82%a4%e3%83%89-%e3%83%92%e3%83%b3%e3%83%88-%e3%83%a1%e3%83%bc%e3%83%ab%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e8%a8%ad%e5%ae%9a-%e3%83%a1%e3%83%bc%e3%83%ab%e3%82%bb\/\">Postfix\u306e\u8a2d\u5b9a\u3068Maildir\u306e\u30d2\u30f3\u30c8<\/a> \u306f\u3001\u30b5\u30fc\u30d0\u30fc\u30ec\u30d9\u30eb\u3067\u306e\u6700\u9069\u5316\u6226\u7565\u306b\u95a2\u3059\u308b\u3055\u3089\u306a\u308b\u6d1e\u5bdf\u3092\u63d0\u4f9b\u3059\u308b\u3002<\/p>\n\n<p>\u52a0\u3048\u3066\u3001\u6b21\u306e\u3053\u3068\u3082\u91cd\u8981\u3067\u3042\u308b\u3002 <strong>\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u30fb\u30d1\u30e9\u30e1\u30fc\u30bf\u30fc<\/strong> \u306b\u65bc\u3044\u3066 <strong>\u30e1\u30a4\u30f3CF<\/strong> \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fc\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u660e\u793a\u7684\u306b\u884c\u3046\u3002\u4f8b\u3048\u3070 <code>smtp_tls_security_level<\/code> \u306f \"may \"\u307e\u305f\u306f \"encrypt \"\u306b\u8a2d\u5b9a\u3067\u304d\u308b\u304c\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u304c\u5e38\u306b\u6697\u53f7\u5316\u3055\u308c\u308b\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u6761\u4ef6\u3068\u306a\u308b\u3002\u7279\u306b\u751f\u7523\u7684\u306a\u74b0\u5883\u3067\u306f <code>smtp_tls_security_level = encrypt<\/code>\u6280\u8853\u7684\u306b\u53ef\u80fd\u306a\u5834\u5408\u306f\u3001\u30a8\u30f3\u30c9\u30fb\u30c4\u30fc\u30fb\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316\u3092\u5f37\u5236\u3059\u308b\u3002\u306e\u5fae\u8abf\u6574\u3082\u91cd\u8981\u3067\u3042\u308b\u3002 <code>queue_run_delay<\/code> \u305d\u3057\u3066 <code>\u6700\u5c0f\u30d0\u30c3\u30af\u30aa\u30d5\u6642\u9593<\/code>\u3067\u3001Postfix \u304c\u4e0d\u9054\u30e1\u30fc\u30eb\u306e\u518d\u914d\u4fe1\u3092\u8a66\u307f\u308b\u983b\u5ea6\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u7279\u306b\u3001\u4e00\u6642\u7684\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u3069\u3053\u306b\u3082\u5c4a\u304b\u306a\u304b\u3063\u305f\u308a\u3001\u3059\u3050\u306b\u30d0\u30a6\u30f3\u30b9\u3055\u308c\u305f\u308a\u3059\u308b\u306e\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3082\u3046\u3072\u3068\u3064\u306e\u9078\u629e\u80a2\u306f <code>disable_dns_lookups<\/code>\u9589\u3058\u305f\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f5c\u696d\u3059\u308b\u5834\u5408\u306a\u3069\u3001DNS\u30af\u30a8\u30ea\u3092\u9078\u629e\u7684\u306b\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u5f85\u3061\u6642\u9593\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u5185\u90e8\u306eDNS\u3068\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u69cb\u9020\u306b\u95a2\u3059\u308b\u6b63\u78ba\u306a\u77e5\u8b58\u304c\u5fc5\u8981\u3067\u3059\u3002\u30e1\u30fc\u30eb\u91cf\u304c\u591a\u3044\u5834\u5408\u306f\u3001\u30d1\u30e9\u30e1\u30fc\u30bf <code>\u30c7\u30d5\u30a9\u30eb\u30c8\u30fb\u30c7\u30b9\u30c6\u30a3\u30cd\u30fc\u30b7\u30e7\u30f3\u901a\u8ca8\u30ea\u30df\u30c3\u30c8<\/code> SMTP\u914d\u4fe1\u306e\u540c\u6642\u6027\u3092\u9ad8\u3081\u3001\u30dc\u30c8\u30eb\u30cd\u30c3\u30af\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u3067\u3042\u308b\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\/06\/postfix-optimization-tech-savy-2471.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u9ad8\u5ea6\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u6b63\u3057\u304f\u5b9f\u65bd\u3059\u308b<\/h2>\n<p>Postfix\u306fTLS\u306b\u3088\u308b\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u3092\u53ef\u80fd\u306b\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u8ab0\u304c\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u6a29\u9650\u3092\u6301\u3064\u304b\u3001\u7279\u5b9a\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3082\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u79c1\u306f <strong>SMTP-AUTH<\/strong>\u306b\u3088\u3063\u3066 <code>smtpd_sasl_auth_enable = yes<\/code> \u3068\u4e92\u63db\u6027\u306e\u3042\u308bSASL\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3092\u7d71\u5408\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u524d\u306b\u80fd\u52d5\u7684\u306b\u81ea\u5206\u81ea\u8eab\u3092\u8a8d\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3002 <code>smtpd_recipient_restrictions<\/code> \u305d\u3057\u3066 <code>smtpd_relay_restrictions<\/code> \u30b5\u30fc\u30d0\u30fc\u304c\u30aa\u30fc\u30d7\u30f3\u30ea\u30ec\u30fc\u3068\u3057\u3066\u60aa\u7528\u3055\u308c\u308b\u306e\u3092\u9632\u3050\u3002\u79c1\u306f\u30eb\u30fc\u30eb\u306b\u6b21\u306e\u3088\u3046\u306a\u8ce2\u660e\u306a\u30dd\u30ea\u30b7\u30fc\u3092\u8ffd\u52a0\u3057\u3066\u3044\u308b\u3002 <code>\u8a31\u53ef_sasl_authenticated<\/code> \u6216\u3044\u306f <code>reject_unauth_destination<\/code>.<\/p>\n<p>\u30c9\u30e1\u30a4\u30f3\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u5b9f\u88c5\u304c\u5fc5\u8981\u3067\u3042\u308b\u3002 <strong>SPF\u3001DKIM<\/strong> \u305d\u3057\u3066 <strong>\uff24\uff2d\uff21\uff32\uff23<\/strong> \u6b20\u304b\u305b\u306a\u3044\u3002SPF\u306f\u30dd\u30ea\u30b7\u30fc\u30c9\u3092\u4f7f\u3063\u3066\u3044\u308b\u3001 <code>\u30aa\u30da\u30f3\u30c9\u30ad\u30e0<\/code> \u3092\u7f72\u540d\u306b\u4f7f\u7528\u3057\u3001\u4e0d\u6b63\u30b3\u30d4\u30fc\u3092\u9632\u6b62\u3059\u308bDMARC\u30dd\u30ea\u30b7\u30fc\u3092\u9078\u629e\u3059\u308b\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u304c\u3042\u308b\u3002 <code>postfix-policyd-spf-python<\/code> \u7a3c\u50cd\u4e2d\u306e\u30b7\u30b9\u30c6\u30e0\u3078\u306e\u7d71\u5408\u3092\u5bb9\u6613\u306b\u3059\u308b\u3002<\/p>\n\n<p>\u3053\u308c\u3082\u304a\u52e7\u3081\u3060\u3001 <strong>\u30b0\u30ea\u30fc\u30ea\u30b9\u30c6\u30a3\u30f3\u30b0<\/strong> \u3092\u8003\u3048\u3066\u307f\u3088\u3046\u3002\u305d\u306e\u539f\u7406\u306f\u6b63\u5f53\u306a\u30b5\u30fc\u30d0\u30fc\u306f\u518d\u8a66\u884c\u3059\u308b\u304c\u3001\u591a\u304f\u306e\u30b9\u30d1\u30e0\u30dc\u30c3\u30c8\u306f1\u56de\u3057\u304b\u8a66\u884c\u3057\u306a\u3044\u3002Postfix\u3067greylisting\u3092\u884c\u3046\u5834\u5408\u3001\u4f8b\u3048\u3070\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002 <code>\u30dd\u30b9\u30c8\u30b0\u30ec\u30fc<\/code> \u30b9\u30d1\u30e0\u306e\u6c3e\u6feb\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306b\u307e\u305f <strong>RBL\u30ea\u30b9\u30c8<\/strong> (\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30fb\u30d6\u30e9\u30c3\u30af\u30db\u30fc\u30eb\u30fb\u30ea\u30b9\u30c8\uff09\u306e <code>smtp_recipient_restrictions<\/code> \u30b9\u30d1\u30e0\u306e\u65e2\u77e5\u306e\u767a\u4fe1\u6e90\u3092\u65e9\u3044\u6bb5\u968e\u3067\u30d6\u30ed\u30c3\u30af\u3059\u308b\u3002<\/p>\n<p>\u9ad8\u5ea6\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fc\u6226\u7565\u306e\u3082\u3046\u4e00\u3064\u306e\u6838\u3068\u306a\u308b\u8981\u7d20\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u5206\u96e2\u3067\u3042\u308b\u3002 <strong>\u30a4\u30f3\u30d0\u30a6\u30f3\u30c9\u304a\u3088\u3073\u30a2\u30a6\u30c8\u30d0\u30a6\u30f3\u30c9\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc<\/strong>.\u7269\u7406\u7684\u306b\uff08\u307e\u305f\u306f\u4eee\u60f3\u7684\u306b\uff092\u3064\u306ePostfix\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u3067\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u9001\u4fe1\u30e1\u30fc\u30eb\u3068\u306f\u5225\u306b\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u7ba1\u7406\u8005\u306f\u3001\u53d7\u4fe1\u30b7\u30b9\u30c6\u30e0\u3067SpamAssassin\u3001rspamd\u3001ClamAV\u306a\u3069\u306e\u5305\u62ec\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u8a2d\u5b9a\u3057\u3066\u30a6\u30a4\u30eb\u30b9\u30b9\u30ad\u30e3\u30f3\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u9001\u4fe1\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30b9\u30d1\u30e0\u304c\u9001\u4fe1\u3055\u308c\u308b\u306e\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u30a2\u30ab\u30a6\u30f3\u30c8\u306b\u5bfe\u3057\u3066\u53b3\u3057\u3044\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3084\u30ec\u30fc\u30c8\u5236\u9650\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<h2>master.cf\uff1a\u30b5\u30fc\u30d3\u30b9\u306e\u76ee\u6a19\u7ba1\u7406<\/h2>\n<p>\u30d5\u30a1\u30a4\u30eb\u5185\u306e <strong>master.cf<\/strong> \u79c1\u306f\u7279\u306b\u3001\u3069\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u3069\u306e\u30dd\u30fc\u30c8\u3067\u3001\u3069\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u52d5\u4f5c\u3059\u308b\u304b\u3092\u5236\u5fa1\u3057\u3066\u3044\u308b\u3002\u305f\u3068\u3048\u3070\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u305f\u30d5\u30a3\u30eb\u30bf\u30fc\u30c1\u30a7\u30fc\u30f3\u3067\u72ec\u81ea\u306eSMTP\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5b9a\u7fa9\u3057\u305f\u308a\u3001\u30b5\u30fc\u30d3\u30b9\u3092chroot\u3067\u64cd\u4f5c\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u6c7a\u3081\u305f\u308a\u3059\u308b\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u5225\u3005\u306e\u30ad\u30e5\u30fc\u306b\u30d0\u30f3\u30c9\u30eb\u3059\u308b\u305f\u3081\u306b\u3001\u500b\u3005\u306e\u30d7\u30ed\u30bb\u30b9\u306e\u30ea\u30bd\u30fc\u30b9\u5229\u7528\u3092\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u76f4\u63a5\u7ba1\u7406\u3057\u3066\u3044\u308b\u3002Amavis\u3084rspamd\u306e\u3088\u3046\u306a\u5916\u90e8\u306e\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b <code>master.cf<\/code> \u5c02\u7528\u30b5\u30fc\u30d3\u30b9\u3068\u5229\u7528 <code>\u30b3\u30f3\u30c6\u30f3\u30c4\u30d5\u30a3\u30eb\u30bf\u30fc<\/code>\u3092\u7d71\u5408\u3059\u308b\u3002<\/p>\n<p>\u5165\u529b\u30af\u30e9\u30b9\u304c\u7570\u306a\u308b\u4e26\u5217\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u5834\u5408\uff08\u5b89\u5b9a\u7cfb\u3068\u30d9\u30fc\u30bf\u7cfb\u306a\u3069\uff09\u3001\u5225\u3005\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f7f\u3063\u3066\u30e1\u30fc\u30eb\u306e\u51e6\u7406\u3068\u8ee2\u9001\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u304d\u308b\u3002<\/p>\n\n<p>\u6642\u70b9\u3067\u306f <code>master.cf<\/code> \u7ba1\u7406\u8005\u306f\u3001\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306a\u3053\u3068\u3082\u3067\u304d\u308b\u3002 <strong>\u30d7\u30ed\u30bb\u30b9\u6570\u306b\u3088\u308b\u5236\u9650<\/strong> \u30e1\u30fc\u30eb\u306e\u91cf\u304c\u591a\u3044\u3068\u304d\u306b\u30b7\u30b9\u30c6\u30e0\u304c\u904e\u8ca0\u8377\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u3067\u3042\u308b\u3002\u30aa\u30d7\u30b7\u30e7\u30f3 <code>-o<\/code> (\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9)\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u5185\u306e <code>\uff33\uff2d\uff34\uff30<\/code> \u6216\u3044\u306f <code>\u670d\u5f93<\/code> \u306e\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <code>\u30e1\u30a4\u30f3CF<\/code> \u3092\u5bfe\u8c61\u306b\u4e0a\u66f8\u304d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u6295\u7a3f\u30dd\u30fc\u30c8\uff08\u30dd\u30fc\u30c8587\uff09\u306b\u306f\u3001\u6a19\u6e96\u306eSMTP\u30dd\u30fc\u30c825\u3068\u306f\u7570\u306a\u308bTLS\u8a2d\u5b9a\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u6295\u7a3f\u30dd\u30fc\u30c8\u3092\u8a8d\u8a3c\u4ed8\u304dTLS\u306b\u4e00\u8cab\u3057\u3066\u5236\u9650\u3059\u308b\u4e00\u65b9\u3067\u3001\u30dd\u30fc\u30c825\u306f\u8a8d\u8a3c\u306a\u3057\u3067\u5916\u90e8\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u5165\u308c\u308b\u5f79\u5272\u3092\u5f15\u304d\u7d9a\u304d\u62c5\u3046\u3068\u4eee\u5b9a\u3057\u305f\u5834\u5408\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u3059\u3079\u3066 <code>master.cf<\/code> \u67d4\u8edf\u306b\u5bfe\u5fdc\u3067\u304d\u308b\u3002<\/p>\n<p>\u3082\u3046\u3072\u3068\u3064\u306e\u76ee\u7389\u306f <code>dnsblog<\/code> \u305d\u3057\u3066 <code>\u30d9\u30ea\u30d5\u30a1\u30a4<\/code>-\u30b5\u30fc\u30d3\u30b9\u3092\u500b\u5225\u306b\u8a2d\u5b9a\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001DNS\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u72ec\u7acb\u3057\u305f\u30d7\u30ed\u30bb\u30b9\u3067\u5b9f\u884c\u3067\u304d\u3001\u8a2d\u5b9a\u30a8\u30e9\u30fc\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u500b\u3005\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u5bfe\u8c61\u7684\u306b\u5206\u96e2\u3059\u308b\u3053\u3068\u3067\u3001\u969c\u5bb3\u767a\u751f\u6642\u306e\u900f\u660e\u6027\u304c\u9ad8\u307e\u308a\u3001\u30c7\u30d0\u30c3\u30b0\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<h2>transport_maps\u306b\u3088\u308b\u914d\u4fe1\u30ed\u30b8\u30c3\u30af\u306e\u6700\u9069\u5316<\/h2>\n<p>\u3067\u500b\u3005\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u6226\u7565\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u3002 <strong>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30fb\u30de\u30c3\u30d7<\/strong>.\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u5c02\u7528\u306e\u30ea\u30ec\u30fc\u306b\u76f4\u63a5\u8ee2\u9001\u3057\u305f\u308a\u3001\u5185\u90e8\u30b7\u30b9\u30c6\u30e0\u7528\u306e\u4f8b\u5916\u3092\u5b9a\u7fa9\u3057\u305f\u308a\u3001\u5c02\u7528\u306e\u30af\u30e9\u30b9\u30bf\u30fc\u30ce\u30fc\u30c9\u7528\u306b\u30c9\u30e1\u30a4\u30f3\u3092\u8a2d\u5b9a\u3057\u305f\u308a\u3059\u308b\u3002<\/p>\n<p>\u3053\u306e\u6a5f\u80fd\u306f\u3001\u8907\u6570\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u6301\u3064\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u30a4\u30f3\u30d5\u30e9\u3084\u3001\u81ea\u5206\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u5916\u90e8\u306eSMTP\u30ea\u30ec\u30fc\u306b\u5207\u308a\u66ff\u3048\u308b\u3068\u304d\u306b\u6c7a\u5b9a\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u3002Postfix \u3067\u306f <code>\u30ea\u30ec\u30fc\u30db\u30b9\u30c8<\/code> Amazon SES\u3084Sendinblue\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u3078\u306e\u8a8d\u8a3c\u30d9\u30fc\u30b9\u306e\u914d\u4fe1\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n<p><a href=\"https:\/\/webhosting.de\/ja\/postfix-%e5%9f%ba%e6%9c%ac%e3%82%a4%e3%83%b3%e3%82%b9%e3%83%88%e3%83%bc%e3%83%ab%e8%a8%ad%e5%ae%9a%e3%82%ac%e3%82%a4%e3%83%89\/\">Postfix\u8a2d\u5b9a\u306e\u57fa\u672c<\/a> \u3053\u308c\u3089\u306e\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4f7f\u3044\u59cb\u3081\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002<\/p>\n\n<p>\u5e83\u7bc4\u306a <em>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u30fb\u30de\u30c3\u30d7<\/em>-\u30eb\u30fc\u30eb\u3067\u6982\u8981\u3092\u7ba1\u7406\u3059\u308b\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306b\u30c9\u30e1\u30a4\u30f3\u3084\u30bf\u30fc\u30b2\u30c3\u30c8\u30b7\u30b9\u30c6\u30e0\u304c\u591a\u3051\u308c\u3070\u591a\u3044\u307b\u3069\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4ecb\u3057\u305f\u96c6\u4e2d\u7ba1\u7406\u306f\u3088\u308a\u7406\u306b\u304b\u306a\u3063\u305f\u3082\u306e\u306b\u306a\u308a\u307e\u3059\u3002\u3059\u3079\u3066\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u60c5\u5831\u306fMySQL\u3084PostgreSQL\u306e\u30c6\u30fc\u30d6\u30eb\u3067\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001Postfix\u306f\u305d\u308c\u306b\u52d5\u7684\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u7ba1\u7406\u8005\u306f\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u3092\u7ba1\u7406\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002 <code>\u30dd\u30b9\u30c8\u30de\u30c3\u30d7<\/code> \u30b7\u30b9\u30c6\u30e0\u3092\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u306f\u306a\u3044\u304c\u3001\u305d\u306e\u4ee3\u308f\u308a\u306b\u3001\u8981\u4ef6\u306e\u5897\u52a0\u306b\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u9069\u5fdc\u3059\u308b\u30e9\u30a4\u30d6\u30d9\u30fc\u30b9\u306e\u30b3\u30f3\u30d5\u30a3\u30ae\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u53d7\u3051\u53d6\u308b\u3002<\/p>\n<p>\u3082\u3046\u3072\u3068\u3064\u306e\u30c8\u30ea\u30c3\u30af\u306f <code>\u9001\u4fe1\u8005\u4f9d\u5b58\u306e\u30ea\u30ec\u30fc\u30db\u30b9\u30c8\u30de\u30c3\u30d7<\/code>.\u3053\u308c\u306b\u3088\u308a\u3001\u7570\u306a\u308b\u9001\u4fe1\u8005\u30a2\u30c9\u30ec\u30b9\uff08\u307e\u305f\u306f\u30c9\u30e1\u30a4\u30f3\uff09\u306b\u5bfe\u3057\u3066\u7279\u5b9a\u306e\u30ea\u30ec\u30fc\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u8907\u6570\u306e\u30d6\u30e9\u30f3\u30c9\u3084\u9867\u5ba2\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u540c\u3058\u30b5\u30fc\u30d0\u30fc\u3067\u904b\u7528\u3057\u3001\u5404\u30c9\u30e1\u30a4\u30f3\u3092\u7570\u306a\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u7d4c\u7531\u3067\u914d\u4fe1\u3057\u305f\u3044\u5834\u5408\u306b\u7279\u306b\u5b9f\u7528\u7684\u3067\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u305d\u308c\u305e\u308c\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4fdd\u8b77\u3057\u3001\u30e1\u30fc\u30eb\u7f72\u540d\u3092\u304d\u308c\u3044\u306b\u5206\u96e2\u3059\u308b\u305f\u3081\u306a\u3069\u306b\u3001\u9001\u4fe1\u8005\u3054\u3068\u306b\u500b\u5225\u306e\u8a8d\u8a3c\u3092\u4fdd\u5b58\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\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\/06\/postfix-optimale-konfiguration-9843.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>Postfix\u306b\u3088\u308b\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u3068\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b7\u30f3\u30b0<\/h2>\n<p>\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u305f\u3081\u306b\u3001\u79c1\u306f\u30e1\u30fc\u30eb\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5206\u6563\u3055\u305b\u3066\u3044\u308b\u3002\u5404\u30ce\u30fc\u30c9\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u8a2d\u5b9a\u3092\u53d7\u3051\u53d6\u308b\u3002 <code>\u540c\u671f<\/code> \u6216\u3044\u306f <code>\u30ae\u30c3\u30c8<\/code>.\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b5\u30fc\u306f\u914d\u4fe1\u306e\u8ca0\u8377\u3092\u5206\u6563\u3057\u3001\u969c\u5bb3\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3059\u308b\u3002<\/p>\n<p>MX\u30ec\u30b3\u30fc\u30c9\u306eDNS\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3068\u30a2\u30af\u30c6\u30a3\u30d6\u30fb\u30af\u30e9\u30b9\u30bf\u76e3\u8996\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u3044\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30ad\u30e5\u30fc\u306f\u30ed\u30fc\u30ab\u30eb\u3067\u76e3\u8996\u3057\u3001\u30ed\u30b0\u306frsyslog\u3067\u4e00\u5143\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u69cb\u9020\u306f\u6b21\u306e\u3088\u3046\u306b\u3057\u3066\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002 <code>\u30db\u30b9\u30c8\u540d\u30d5\u30a3\u30eb\u30bf<\/code> 3\u3064\u4ee5\u4e0a\u306e\u4e26\u5217\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3082\u6b63\u78ba\u306b\u3002<\/p>\n<p>\u5b8c\u5168\u306a\u9ad8\u53ef\u7528\u6027\u3092\u5b9f\u73fe\u3059\u308b\u306b\u306f\u3001Postfix\u7528\u306ePrometheus Exporter\u3092\u4f7f\u3063\u305f\u81ea\u52d5\u76e3\u8996\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n\n<p>\u7279\u306b\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u3067\u306f <strong>\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30fb\u30c7\u30fc\u30bf\u306e\u540c\u671f<\/strong> \u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u3060\u3002\u3082\u3057Postfix\u306b\u52a0\u3048\u3066 <code>\u9ce9\u5c0f\u5c4b<\/code> (IMAP\u3068POP3\u306e\u5834\u5408)\u3001maildir\u307e\u305f\u306fmbox\u30d5\u30a1\u30a4\u30eb\u306e\u5834\u6240\u3068\u3001\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306e\u540c\u671f\u65b9\u6cd5\u3092\u6b63\u78ba\u306b\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3088\u304f\u4f7f\u308f\u308c\u308b\u65b9\u6cd5\u306f\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u306e\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002 <code>\u540c\u671f<\/code> \u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30ce\u30fc\u30c9\u304c\u6545\u969c\u3057\u3066\u3082\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u5e38\u306b\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3002\u9001\u4fe1\u30e1\u30fc\u30eb\u306e\u307f\u3092\u51e6\u7406\u3059\u308b\u5916\u90e8 SMTP \u30ea\u30ec\u30fc\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u308b\u3002 <code>\u30cf\u30d7\u30ed\u30ad\u30b7\u30fc<\/code> \u6216\u3044\u306f <code>\u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6<\/code> \u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30ce\u30fc\u30c9\u306b\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u5206\u914d\u3059\u308b\u3002<\/p>\n<p>\u8907\u6570\u306e\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3092\u7d71\u5408\u3059\u308b\u5834\u5408\u306f <strong>\u30b8\u30aa\u30fb\u30ea\u30c0\u30f3\u30c0\u30f3\u30b7\u30fc<\/strong> \u5730\u57df\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3067\u3082\u3001\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u3068\u767a\u9001\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3002\u305d\u306e\u305f\u3081\u306e\u524d\u63d0\u6761\u4ef6\u306f\u3001\u540c\u4e00\u306ePostfix\u74b0\u5883\u3067\u3001\u540c\u4e00\u306e <code>\u30e1\u30a4\u30f3CF<\/code> \u305d\u3057\u3066 <code>master.cf<\/code>-\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u308b\u3002DNS\u30a8\u30f3\u30c8\u30ea\u30fc\u306f\u3001\u9045\u5ef6\u3092\u6700\u5c0f\u5316\u3057\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u969c\u5bb3\u30b7\u30ca\u30ea\u30aa\u3092\u7de9\u548c\u3059\u308b\u305f\u3081\u306b\u3001\u8fd1\u304f\u306e\u5834\u6240\u3092\u6307\u3059\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n\n<h2>\u81ea\u52d5\u5316\u3001\u30ed\u30ae\u30f3\u30b0\u3001\u901a\u77e5<\/h2>\n<p>\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30d5\u30ea\u30fc\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u81ea\u52d5\u5316\u304c\u57fa\u672c\u3067\u3059\u3002\u79c1\u306f\u65b0\u3057\u3044\u30e6\u30fc\u30b6\u30fc\u3068\u30a8\u30a4\u30ea\u30a2\u30b9\u3092\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002 <code>\u30dd\u30b9\u30c8\u30de\u30c3\u30d7<\/code> \u307e\u305f\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u30d5\u30a3\u30fc\u30c9\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4f55\u767e\u3082\u306e\u30c9\u30e1\u30a4\u30f3\u304c\u3042\u308b\u30b5\u30fc\u30d0\u30fc\u3067\u306e\u624b\u4f5c\u696d\u306b\u3088\u308b\u30a8\u30e9\u30fc\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30ad\u30e5\u30fc\u8b66\u544a\u306a\u3069\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30e1\u30fc\u30eb\u3092\u7ba1\u7406\u8005\u3084\u76e3\u8996\u30b5\u30fc\u30d3\u30b9\u306b\u76f4\u63a5\u8ee2\u9001\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306f <code>\u30e1\u30fc\u30eb\u30ad\u30e5\u30fc<\/code> \u3092\u7d4c\u7531\u3057\u3066\u30ed\u30b0\u3092\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u3002 <code>logrotate.d<\/code>Postfix\u306e\u30ed\u30b0\u3092\u30af\u30ea\u30a2\u3067\u9577\u6301\u3061\u3055\u305b\u308b\u3002\u91cd\u8981\u306a\u30e1\u30fc\u30eb\u306f\u3001\u624b\u52d5\u3067\u30c1\u30a7\u30c3\u30af\u3059\u308b\u305f\u3081\u306b\u3001\u5b9a\u7fa9\u3055\u308c\u305f\u30ad\u30e3\u30c3\u30c1\u30aa\u30fc\u30eb\u53d7\u4fe1\u30c8\u30ec\u30a4\u306b\u9001\u3089\u308c\u307e\u3059\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\/06\/postfix-konfiguration-2023-5371.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>\u306e\u7d71\u5408 <strong>\u76e3\u8996\u30c4\u30fc\u30eb<\/strong>\u4f8b\u3048\u3070\u3001Prometheus\u30c4\u30fc\u30eb\u3092\u4f7f\u3048\u3070\u3001\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u6570\u3001\u914d\u4fe1\u6642\u9593\u3001\u30a8\u30e9\u30fc\u7387\u306a\u3069\u3001\u6700\u3082\u91cd\u8981\u306a\u6570\u5024\u3092\u7d99\u7d9a\u7684\u306b\u7c21\u5358\u306b\u8a18\u9332\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30a2\u30e9\u30fc\u30e0\u5b9a\u7fa9\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u308b\u3068\u3059\u3050\u306bSlack\u3001\u30e1\u30fc\u30eb\u3001SMS\u3067\u901a\u77e5\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u7a81\u7136\u306e\u30b9\u30d1\u30e0\u91cf\u3084\u6280\u8853\u7684\u306a\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b\u5373\u5ea7\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u7279\u306b\u6709\u52b9\u3067\u3059\u3002<\/p>\n<p>\u3082\u3046\u3072\u3068\u3064\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\u306f <strong>\u6545\u969c\u8a3a\u65ad<\/strong> \u610f\u5473\u306e\u3042\u308b\u30ed\u30b0\u3092\u4ecb\u3057\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d5\u30a3\u30eb\u30bf\u30fc <code>\u30b0\u30ec\u30c3\u30d7<\/code> \u307e\u305f\u306f\u6b21\u306e\u3088\u3046\u306a\u30c4\u30fc\u30eb <code>pflogsumm<\/code>\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u4e0d\u5be9\u306a\u6d3b\u52d5\u3092\u7d20\u65e9\u304f\u8a8d\u8b58\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3088\u308a\u6df1\u304f\u30c7\u30d0\u30c3\u30b0\u3092\u884c\u3044\u305f\u3044\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u30ed\u30b0\u30ec\u30d9\u30eb\u3092\u4e00\u6642\u7684\u306b\u5909\u66f4\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 <code>postconf -e \"debug_peer_level=2\"<\/code> \u304c\u3001\u4e0d\u5fc5\u8981\u306a\u60c5\u5831\u3067\u30b7\u30b9\u30c6\u30e0\u3092\u6ea2\u308c\u3055\u305b\u306a\u3044\u3088\u3046\u306b\u6ce8\u610f\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u554f\u984c\u89e3\u6c7a\u306b\u6210\u529f\u3057\u305f\u3089\u3001\u30c7\u30d0\u30c3\u30b0\u51fa\u529b\u3092\u30ea\u30bb\u30c3\u30c8\u3057\u3066\u3001\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u7121\u99c4\u306e\u306a\u3044\u72b6\u614b\u306b\u4fdd\u3064\u3079\u304d\u3067\u3042\u308b\u3002<\/p>\n\n<h2>\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u56de\u907f\u3057\u3001\u52b9\u7387\u7684\u306b\u4fee\u6b63\u3059\u308b\u3002<\/h2>\n<p>\u3092\u5b9a\u671f\u7684\u306b\u30c6\u30b9\u30c8\u3057\u3066\u3044\u308b\u3002 <strong>\u30e1\u30fc\u30eb\u30eb\u30fc\u30d7<\/strong> \u7570\u306a\u308b\u30c9\u30e1\u30a4\u30f3\u7d4c\u7531\u3067\u81ea\u5206\u81ea\u8eab\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3002\u914d\u4fe1\u304c\u4f55\u5ea6\u3082\u8d77\u3053\u308b\u5834\u5408\u306f\u3001\u305f\u3044\u3066\u3044 <code>\u76ee\u7684\u5730<\/code>-\u8a2d\u5b9a\u307e\u305f\u306fDNS\u306b\u3042\u308b\u3002<\/p>\n<p>TLS\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u3089\u3001\u3059\u3050\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002 <code>\u30dd\u30b9\u30c8\u30d5\u30a3\u30c3\u30af\u30b9\u30c1\u30a7\u30c3\u30af<\/code> \u3067\u3001\u8a3c\u660e\u66f8\u306e\u30d5\u30a1\u30a4\u30eb\u6a29\u9650\u3092\u8868\u793a\u3059\u308b\u3002\u7279\u306b\u591a\u3044\u306e\u306f <code>privkey.pem<\/code> postfix \"\u3067\u306f\u8aad\u3081\u306a\u3044\u3002\u79c1\u306f <code>\u30c1\u30e3\u30a6\u30f3<\/code> \u305d\u3057\u3066 <code>\u30dd\u30b9\u30c8\u30d5\u30a3\u30c3\u30af\u30b9\u518d\u8aad\u307f\u8fbc\u307f<\/code>\u30a8\u30e9\u30fc\u3092\u4fee\u6b63\u3059\u308b\u3002<\/p>\n<p>\u8a8d\u8a3c\u306e\u554f\u984c\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u5834\u5408 <code>\/etc\/postfix\/sasl_passwd<\/code> \u3092\u63a2\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3001\u6a29\u5229\u3001\u305d\u3057\u3066\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u304c <code>\u30dd\u30b9\u30c8\u30de\u30c3\u30d7<\/code> \u306f\u6b63\u3057\u304f\u5909\u63db\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n\n<p>\u307e\u305f\u3001\u6b21\u306e\u3053\u3068\u3082\u91cd\u8981\u3067\u3042\u308b\u3002 <strong>DNS\u304a\u3088\u3073\u9006DNS\u30a8\u30f3\u30c8\u30ea<\/strong> \u3092\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3002\u591a\u304f\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001PTR\u30a8\u30f3\u30c8\u30ea\u304c\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30db\u30b9\u30c8\u540d\u6307\u5b9a\u3092\u6b63\u3057\u304f\u6307\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u30b9\u30d1\u30e0\u306e\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u30de\u30fc\u30af\u3059\u308b\u3002\u6b20\u9665\u306e\u3042\u308b\u30ea\u30d0\u30fc\u30b9DNS\u306f\u3001DKIM\u3068DMARC\u306e\u904b\u7528\u306b\u3082\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3057\u307e\u3059\u3002\u3053\u308c\u3082\u6709\u610f\u7fa9\u306a\u3053\u3068\u3067\u3059\u3001 <code>\u30e1\u30fc\u30eb\u30ad\u30e5\u30fc<\/code> \u6216\u3044\u306f <code>\u30dd\u30b9\u30c8\u30ad\u30e5\u30fc -p<\/code> \u3092\u5b9a\u671f\u7684\u306b\u78ba\u8a8d\u3057\u3001\u30ad\u30e5\u30fc\u306b\u7570\u5e38\u306a\u6570\u306e\u30e1\u30fc\u30eb\u304c\u6e9c\u307e\u3063\u3066\u3044\u306a\u3044\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3001\u4e0d\u6b63\u306aDNS\u8a2d\u5b9a\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30a8\u30e9\u30fc\u3001\u30b9\u30d1\u30e0\u30d5\u30a3\u30eb\u30bf\u30fc\u306e\u8a2d\u5b9a\u30df\u30b9\u306b\u3088\u3063\u3066\u5f15\u304d\u8d77\u3053\u3055\u308c\u308b\u914d\u4fe1\u306e\u554f\u984c\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u6b63\u3057\u3044\u8a2d\u5b9a\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u8005\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3063\u3066\u3057\u307e\u3046\u5834\u5408\u306f\u3001\u81ea\u5206\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u30c9\u30e1\u30a4\u30f3\u3092 <strong>\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8<\/strong> \u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7279\u5225\u306a\u30c4\u30fc\u30eb\u304c\u3042\u308b\u3002 <code>mxtoolbox.com<\/code> (\u8a18\u4e8b\u306e\u65b0\u3057\u3044\u30ea\u30f3\u30af\u3067\u306f\u306a\u304f\u3001\u72ec\u7acb\u3057\u305f\u30b5\u30fc\u30d3\u30b9\u3068\u3057\u3066)\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u304cRBL\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u306e\u60c5\u5831\u3092\u63d0\u4f9b\u3059\u308b\u3002\u5b9a\u671f\u7684\u306a\u30c1\u30a7\u30c3\u30af\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u8a55\u5224\u3092\u7dad\u6301\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002<\/p>\n\n<h2>Postfix\u306b\u3088\u308bWordPress\u3068\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u7d71\u5408<\/h2>\n<p>\u591a\u304f\u306e\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u696d\u8005\u306f\u3001\u30d0\u30c3\u30af\u30b0\u30e9\u30a6\u30f3\u30c9\u3067Postfix\u3092\u4f7f\u3063\u305f\u81ea\u52d5\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306f <strong>webhoster.de<\/strong> Let's Encrypt\u8a3c\u660e\u66f8\u304c\u81ea\u52d5\u7684\u306b\u7d71\u5408\u3055\u308c\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u7c21\u5358\u306b\u5236\u5fa1\u3067\u304d\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u7279\u306b\u30de\u30eb\u30c1\u30b5\u30a4\u30c8\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u306f\u3001Postfix\u3092\u30bb\u30ad\u30e5\u30a2\u30ea\u30ec\u30fc\u7d4c\u7531\u3067\u4f7f\u7528\u3067\u304d\u308b\u305f\u3081\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002API\u3084\u8a2d\u5b9a\u53ef\u80fd\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u30c4\u30fc\u30eb\u3092\u4ecb\u3057\u305f\u63a5\u7d9a\u306f\u3001\u904b\u7528\u3092\u3088\u308a\u7c21\u5358\u306b\u3057\u307e\u3059\u3002<\/p>\n<p>\u8a73\u3057\u304f\u306f\u8a18\u4e8b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%9d%e3%82%b9%e3%83%88%e3%83%95%e3%82%a3%e3%83%83%e3%82%af%e3%82%b9%e5%ae%8c%e5%85%a8%e3%83%95%e3%82%a9%e3%83%af%e3%83%bc%e3%83%89%e3%82%b7%e3%83%bc%e3%82%af%e3%83%ac%e3%83%83%e3%83%88%e3%83%94\/\">Postfix\u306e\u5b8c\u5168\u306a\u524d\u65b9\u79d8\u533f\u6027<\/a>.<\/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\/06\/postfix-advanced-setup-2743.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>WordPress\u74b0\u5883\u3067\u306f\u3001\u300cWP Mail SMTP\u300d\u306e\u3088\u3046\u306a\u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u7528\u3057\u3066\u30e1\u30fc\u30eb\u6a5f\u80fd\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30d7\u30e9\u30b0\u30a4\u30f3\u306fSMTP\u8a2d\u5b9a\u3001\u8a8d\u8a3c\u30c7\u30fc\u30bf\u3001SSL\/TLS\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u76f4\u63a5\u7d71\u5408\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30f3\u30bf\u30af\u30c8\u30d5\u30a9\u30fc\u30e0\u3084\u30b7\u30b9\u30c6\u30e0\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u3001\u8a2d\u5b9a\u3055\u308c\u305fPostfix\u30b5\u30fc\u30d0\u30fc\u3092\u7d4c\u7531\u3057\u3066\u30b9\u30e0\u30fc\u30ba\u304b\u3064\u5b89\u5168\u306b\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u7279\u306b\u30a2\u30af\u30bb\u30b9\u6570\u306e\u591a\u3044\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3067\u306f\u3001\u30e1\u30fc\u30eb\u304cSPAM\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u30bb\u30ad\u30e5\u30a2\u30ea\u30ec\u30fc\u3001\u6b63\u3057\u3044DNS\u30a8\u30f3\u30c8\u30ea\uff08SPF\u3001DKIM\uff09\u3001\u30af\u30ea\u30fc\u30f3\u306aPostfix\u8a2d\u5b9a\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u98a8\u8a55\u88ab\u5bb3\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u81ea\u5206\u306evServer\u3084\u5c02\u7528\u30b5\u30fc\u30d0\u30fc\u3092\u904b\u7528\u3059\u308b\u5834\u5408\u3082\u3001\u81ea\u7531\u304c\u3042\u308a\u307e\u3059\u3001 <strong>\u30c0\u30a4\u30ca\u30df\u30c3\u30afIP\u30a2\u30c9\u30ec\u30b9<\/strong> \u3092\u907f\u3051\u308b\u3079\u304d\u3067\u3042\u308b\u3002\u30af\u30ea\u30fc\u30f3\u306aFix-IP\u30a8\u30ea\u30a2\u306f\u3001\u826f\u3044\u30d7\u30ec\u30fc\u306b\u5927\u304d\u304f\u8ca2\u732e\u3059\u308b\u3002 <em>\u914d\u9054\u53ef\u80fd\u6027<\/em> \u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002webhoster.de\u306e\u3088\u3046\u306a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30fb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3068\u306e\u65e2\u5b58\u306e\u7d71\u5408\u306b\u3088\u308a\u3001\u8a3c\u660e\u66f8\u7ba1\u7406\u3068\u30e1\u30fc\u30eb\u30fb\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u304c\u307b\u307c\u81ea\u52d5\u5316\u3055\u308c\u3001\u30a8\u30e9\u30fc\u306e\u539f\u56e0\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u3001\u7ba1\u7406\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3067\u304d\u308b\u3002<\/p>\n\n<h2>Postfix\u306e\u5229\u7528\u304c\u591a\u3044\u5834\u5408\u306e\u63a8\u5968\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9<\/h2>\n<p>\u751f\u7523\u6027\u306e\u9ad8\u3044\u74b0\u5883\u3067\u8907\u6570\u306e\u30c9\u30e1\u30a4\u30f3\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u8a3c\u660e\u66f8\u3092\u904b\u7528\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u5834\u5408\u3001\u79c1\u306f\u7d71\u5408\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u304f\u308c\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u983c\u3063\u3066\u3044\u308b\u3002\u6b21\u306e\u8868\u306f\u3001\u30c6\u30b9\u30c8\u6e08\u307f\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc3\u793e\u3067\u3042\u308b\uff1a<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u30d7\u30ed\u30d0\u30a4\u30c0<\/th>\n      <th>\u7a7a\u5ba4\u72b6\u6cc1<\/th>\n      <th>\u30b7\u30f3\u30d7\u30eb\u3055<\/th>\n      <th>\u8ffd\u52a0\u6a5f\u80fd<\/th>\n      <th>\u63a8\u85a6<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>webhoster.de<\/td>\n      <td>99,99%<\/td>\n      <td>\u975e\u5e38\u306b\u9ad8\u3044<\/td>\n      <td>\u81ea\u52d5\u5316\u3001WordPress\u3068\u306e\u7d71\u5408\u3001\u30e1\u30fc\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc<\/td>\n      <td>1\u4f4d<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30d7\u30ed\u30d0\u30a4\u30c0\u30fcB<\/td>\n      <td>99,8%<\/td>\n      <td>\u9ad8\u3044<\/td>\n      <td>\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9<\/td>\n      <td>2\u4f4d<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30d7\u30ed\u30d0\u30a4\u30c0\u30fcC<\/td>\n      <td>99,5%<\/td>\n      <td>\u30df\u30c7\u30a3\u30a2\u30e0<\/td>\n      <td>\u5c11\u6570<\/td>\n      <td>3\u4f4d<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\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\/06\/postfix-optimale-konfiguration-3621.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<p>\u7279\u306b\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u3001\u5b8c\u5168\u81ea\u52d5\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3001\u67d4\u8edf\u306a\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u3001\u76e3\u8996\u30b5\u30fc\u30d3\u30b9\u306e\u7d71\u5408\u306f\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u4f1a\u793e\u3092\u9078\u629e\u3059\u308b\u969b\u306e\u6c7a\u5b9a\u7684\u306a\u57fa\u6e96\u306e\u4e00\u3064\u3067\u3059\u3002\u3068 <em>webhoster.de<\/em> \u81ea\u52d5\u8a3c\u660e\u66f8\u7ba1\u7406\u3001API\u30d9\u30fc\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u7ba1\u7406\u3001\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305fDNS\u8a2d\u5b9a\u306a\u3069\u306e\u8ffd\u52a0\u6a5f\u80fd\u306f\u3001\u9867\u5ba2\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3092\u4ecb\u3057\u3066\u4fbf\u5229\u306b\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u983b\u7e41\u306b\u65b0\u3057\u3044\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3084\u96fb\u5b50\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u4f5c\u6210\u3059\u308b\u5834\u5408\u306b\u7279\u306b\u5f79\u7acb\u3061\u3001\u5e38\u306b\u624b\u52d5\u3067\u4ecb\u5165\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u52d5\u7684\u3067\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<p>\u306e\u4e2d\u3067 <strong>\u53ef\u7528\u6027\u306e\u9ad8\u3044Postfix\u74b0\u5883<\/strong> \u307e\u305f\u3001\u5197\u9577\u5316\u3055\u308c\u305f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u3068\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30b3\u30f3\u30bb\u30d7\u30c8\u3082\u5f37\u8abf\u3059\u3079\u304d\u3067\u3059\u3002\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u4e8b\u696d\u8005\u306f\u3001\u30b5\u30fc\u30d3\u30b9\u5168\u4f53\u3092\u4e2d\u65ad\u3059\u308b\u3053\u3068\u306a\u304f\u3001\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u500b\u3005\u306eIP\u30a2\u30c9\u30ec\u30b9\u3084\u30dd\u30fc\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u305f\u308a\u8ee2\u9001\u3057\u305f\u308a\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u9001\u53d7\u4fe1\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8a73\u7d30\u306b\u5236\u5fa1\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001Let's Encrypt\u8a3c\u660e\u66f8\u306e\u81ea\u52d5\u63d0\u4f9b\u306f\u3001\u7279\u306b\u591a\u6570\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b\u5834\u5408\u3001TLS\u8a2d\u5b9a\u3092\u7c21\u7d20\u5316\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u7dcf\u62ec<\/h2>\n<p>\u3067Postfix\u306b\u6163\u308c\u89aa\u3057\u3093\u3067\u3044\u308b\u4eba\u3067\u3042\u308c\u3070\u3001\u8ab0\u3067\u3082\u77e5\u3063\u3066\u3044\u308b\u3002 <strong>\u9ad8\u5ea6\u306a\u8a2d\u5b9a<\/strong> \u306f\u3001\u9ad8\u6027\u80fd\u3067\u30bb\u30ad\u30e5\u30a2\u306a\u30e1\u30fc\u30eb\u74b0\u5883\u306e\u305f\u3081\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u8a2d\u5b9a\u3001\u76e3\u8996\u3001\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u3001\u81ea\u52d5\u5316\u3092\u3046\u307e\u304f\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<p>\u9069\u5207\u306a\u74b0\u5883\u3068webhoster.de\u306e\u3088\u3046\u306a\u4fe1\u983c\u3067\u304d\u308b\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d1\u30fc\u30c8\u30ca\u30fc\u304c\u3042\u308c\u3070\u3001\u4ee3\u7406\u5e97\u3001\u30b7\u30b9\u30c6\u30e0\u30cf\u30a6\u30b9\u3001\u30d3\u30b8\u30cd\u30b9\u30dd\u30fc\u30bf\u30eb\u306a\u3069\u30011\u6642\u9593\u306b\u6570\u5343\u901a\u306e\u30e1\u30fc\u30eb\u3092\u6271\u3046\u3088\u3046\u306a\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30e1\u30fc\u30eb\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3067\u3082\u5b89\u5b9a\u3057\u305f\u904b\u7528\u304c\u53ef\u80fd\u3067\u3059\u3002\u7279\u306b\u3001Postfix\u306e\u304d\u3081\u7d30\u304b\u306a\u5236\u5fa1\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u3001\u9577\u671f\u7684\u306a\u914d\u4fe1\u306e\u4fe1\u983c\u6027\u3068\u72ec\u81ea\u30c9\u30e1\u30a4\u30f3\u306e\u8a55\u5224\u3092\u78ba\u4fdd\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u307e\u305f\u3001\u9ad8\u5ea6\u306a\u76e3\u8996\u30e1\u30ab\u30cb\u30ba\u30e0\u3068\u81ea\u52d5\u5316\u306b\u3088\u308a\u3001\u6f5c\u5728\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ae\u30e3\u30c3\u30d7\u3092\u89e3\u6d88\u3057\u3001\u30b9\u30e0\u30fc\u30ba\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\n\n\u5c06\u6765\u7684\u306a\u8981\u4ef6\u306e\u5897\u52a0\u306b\u5099\u3048\u308b\u305f\u3081\u3001\u5b9a\u671f\u7684\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3092\u898b\u76f4\u3057\u3001\u65b0\u3057\u3044\u6280\u8853\u3092\u7d71\u5408\u3059\u308b\u4fa1\u5024\u304c\u3042\u308a\u307e\u3059\u3002Postfix\u306f\u3001DMARC\u3001DKIM\u3001TLS\u6700\u9069\u5316\u306a\u3069\u306e\u6700\u65b0\u306e\u30b5\u30fc\u30d3\u30b9\u3084\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u5897\u5927\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30b9\u30d4\u30fc\u30c9\u306e\u8981\u4ef6\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306e\u3001\u5b9f\u7e3e\u306e\u3042\u308b\u5c06\u6765\u6027\u306e\u3042\u308b\u57fa\u76e4\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u5411\u3051\u306e\u9ad8\u5ea6\u306aPostfix\u8a2d\u5b9a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002\u30d5\u30a9\u30fc\u30ab\u30b9\uff1a\u4e0a\u7d1a\u8005\u5411\u3051Postfix<\/p>","protected":false},"author":1,"featured_media":11097,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","inline_featured_image":false,"footnotes":""},"categories":[792],"tags":[],"class_list":["post-11104","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-postfix-emailserver-administration-anleitungen"],"acf":[],"_wp_attached_file":null,"_wp_attachment_metadata":null,"litespeed-optimize-size":null,"litespeed-optimize-set":null,"_elementor_source_image_hash":null,"_wp_attachment_image_alt":null,"stockpack_author_name":null,"stockpack_author_url":null,"stockpack_provider":null,"stockpack_image_url":null,"stockpack_license":null,"stockpack_license_url":null,"stockpack_modification":null,"color":null,"original_id":null,"original_url":null,"original_link":null,"unsplash_location":null,"unsplash_sponsor":null,"unsplash_exif":null,"unsplash_attachment_metadata":null,"_elementor_is_screenshot":null,"surfer_file_name":null,"surfer_file_original_url":null,"envato_tk_source_kit":null,"envato_tk_source_index":null,"envato_tk_manifest":null,"envato_tk_folder_name":null,"envato_tk_builder":null,"envato_elements_download_event":null,"_menu_item_type":null,"_menu_item_menu_item_parent":null,"_menu_item_object_id":null,"_menu_item_object":null,"_menu_item_target":null,"_menu_item_classes":null,"_menu_item_xfn":null,"_menu_item_url":null,"_trp_menu_languages":null,"rank_math_primary_category":null,"rank_math_title":null,"inline_featured_image":null,"_yoast_wpseo_primary_category":null,"rank_math_schema_blogposting":null,"rank_math_schema_videoobject":null,"_oembed_049c719bc4a9f89deaead66a7da9fddc":null,"_oembed_time_049c719bc4a9f89deaead66a7da9fddc":null,"_yoast_wpseo_focuskw":null,"_yoast_wpseo_linkdex":null,"_oembed_27e3473bf8bec795fbeb3a9d38489348":null,"_oembed_c3b0f6959478faf92a1f343d8f96b19e":null,"_trp_translated_slug_en_us":null,"_wp_desired_post_slug":null,"_yoast_wpseo_title":null,"tldname":null,"tldpreis":null,"tldrubrik":null,"tldpolicylink":null,"tldsize":null,"tldregistrierungsdauer":null,"tldtransfer":null,"tldwhoisprivacy":null,"tldregistrarchange":null,"tldregistrantchange":null,"tldwhoisupdate":null,"tldnameserverupdate":null,"tlddeletesofort":null,"tlddeleteexpire":null,"tldumlaute":null,"tldrestore":null,"tldsubcategory":null,"tldbildname":null,"tldbildurl":null,"tldclean":null,"tldcategory":null,"tldpolicy":null,"tldbesonderheiten":null,"tld_bedeutung":null,"_oembed_d167040d816d8f94c072940c8009f5f8":null,"_oembed_b0a0fa59ef14f8870da2c63f2027d064":null,"_oembed_4792fa4dfb2a8f09ab950a73b7f313ba":null,"_oembed_33ceb1fe54a8ab775d9410abf699878d":null,"_oembed_fd7014d14d919b45ec004937c0db9335":null,"_oembed_21a029d076783ec3e8042698c351bd7e":null,"_oembed_be5ea8a0c7b18e658f08cc571a909452":null,"_oembed_a9ca7a298b19f9b48ec5914e010294d2":null,"_oembed_f8db6b27d08a2bb1f920e7647808899a":null,"_oembed_168ebde5096e77d8a89326519af9e022":null,"_oembed_cdb76f1b345b42743edfe25481b6f98f":null,"_oembed_87b0613611ae54e86e8864265404b0a1":null,"_oembed_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_oembed_time_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_tldname":null,"_tldclean":null,"_tldpreis":null,"_tldcategory":null,"_tldsubcategory":null,"_tldpolicy":null,"_tldpolicylink":null,"_tldsize":null,"_tldregistrierungsdauer":null,"_tldtransfer":null,"_tldwhoisprivacy":null,"_tldregistrarchange":null,"_tldregistrantchange":null,"_tldwhoisupdate":null,"_tldnameserverupdate":null,"_tlddeletesofort":null,"_tlddeleteexpire":null,"_tldumlaute":null,"_tldrestore":null,"_tldbildname":null,"_tldbildurl":null,"_tld_bedeutung":null,"_tldbesonderheiten":null,"_oembed_ad96e4112edb9f8ffa35731d4098bc6b":null,"_oembed_8357e2b8a2575c74ed5978f262a10126":null,"_oembed_3d5fea5103dd0d22ec5d6a33eff7f863":null,"_eael_widget_elements":null,"_oembed_0d8a206f09633e3d62b95a15a4dd0487":null,"_oembed_time_0d8a206f09633e3d62b95a15a4dd0487":null,"_aioseo_description":null,"_eb_attr":null,"_eb_data_table":null,"_oembed_819a879e7da16dd629cfd15a97334c8a":null,"_oembed_time_819a879e7da16dd629cfd15a97334c8a":null,"_acf_changed":null,"_wpcode_auto_insert":null,"_edit_last":null,"_edit_lock":null,"_oembed_e7b913c6c84084ed9702cb4feb012ddd":null,"_oembed_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_time_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_03514b67990db061d7c4672de26dc514":null,"_oembed_time_03514b67990db061d7c4672de26dc514":null,"rank_math_news_sitemap_robots":null,"rank_math_robots":null,"_eael_post_view_count":"3320","_trp_automatically_translated_slug_ru_ru":null,"_trp_automatically_translated_slug_et":null,"_trp_automatically_translated_slug_lv":null,"_trp_automatically_translated_slug_fr_fr":null,"_trp_automatically_translated_slug_en_us":null,"_wp_old_slug":null,"_trp_automatically_translated_slug_da_dk":null,"_trp_automatically_translated_slug_pl_pl":null,"_trp_automatically_translated_slug_es_es":null,"_trp_automatically_translated_slug_hu_hu":null,"_trp_automatically_translated_slug_fi":null,"_trp_automatically_translated_slug_ja":null,"_trp_automatically_translated_slug_lt_lt":null,"_elementor_edit_mode":null,"_elementor_template_type":null,"_elementor_version":null,"_elementor_pro_version":null,"_wp_page_template":null,"_elementor_page_settings":null,"_elementor_data":null,"_elementor_css":null,"_elementor_conditions":null,"_happyaddons_elements_cache":null,"_oembed_75446120c39305f0da0ccd147f6de9cb":null,"_oembed_time_75446120c39305f0da0ccd147f6de9cb":null,"_oembed_3efb2c3e76a18143e7207993a2a6939a":null,"_oembed_time_3efb2c3e76a18143e7207993a2a6939a":null,"_oembed_59808117857ddf57e478a31d79f76e4d":null,"_oembed_time_59808117857ddf57e478a31d79f76e4d":null,"_oembed_965c5b49aa8d22ce37dfb3bde0268600":null,"_oembed_time_965c5b49aa8d22ce37dfb3bde0268600":null,"_oembed_81002f7ee3604f645db4ebcfd1912acf":null,"_oembed_time_81002f7ee3604f645db4ebcfd1912acf":null,"_elementor_screenshot":null,"_oembed_7ea3429961cf98fa85da9747683af827":null,"_oembed_time_7ea3429961cf98fa85da9747683af827":null,"_elementor_controls_usage":null,"_elementor_page_assets":[],"_elementor_screenshot_failed":null,"theplus_transient_widgets":null,"_eael_custom_js":null,"_wp_old_date":null,"_trp_automatically_translated_slug_it_it":null,"_trp_automatically_translated_slug_pt_pt":null,"_trp_automatically_translated_slug_zh_cn":null,"_trp_automatically_translated_slug_nl_nl":null,"_trp_automatically_translated_slug_pt_br":null,"_trp_automatically_translated_slug_sv_se":null,"rank_math_analytic_object_id":null,"rank_math_internal_links_processed":null,"_trp_automatically_translated_slug_ro_ro":null,"_trp_automatically_translated_slug_sk_sk":null,"_trp_automatically_translated_slug_bg_bg":null,"_trp_automatically_translated_slug_sl_si":null,"litespeed_vpi_list":["webhostinglogo.png"],"litespeed_vpi_list_mobile":["webhostinglogo.png"],"rank_math_seo_score":null,"rank_math_contentai_score":null,"ilj_limitincominglinks":null,"ilj_maxincominglinks":null,"ilj_limitoutgoinglinks":null,"ilj_maxoutgoinglinks":null,"ilj_limitlinksperparagraph":null,"ilj_linksperparagraph":null,"ilj_blacklistdefinition":null,"ilj_linkdefinition":null,"_eb_reusable_block_ids":null,"rank_math_focus_keyword":"Postfix Fortgeschrittene","rank_math_og_content_image":null,"_yoast_wpseo_metadesc":null,"_yoast_wpseo_content_score":null,"_yoast_wpseo_focuskeywords":null,"_yoast_wpseo_keywordsynonyms":null,"_yoast_wpseo_estimated-reading-time-minutes":null,"rank_math_description":null,"surfer_last_post_update":null,"surfer_last_post_update_direction":null,"surfer_keywords":null,"surfer_location":null,"surfer_draft_id":null,"surfer_permalink_hash":null,"surfer_scrape_ready":null,"_thumbnail_id":"11097","footnotes":null,"_links":{"self":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/posts\/11104","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/comments?post=11104"}],"version-history":[{"count":0,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/posts\/11104\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/media\/11097"}],"wp:attachment":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/media?parent=11104"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/categories?post=11104"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/tags?post=11104"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}