{"id":12390,"date":"2025-09-09T08:43:20","date_gmt":"2025-09-09T06:43:20","guid":{"rendered":"https:\/\/webhosting.de\/hetzner-dns-konfiguration-leitfaden-setup-power\/"},"modified":"2025-09-09T08:43:20","modified_gmt":"2025-09-09T06:43:20","slug":"%e3%83%98%e3%83%83%e3%83%84%e3%83%8a%e3%83%bcdns%e3%82%b3%e3%83%b3%e3%83%95%e3%82%a3%e3%82%ae%e3%83%a5%e3%83%ac%e3%83%bc%e3%82%b7%e3%83%a7%e3%83%b3%e3%82%ac%e3%82%a4%e3%83%89%e3%82%bb%e3%83%83","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/hetzner-dns-konfiguration-leitfaden-setup-power\/","title":{"rendered":"\u30d8\u30c3\u30c4\u30ca\u30fcDNS\u8a2d\u5b9a\u3092\u6b63\u3057\u304f\u884c\u3046 - \u30d8\u30c3\u30c4\u30ca\u30fcDNS\u8a2d\u5b9a\u4f8b"},"content":{"rendered":"<p><strong>\u30d8\u30c3\u30c4\u30ca\u30fcDNS\u306e\u8a2d\u5b9a<\/strong> \u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001\u30d8\u30c3\u30c4\u30ca\u30fcDNS\u3067\u5fc5\u8981\u306a\u8a2d\u5b9a\u3001\u8a66\u884c\u932f\u8aa4\u3055\u308c\u305f\u8a2d\u5b9a\u4f8b\u3001\u5b9f\u8df5\u7684\u306a\u30c6\u30b9\u30c8\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f\u3001Hetzner DNS\u3067\u5fc5\u8981\u306a\u8a2d\u5b9a\u3001\u8a66\u884c\u932f\u8aa4\u3092\u91cd\u306d\u305f\u8a2d\u5b9a\u4f8b\u3001\u5b9f\u8df5\u7684\u306a\u30c6\u30b9\u30c8\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u3001\u65e9\u3044\u6bb5\u968e\u3067\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3057\u3001\u30be\u30fc\u30f3\u3092\u30af\u30ea\u30fc\u30f3\u306b\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<p>\u4ee5\u4e0b\u306e\u8981\u70b9\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044DNS\u30be\u30fc\u30f3\u306e\u305f\u3081\u306b\u4f55\u304c\u91cd\u8981\u304b\u3092\u7c21\u5358\u306b\u8aac\u660e\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<ul>\n  <li><strong>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong> \u30ec\u30b8\u30b9\u30c8\u30e9\u306b\u6b63\u3057\u304f\u5165\u529b\u3059\u308b<\/li>\n  <li><strong>A\/AAAA<\/strong> \u30a6\u30a7\u30d6\u7528\u3001 <strong>MX\/TXT<\/strong> \u90f5\u4fbf\u7528<\/li>\n  <li><strong>TTL<\/strong> \u9069\u5207\u306b\u9078\u629e\u3057\u3001\u4f1d\u64ad\u3092\u5f85\u3064<\/li>\n  <li><strong>SPF\/DKIM<\/strong> \u30b9\u30d1\u30e0\u30fb\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u5909\u66f4\u5f8c\u306e\u30c6\u30b9\u30c8<\/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\/09\/hetzner-dns-konfiguration-8271.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>DNS\u306e\u6982\u8981\uff1a\u672c\u5f53\u306b\u5fc5\u8981\u306a\u3082\u306e<\/h2>\n\n<p>\u30c9\u30e1\u30a4\u30f3\u306f <strong>\u8a18\u9332<\/strong> \u30d6\u30e9\u30a6\u30b6\u3084\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u79c1\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u898b\u3064\u3051\u3089\u308c\u308b\u3088\u3046\u306b\u3001\u7279\u5b9a\u306e\u5b9b\u5148\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002A <strong>A\u30ec\u30b3\u30fc\u30c9<\/strong> \u306fIPv4\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u3057\u3001AAAA\u306fIPv6\u3092\u6307\u3057\u3001MX\u306f\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u914d\u4fe1\u3092\u5b9a\u7fa9\u3059\u308b\u3002CNAME\u306f\u5225\u306e\u540d\u524d\u3092\u6307\u3059\u30a8\u30a4\u30ea\u30a2\u30b9\u3092\u5f62\u6210\u3057\u3001TXT\u306f\u4ee5\u4e0b\u306e\u60c5\u5831\u3092\u542b\u3080\u3002 <strong>SPF<\/strong> \u307e\u305f\u306f\u691c\u8a3c\u3002\u30af\u30ea\u30fc\u30f3\u306a\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u306f\u3001\u30e1\u30a4\u30f3\u30c9\u30e1\u30a4\u30f3\u306eA\/AAA\u3001www\u306eCNAME\u3001\u30e1\u30fc\u30eb\u306eMX\u3001SPF-TXT\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30be\u30fc\u30f3\u3092\u30af\u30ea\u30a2\u306b\u4fdd\u3061\u3001\u7d20\u65e9\u304f\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3067\u304d\u3001\u5f8c\u306e\u62e1\u5f35\u306b\u3082\u5bfe\u5fdc\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<h2>\u30d8\u30c3\u30c4\u30ca\u30fcDNS\u30b3\u30f3\u30bd\u30fc\u30eb\u306b\u30c9\u30e1\u30a4\u30f3\u3092\u8ffd\u52a0\u3059\u308b<\/h2>\n\n<p>DNS\u30b3\u30f3\u30bd\u30fc\u30eb\u3067\u3001\u307e\u305a\u65b0\u3057\u3044 <strong>\u30be\u30fc\u30f3<\/strong> \u305d\u3057\u3066\u30c9\u30e1\u30a4\u30f3\u306e\u30b9\u30da\u30eb\u304c\u6b63\u78ba\u306b\u6b63\u3057\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u305d\u308c\u304b\u3089 <strong>\u8a18\u9332<\/strong>\u7279\u5b9a\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u4f5c\u6210\u3057\u305f\u308a\u5909\u66f4\u3057\u305f\u308a\u3067\u304d\u308b\u3088\u3046\u306b\u3002\u30d2\u30f3\u30c8\uff1a\u79c1\u306fIP\u30a2\u30c9\u30ec\u30b9\u3068\u30e1\u30fc\u30eb\u306e\u5b9b\u5148\u3092\u3042\u3089\u304b\u3058\u3081\u30e1\u30e2\u3057\u3066\u304a\u304d\u3001\u4e2d\u65ad\u3059\u308b\u3053\u3068\u306a\u304f\u3059\u3079\u3066\u3092\u5165\u529b\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u5165\u529b\u30df\u30b9\u3092\u9632\u304e\u3001\u843d\u3061\u7740\u3044\u305f\u9806\u5e8f\u3067\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u8a2d\u5b9a\u3067\u304d\u308b\u3002\u30be\u30fc\u30f3\u306e\u6e96\u5099\u304c\u3067\u304d\u6b21\u7b2c\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5909\u66f4\u3068\u305d\u306e\u5f8c\u306e\u30c1\u30a7\u30c3\u30af\u3092\u8a08\u753b\u3059\u308b\u3002<\/p>\n\n<h2>\u30ec\u30b8\u30b9\u30c8\u30e9\u306b\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u6b63\u3057\u304f\u5165\u529b\u3059\u308b\u3002<\/h2>\n\n<p>\u30be\u30fc\u30f3\u3092\u4f5c\u6210\u3057\u305f\u5f8c <strong>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong> \u30d8\u30c3\u30c4\u30ca\u30fc\u793e\u306eDNS\u30b3\u30f3\u30bd\u30fc\u30eb\u3067\u4e00\u5143\u7ba1\u7406\u3067\u304d\u308b\u3002\u901a\u5e38\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u306f <strong>ns1.first-ns.de<\/strong>, <em>robotns2.second-ns.de<\/em> \u305d\u3057\u3066 <em>robotns3.second-ns.com<\/em>..de\u3084.at\u30c9\u30e1\u30a4\u30f3\u306e\u5834\u5408\u3001\u79c1\u306f\u81ea\u5206\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092 <strong>\u30b0\u30eb\u30fc\u30ec\u30b3\u30fc\u30c9<\/strong>\u3067\u3001\u53c2\u7167\u3068IP\u304c\u4fdd\u5b58\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u3053\u306e\u4f5c\u696d\u3092\u884c\u3063\u305f\u3053\u3068\u304c\u306a\u3044\u5834\u5408\u306f\u3001\u30ac\u30a4\u30c9\u306e\u5404\u30b9\u30c6\u30c3\u30d7\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e8%87%aa%e5%88%86%e3%81%ae%e3%83%8d%e3%83%bc%e3%83%a0%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%82%92%e8%a8%ad%e5%ae%9a%e3%81%99%e3%82%8b-dns%e3%82%be%e3%83%bc%e3%83%b3-%e3%83%89%e3%83%a1%e3%82%a4\/\">\u30b0\u30eb\u30fc\u8a18\u9332\u306e\u8a2d\u5b9a<\/a>.\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306f\u4e16\u754c\u4e2d\u3067\u7570\u306a\u308b\u30b9\u30d4\u30fc\u30c9\u3067\u5230\u7740\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u79c1\u306f\u305d\u306e\u5f8c\u3001\u5207\u308a\u66ff\u3048\u306b\u6642\u9593\u304c\u304b\u304b\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\/09\/hetznerdnsmeeting4821.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u8a2d\u5b9a\u4f8b\uff1a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3068\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u5b9f\u884c\u53ef\u80fd\u306b\u3059\u308b<\/h2>\n\n<p>\u5178\u578b\u7684\u306a\u30a6\u30a7\u30d6\u30d7\u30ec\u30bc\u30f3\u30b9\u306b\u306f <strong>A\u30ec\u30b3\u30fc\u30c9<\/strong> \u30eb\u30fc\u30c8\u30c9\u30e1\u30a4\u30f3\u7528\u306eCNAME\u3001www\u7528\u306eCNAME\u3001\u304a\u3088\u3073\u9069\u5207\u306a\u30e1\u30fc\u30eb\u30ec\u30b3\u30fc\u30c9\u3002SPF-TXT\u306f\u3001\u5916\u90e8\u30b5\u30fc\u30d0\u30fc\u304c\u30c9\u30e1\u30a4\u30f3\u540d\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3057\u3066\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u304c\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u5408\u3001AAAA\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002 <strong>\u30a2\u30a4\u30d4\u30fc\u30d6\u30a4\u30b7\u30c3\u30af\u30b9<\/strong> \u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002ForwardMX\u306e\u3088\u3046\u306a\u5916\u90e8\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306b\u3064\u3044\u3066\u306f\u3001MX\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3057\u3066\u305d\u306e\u4ed5\u69d8\u3092\u4fdd\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u6b21\u306e\u8868\u306f\u3001\u591a\u304f\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u78ba\u304b\u306a\u51fa\u767a\u70b9\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th><strong>\u540d\u79f0<\/strong><\/th>\n      <th><strong>\u30bf\u30a4\u30d7<\/strong><\/th>\n      <th><strong>\u4fa1\u5024<\/strong><\/th>\n      <th><strong>\u30d2\u30f3\u30c8<\/strong><\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>@<\/td>\n      <td>A<\/td>\n      <td>195.201.210.43<\/td>\n      <td>\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc IPv4<\/td>\n    <\/tr>\n    <tr>\n      <td>@<\/td>\n      <td>AAAA<\/td>\n      <td>\u30aa\u30d7\u30b7\u30e7\u30f3\uff1a2a01:4f8:xxxx:xxxx::1<\/td>\n      <td>\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc IPv6<\/td>\n    <\/tr>\n    <tr>\n      <td>www<\/td>\n      <td>CNAME<\/td>\n      <td>@<\/td>\n      <td>\u30eb\u30fc\u30c8\u4e0a\u306e\u30a8\u30a4\u30ea\u30a2\u30b9<\/td>\n    <\/tr>\n    <tr>\n      <td>@<\/td>\n      <td>MX<\/td>\n      <td>mx1.forwardmx.net<\/td>\n      <td>\u30d7\u30ea\u30aa10<\/td>\n    <\/tr>\n    <tr>\n      <td>@<\/td>\n      <td>TXT<\/td>\n      <td>\"v=spf1 include:_spf.forwardmx.net -all\"<\/td>\n      <td>\u306a\u308a\u3059\u307e\u3057\u306b\u5bfe\u3059\u308bSPF<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>DNSSEC\u306e\u6709\u52b9\u5316\u3068DS\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a<\/h2>\n<p>\u64cd\u4f5c\u306e\u5b89\u5168\u6027\u304c\u79c1\u306b\u3068\u3063\u3066\u91cd\u8981\u3067\u3042\u308b\u306a\u3089\u3001\u79c1\u306f\u305d\u308c\u3092\u6709\u52b9\u306b\u3059\u308b\u3002 <strong>\u30c7\u30a3\u30ca\u30bb\u30c3\u30af<\/strong> \u30be\u30fc\u30f3\u306e\u305f\u3081\u306e\u7f72\u540d\u9375\u3092\u751f\u6210\u3059\u308b\u3002\u30d8\u30c3\u30c4\u30ca\u30fc\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u3067\u3001\u3053\u306e\u305f\u3081\u306e\u7f72\u540d\u30ad\u30fc\u3092\u751f\u6210\u3057\u3001\u5fc5\u8981\u306a <strong>DS\u30c7\u30fc\u30bf<\/strong>\u3053\u308c\u3092\u30ec\u30b8\u30b9\u30c8\u30e9\u306b\u9810\u3051\u308b\u3002\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u304c\u6b63\u3057\u304f\u8ee2\u9001\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002\u305d\u306e\u5f8c\u3001\u30ec\u30b8\u30b9\u30c8\u30e9\u304b\u3089\u30be\u30fc\u30f3\u3078\u306e\u30c1\u30a7\u30fc\u30f3\u304c\u6b63\u3057\u304f\u691c\u8a3c\u3055\u308c\u308b\u307e\u3067 \u5f85\u3064\u3002\u4e3b\u8981\u306a\u9375\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u524d\u306b\u3001\u79c1\u306fTTL\u3092\u4e0b\u3052\u3001\u30ea\u30be\u30eb\u30d0\u304c\u65b0\u3057\u3044\u7f72\u540d\u3092 \u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u6642\u9593\u7684\u4f59\u88d5\u3092\u8a08\u753b\u3059\u308b\u3002\u91cd\u8981: \u5909\u66f4\u4e2d\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u53d7\u4fe1\u8005\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u306f\u5931\u6557\u3059\u308b\u3002<\/p>\n\n<h2>TTL\u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3057\u3001\u4f1d\u642c\u3092\u7406\u89e3\u3059\u308b<\/h2>\n\n<p>\u4edd <strong>TTL<\/strong> \u306f\u3001\u30ea\u30be\u30eb\u30d0\u304c\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u6642\u9593\u3092\u6c7a\u5b9a\u3059\u308b\u3002\u5909\u63db\u306e\u5834\u5408\u306f\u3001\u77ed\u3044 <strong>TTL<\/strong> (\u4f8b\u3048\u3070300\u79d2\uff09\u3002\u6700\u7d42\u7684\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u5f8c\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u7bc0\u7d04\u3057\u3001\u4e00\u8cab\u3057\u305f\u89e3\u50cf\u5ea6\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u79c1\u306f\u518d\u3073\u5024\u3092\u5897\u3084\u3057\u307e\u3059\u3002\u983b\u7e41\u306b\u30c7\u30d7\u30ed\u30a4\u3059\u308b\u4eba\u306f600-1200\u79d2\u306b\u3053\u3060\u308f\u308a\u3001\u3081\u3063\u305f\u306b\u5909\u66f4\u3092\u52a0\u3048\u306a\u3044\u4eba\u306f3600-14400\u79d2\u3092\u4f7f\u3046\u3002 \u3053\u306e\u6c7a\u5b9a\u306b\u95a2\u3059\u308b\u5b9f\u7528\u7684\u306a\u6982\u8981\u306f\u3001\u79c1\u304c\u884c\u3063\u305f <a href=\"https:\/\/webhosting.de\/ja\/dns-ttl%e6%80%a7%e8%83%bd%e6%af%94%e8%bc%83-%e6%9c%80%e9%81%a9%e3%83%95%e3%83%a9%e3%83%83%e3%82%af%e3%82%b9\/\">\u6700\u9069\u306aTTL\u9078\u629e<\/a>.<\/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\/09\/hetzner-dns-einstellungen-guide-4829.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30a8\u30a4\u30da\u30c3\u30af\u30b9\u30fb\u30c9\u30e1\u30a4\u30f3\u3001CAA\u3001\u8a3c\u660e\u66f8\u3092\u7ba1\u7406<\/h2>\n<p>\u306eSaaS\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u5834\u5408 <strong>\u30be\u30fc\u30f3\u30fb\u30a8\u30a4\u30da\u30c3\u30af\u30b9<\/strong> \u79c1\u306f\u305d\u308c\u3092\u899a\u3048\u3066\u3044\u308b\u3002 <em>CNAME<\/em> \u306f\u8a31\u53ef\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u3001\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306eA\/AAAA\u3092\u4f7f\u7528\u3059\u308b\u304b\u3001\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u30fb\u30ec\u30d9\u30eb\u3067www\u3078\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u8a3c\u660e\u66f8\u306e\u5272\u308a\u5f53\u3066\u306b\u3064\u3044\u3066\u306f <strong>CAA\u30ec\u30b3\u30fc\u30c9<\/strong>\u3069\u306eCA\u304c\u8a3c\u660e\u66f8\u3092\u767a\u884c\u3059\u308b\u6a29\u9650\u3092\u6301\u3064\u304b\u3002\u4f8b\u3048\u3070\u3001\u79c1\u306f\u5b9f\u969b\u306b\u4f7f\u7528\u3059\u308bCA\u3060\u3051\u3092\u7ba1\u7406\u3057\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u5831\u544a\u7528\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u8ffd\u52a0\u3057\u3066\u3044\u308b\u3002CA\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u306f\u3001\u767a\u884c\u524d\u306bTTL\u3092\u7c21\u5358\u306b\u5897\u3084\u3057\u3001CAA\u3092\u66f4\u65b0\u3059\u308b\u3002ACME DNS-01\u7d4c\u7531\u306e\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002 <em>\u30a2\u30af\u30e1\u30fb\u30c1\u30e3\u30ec\u30f3\u30b8<\/em> \u3092\u7d20\u65e9\u304f\u8a2d\u5b9a\u3057\u3001\u53e4\u3044\u8ab2\u984c\u3092\u6b8b\u3055\u306a\u3044\u3088\u3046\u306b\u81ea\u52d5\u7684\u306b\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n<h2>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3068\u30b5\u30fc\u30d3\u30b9\u3092\u304d\u308c\u3044\u306b\u4f5c\u6210\u3059\u308b<\/h2>\n\n<p>\u5404\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u9069\u5207\u306a <strong>A<\/strong>- \u307e\u305f\u306f <strong>CNAME<\/strong>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u304cIP\u3092\u76f4\u63a5\u6307\u3059\u304b\u3001\u540d\u524d\u3092\u6307\u3059\u304b\u306b\u5fdc\u3058\u3066\u3001-record\u3092\u6307\u5b9a\u3059\u308b\u3002\u4f8b\uff1ablog.example.de\u306f\u30d6\u30ed\u30b0VM\u3078\u306eA\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u3001cdn.example.de\u306fCDN\u540d\u3078\u306eCNAME\u3068\u3057\u3066\u3002API\u306b\u3064\u3044\u3066\u306f\u3001\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u5185\u90e8\u540d\u3068\u516c\u958b\u540d\u3092\u53b3\u5bc6\u306b\u533a\u5225\u3057\u3066\u3044\u308b\u3002api\u3001app\u3001img\u3068\u3044\u3063\u305f\u6a19\u6e96\u5316\u3055\u308c\u305f\u540d\u524d\u306f\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3068\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u30be\u30fc\u30f3\u3092\u69cb\u9020\u5316\u3057\u3001\u5909\u66f4\u3092\u660e\u78ba\u306b\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<h2>\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3001SRV\u3001\u7279\u6b8a\u30ec\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7<\/h2>\n<p>\u79c1\u306f\u3053\u3046\u3057\u3066\u3044\u308b\u3002 <strong>\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u30fb\u30ec\u30b3\u30fc\u30c9<\/strong> (*.example.de)\u3001\u4f8b\u3048\u3070\u30de\u30eb\u30c1\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5bfe\u5fdc\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u5834\u5408\u3002\u30ef\u30a4\u30eb\u30c9\u30ab\u30fc\u30c9\u3088\u308a\u3082\u6b63\u78ba\u306a\u30a8\u30f3\u30c8\u30ea\u30fc\u304c\u5e38\u306b\u512a\u5148\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002SIP\u3001Matrix\u3001Autodiscover\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u306e\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u4f5c\u6210\u3057\u307e\u3059\u3002 <strong>SRV\u30ec\u30b3\u30fc\u30c9<\/strong> \u305d\u3057\u3066\u3001\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u512a\u5148\u9806\u4f4d\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002 <strong>TXT\u30ec\u30b3\u30fc\u30c9<\/strong> \u9577\u3044\u5185\u5bb9\u306e\u3082\u306e\uff08\u305f\u3068\u3048\u30702048\u30d3\u30c3\u30c8\u306eDKIM\uff09\u306f\u3001\u30d1\u30fc\u30b5\u304c\u6b63\u3057\u304f\u30de\u30fc\u30b8\u3067\u304d\u308b\u3088\u3046\u306b\u3001\u3044\u304f\u3064\u304b\u306e\u5f15\u7528\u30bb\u30b0\u30e1\u30f3\u30c8\u306b\u5206\u5272\u3055\u308c\u308b\u3002\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u5236\u9650\u3092\u7834\u3089\u306a\u3044\u3088\u3046\u306b\u3001\u8907\u6570\u306eSPF\u30ec\u30b3\u30fc\u30c9\u3092\u907f\u3051\u3001\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u6709\u52b9\u306aSPF\u306b\u307e\u3068\u3081\u308b\u3002<\/p>\n\n<h2>\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u96fb\u5b50\u30e1\u30fc\u30eb\u914d\u4fe1SPF\u3001DKIM\u3001DMARC<\/h2>\n\n<p>\u4fe1\u983c\u3067\u304d\u308b\u96fb\u5b50\u30e1\u30fc\u30eb\u306b\u306f <strong>MX<\/strong> \u79c1\u306e\u9001\u4fe1\u30b7\u30b9\u30c6\u30e0\u3092\u30ab\u30d0\u30fc\u3059\u308b\u30af\u30ea\u30fc\u30f3\u306aSPF-TXT\u3002\u307e\u305f <strong>\u30c7\u30a3\u30fc\u30b1\u30fc\u30a2\u30a4\u30a8\u30e0<\/strong> \u3067DKIM\u30bb\u30ec\u30af\u30bf\u3092TXT\u3068\u3057\u3066selector._domainkey\u306e\u4e0b\u306b\u516c\u958b\u3057\u307e\u3059\u3002\u79c1\u306fDMARC\u3092\u4f7f\u3063\u3066\u3001SPF\/DKIM\u3092\u901a\u3089\u306a\u3044\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u8005\u304c\u3069\u3046\u6271\u3046\u304b\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u79c1\u306f\u3088\u304f \"p=none \"\u304b\u3089\u59cb\u3081\u3066\u3001\u30ec\u30dd\u30fc\u30c8\u3092\u8a55\u4fa1\u3057\u3001\u5f8c\u3067 \"quarantine \"\u304b \"reject \"\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002\u3053\u306e\u9806\u5e8f\u3067\u30ea\u30b9\u30af\u3092\u6e1b\u3089\u3057\u3001\u914d\u4fe1\u54c1\u8cea\u3092\u5f90\u3005\u306b\u9ad8\u3081\u3066\u3044\u304d\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\/09\/hetzner_dns_config_8452.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>SPF\/DKIM\/DMARC\u306e\u5b9f\u8df5\u3092\u6df1\u3081\u308b<\/h2>\n<p>SPF\u306f\u5fc5\u8981\u306a\u3082\u306e\u3060\u3051\u306b\u3057\u3066\u3044\u308b\u3002 <em>\u542b\u3080<\/em>-\u307e\u305f\u3001\u30db\u30b9\u30c8\u540d1\u3064\u306b\u3064\u304dSPF\u30921\u3064\u4ee5\u4e0a\u4f7f\u7528\u3059\u308b\u3053\u3068\u306f\u306a\u3044\u3002DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306e10\u56de\u5236\u9650\u3092\u9075\u5b88\u3059\u308b\u305f\u3081\u306b\u3001\u30c1\u30a7\u30fc\u30f3\u3092\u6e1b\u3089\u3059\u304b\u3001\u5b89\u5b9a\u3057\u3066\u3044\u308c\u3070IP4\/IP6\u30e1\u30ab\u30cb\u30ba\u30e0\u3092\u4f7f\u3046\u3002\u4ee5\u4e0b\u306f\u305d\u306e\u4f8b\u3067\u3042\u308b\u3002 <strong>DKIM\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3<\/strong> \u79c1\u306f2\u3064\u306e\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30bb\u30ec\u30af\u30bf\uff08\u65b0\u65e7\uff09\u3092\u64cd\u4f5c\u3057\u3001\u65b0\u3057\u3044\u30ad\u30fc\u3092\u516c\u958b\u3057\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u5207\u308a\u66ff\u3048\u3001\u6570\u65e5\u5f8c\u306b\u53e4\u3044\u65b9\u3060\u3051\u3092\u524a\u9664\u3059\u308b\u3002\u3068 <strong>\uff24\uff2d\uff21\uff32\uff23<\/strong> \u79c1\u306f\u6700\u521d\u306b\u5831\u544a\u30a2\u30c9\u30ec\u30b9\uff08rua\/ruf\uff09\u3092\u8a2d\u5b9a\u3057\u3001\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\uff08aspf\/adkim\uff09\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u306f <em>sp=<\/em> \u5225\u3005\u306b\u9001\u4fe1\u3059\u308b\u5834\u5408\u306f\u3001\u5225\u306e\u30dd\u30ea\u30b7\u30fc\u3092\u5b9a\u7fa9\u3059\u308b\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u601d\u3044\u8fbc\u307f\u3067\u306f\u306a\u304f\u3001\u5b9f\u969b\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30c7\u30fc\u30bf\u306b\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n<h2>\u30af\u30ea\u30fc\u30f3\u306a\u30e1\u30fc\u30eb\u914d\u4fe1\u306e\u305f\u3081\u306e\u30ea\u30d0\u30fc\u30b9DNS\uff08PTR\uff09<\/h2>\n<p>MX\u3001SPF\u3001DKIM\u306b\u52a0\u3048\u3066\u3001\u79c1\u306f\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002 <strong>\u30ea\u30d0\u30fc\u30b9DNS<\/strong> (PTR)\u3092\u4f7f\u7528\u3059\u308b\u3002IP\u306ePTR\u306f\u30db\u30b9\u30c8\u540d\u3092\u6307\u3057\u3001\u305d\u306e\u30db\u30b9\u30c8\u540d\u306fA\/AA\u3092\u4ecb\u3057\u3066\u540c\u3058IP\u306b\u6b63\u3057\u304f\u89e3\u6c7a\u3055\u308c\u308b(<em>\u30d5\u30a9\u30ef\u30fc\u30c9\uff0f\u30ea\u30d0\u30fc\u30b9\u30fb\u30de\u30c3\u30c1<\/em>).\u79c1\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306e\u30be\u30fc\u30f3\u7ba1\u7406\u3067\u306f\u306a\u304f\u3001IP\u6240\u6709\u8005\u3068\u76f4\u63a5IP\u3054\u3068\u306bPTR\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002IPv6\u306b\u306f\u30cb\u30d6\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u9069\u5207\u306aPTR\u306f\u30b9\u30d1\u30e0\u5206\u985e\u3092\u6e1b\u3089\u3057\u3001\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30e1\u30fc\u30eb\u304c\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u3092\u7d4c\u7531\u3059\u308b\u5834\u5408\u3001\u79c1\u306f\u305d\u306ePTR\u3092\u305d\u306e\u307e\u307e\u306b\u3057\u3066\u304a\u304d\u3001SPF\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u305b\u305a\u306b\u9001\u4fe1\u5143\u304c\u6df7\u5728\u3057\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u5178\u578b\u7684\u306a\u30a8\u30e9\u30fc\u3068\u8fc5\u901f\u306a\u89e3\u6c7a\u7b56<\/h2>\n\n<p>\u30c9\u30e1\u30a4\u30f3\u304c\u89e3\u6c7a\u3057\u306a\u3044\u5834\u5408\u3001\u79c1\u306f\u6700\u521d\u306b\u6b21\u306e\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3002 <strong>TTL<\/strong>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u3068\u30ec\u30b3\u30fc\u30c9\u306e\u6b63\u3057\u3044\u30b9\u30da\u30eb\u30022\u3064\u76ee\u306f <strong>\u4f1d\u64ad<\/strong>\u30ea\u30be\u30eb\u30d0\u306b\u3088\u3063\u3066\u306f\u3001\u7279\u306bTTL\u304c\u5897\u52a0\u3057\u305f\u5f8c\u306b\u3001\u3088\u308a\u9577\u304f\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3082\u306e\u3082\u3042\u308b\u3002\u79c1\u306f\u3001\u5730\u57df\u5dee\u3092\u8a8d\u8b58\u3059\u308b\u305f\u3081\u306b\u3001\u3055\u307e\u3056\u307e\u306aDNS\u30c1\u30a7\u30c3\u30ab\u30fc\u3092\u4f7f\u3063\u3066\u89e3\u50cf\u5ea6\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u30ed\u30fc\u30ab\u30eb\u3067\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u4e00\u6642\u7684\u306b1.1.1.1\u30848.8.8.8\u306a\u3069\u306e\u30d1\u30d6\u30ea\u30c3\u30af\u30ea\u30be\u30eb\u30d0\u306b\u5207\u308a\u66ff\u3048\u307e\u3059\u3002\u30a8\u30e9\u30fc\u304c\u5185\u90e8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306e\u307f\u767a\u751f\u3059\u308b\u5834\u5408\u306f\u3001\u5185\u90e8\u30ea\u30be\u30eb\u30d0\u3068\u30b3\u30f3\u30c6\u30ca\u3001Kubernetes\u3001CoreDNS\u8a2d\u5b9a\u306e\u30eb\u30fc\u30eb\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/p>\n\n<h2>\u30c6\u30b9\u30c8\u65b9\u6cd5\uff1adig\u3001nslookup\u3001end-to-end<\/h2>\n<p>\u30ec\u30b3\u30fc\u30c9\u3060\u3051\u3092\u30c6\u30b9\u30c8\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30d1\u30b9\u5168\u4f53\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3093\u3060\uff1a<\/p>\n<ul>\n  <li><strong>\u6398\u308b<\/strong> A\/AAA\/CNAME\/MX\/TXT\uff1a\u30ec\u30b9\u30dd\u30f3\u30b9\u3001TTL\u3001\u6a29\u9650\u306e\u30c1\u30a7\u30c3\u30af<\/li>\n  <li><strong>\u30c7\u30a3\u30b0\uff0b\u30c8\u30ec\u30fc\u30b9<\/strong>\u30c7\u30ea\u30b2\u30fc\u30b7\u30e7\u30f3\u30c1\u30a7\u30fc\u30f3\u3068\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u52d5\u4f5c\u3092\u53c2\u7167<\/li>\n  <li><strong>SMTP\u30c6\u30b9\u30c8<\/strong>HELO\/EHLO\u3001TLS\u3001\u30d0\u30ca\u30fc\u306e\u30c1\u30a7\u30c3\u30af<\/li>\n  <li><strong>HTTPS \u30ea\u30a2\u30eb<\/strong>\u8a3c\u660e\u66f8\u30c1\u30a7\u30fc\u30f3\u3001\u30db\u30b9\u30c8\u540d\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/li>\n<\/ul>\n<p>\u3053\u306e\u65b9\u6cd5\u3067\u3001\u4e0d\u6b63\u306a\u30d0\u30fc\u30c1\u30e3\u30eb\u30db\u30b9\u30c8\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u3084\u671f\u9650\u5207\u308c\u306e\u8a3c\u660e\u66f8\u306a\u3069\u3001\u7d14\u7c8b\u306aDNS\u30ec\u30b9\u30dd\u30f3\u30b9\u3067\u306f\u898b\u3048\u306a\u3044\u30a8\u30e9\u30fc\u3082\u8a8d\u8b58\u3057\u307e\u3059\u3002\u5909\u66f4\u3092\u52a0\u3048\u305f\u5f8c\u3001\u6700\u7d42\u7684\u306a\u7d50\u8ad6\u3092\u51fa\u3059\u524d\u306b\u5c11\u306a\u304f\u3068\u30821\u56de\u306eTTL\u3092\u5f85\u3061\u307e\u3059\u3002<\/p>\n\n<h2>\u30d8\u30c3\u30c4\u30ca\u30fc\u306e\u30b3\u30f3\u30bd\u30fc\u30eb\u3067\u52b9\u7387\u7684\u306b\u4f5c\u696d<\/h2>\n\n<p>\u95a2\u9023\u3059\u308b\u3082\u306e\u3092\u307e\u3068\u3081\u308b <strong>\u30a8\u30f3\u30c8\u30ea\u30fc<\/strong> \u6642\u9593\u3092\u304b\u3051\u3001\u5927\u304d\u306a\u5909\u66f4\u3092\u52a0\u3048\u308b\u524d\u306b\u77ed\u3044TTL\u3092\u8a2d\u5b9a\u3057\u3001\u3059\u3079\u3066\u3092\u4e00\u5ea6\u306b\u516c\u958b\u3059\u308b\u3002\u4fdd\u5b58\u3059\u308b\u524d\u306b\u3001\u3082\u3046\u4e00\u5ea6\u30c1\u30a7\u30c3\u30af\u3059\u308b <strong>MX<\/strong>-\u512a\u5148\u9806\u4f4d\u3001SPF\u69cb\u6587\u3001A\u30ec\u30b3\u30fc\u30c9\u306e\u30bf\u30fc\u30b2\u30c3\u30c8IP\u3002\u30b5\u30fc\u30d0\u30fc\u306e\u7ba1\u7406\u304a\u3088\u3073\u51e6\u7406\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30f3\u30d1\u30af\u30c8\u306a\u8aac\u660e\u66f8\u3092\u53c2\u7167\u3055\u308c\u305f\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%98%e3%83%83%e3%83%84%e3%83%8a%e3%83%bc%e3%83%bb%e3%83%ad%e3%83%9c%e3%83%83%e3%83%88%e3%83%bb%e3%82%b5%e3%83%bc%e3%83%95%e3%82%a7%e3%82%b9%e3%83%bb%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e7%ae%a1\/\">\u30d8\u30c3\u30c4\u30ca\u30fc\u30fb\u30ed\u30dc\u30c3\u30c8\u306e\u30d2\u30f3\u30c8<\/a>.\u30c7\u30d7\u30ed\u30a4\u5f8c\u306f\u3001http\u3001https\u3001\u30e1\u30fc\u30eb\u3092ping\u3060\u3051\u3067\u306a\u304f\u3001\u5b9f\u969b\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u30c6\u30b9\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u7d14\u7c8b\u306aDNS\u30af\u30a8\u30ea\u3067\u306f\u8868\u793a\u3055\u308c\u306a\u3044\u30a8\u30e9\u30fc\u3092\u8a8d\u8b58\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 loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/09\/hetzner_dns_setup_arbeitsplatz_3842.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u81ea\u52d5\u5316\uff1aAPI\u3001\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3001ACME<\/h2>\n<p>\u79c1\u306f\u81ea\u52d5\u5316\u306b\u3088\u3063\u3066\u6642\u9593\u3092\u7bc0\u7d04\u3057\u3066\u3044\u308b\u3002\u901a\u5e38\u306e\u30c7\u30d7\u30ed\u30a4\u306b\u306f <strong>API<\/strong> DNS\u30b3\u30f3\u30bd\u30fc\u30eb\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3001\u5909\u66f4\u3001\u307e\u305f\u306f\u524a\u9664\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u7e70\u308a\u8fd4\u3055\u308c\u308b\u30d1\u30bf\u30fc\u30f3\uff08\u4f8b\uff1aWeb + Mail + DMARC\uff09\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u4f5c\u696d\u3057\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u56fa\u6709\u306e\u5024\u306e\u307f\u3092\u633f\u5165\u3057\u307e\u3059\u3002Let's Encrypt DNS-01\u306b\u3064\u3044\u3066\u306f\u3001\u81ea\u52d5TXT\u30ec\u30b3\u30fc\u30c9\u30e9\u30a4\u30bf\u30fc\u3092\u7d44\u307f\u8fbc\u307f\u3001\u66f4\u65b0\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u7d71\u5408\u3057\u3066\u3044\u307e\u3059\u3002\u91cd\u8981\uff1a\u79c1\u306fAPI\u30c8\u30fc\u30af\u30f3\u3092\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u3088\u3046\u306b\u6271\u3044\u3001\u7279\u5b9a\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5272\u308a\u5f53\u3066\u3001\u4e0d\u8981\u306b\u306a\u3063\u305f\u3089\u30a2\u30af\u30bb\u30b9\u3092\u53d6\u308a\u6d88\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u9ad8\u5ea6\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\uff1a\u30b9\u30d7\u30ea\u30c3\u30c8\u30fb\u30db\u30e9\u30a4\u30be\u30f3\u3001CDN\u3001ACME<\/h2>\n\n<p>\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u5185\u90e8\u30e6\u30fc\u30b6\u30fc\u3068\u5916\u90e8\u30e6\u30fc\u30b6\u30fc\u3092\u5206\u3051\u308b <strong>DNS<\/strong>-\u5185\u90e8\u30a2\u30d7\u30ea\u304c\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8IP\u3092\u6307\u3057\u3001\u30d3\u30b8\u30bf\u30fc\u304c\u30d1\u30d6\u30ea\u30c3\u30af\u5b9b\u5148\u3092\u6307\u3059\u3088\u3046\u306b\u3002\u3053\u306e\u5834\u5408 <strong>\u30b7\u30fc\u30c7\u30a3\u30fc\u30a8\u30cc<\/strong>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092CNAME\u7d4c\u7531\u3067CDN\u540d\u306b\u53c2\u7167\u3057\u3001\u305d\u3053\u3067TLS\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u308b\u3002ACME\/Let's Encrypt\u7d4c\u7531\u306e\u81ea\u52d5\u8a3c\u660e\u66f8\u306b\u3064\u3044\u3066\u306f\u3001HTTP-01\u304c\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001\u30aa\u30d7\u30b7\u30e7\u30f3\u3067TXT\u7d4c\u7531\u3067DNS-01\u30c1\u30e3\u30ec\u30f3\u30b8\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u3002\u66f4\u65b0\u304c\u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u884c\u308f\u308c\u308b\u3088\u3046\u306b\u3001\u3053\u3053\u3067\u306f\u81ea\u52d5\u5316\u304c\u91cd\u8981\u3060\u3002\u30ed\u30b0\u3068\u901a\u77e5\u306f\u3001\u5931\u6557\u3092\u9069\u6642\u306b\u8a8d\u8b58\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3002<\/p>\n\n<h2>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u53ef\u7528\u6027\u306e\u30d1\u30bf\u30fc\u30f3<\/h2>\n<p>\u79c1\u306f\u5358\u7d14\u306a\u624b\u6bb5\u3067\u7a3c\u50cd\u7387\u3092\u9ad8\u3081\u3066\u3044\u308b\uff1a\u3044\u304f\u3064\u304b\u306e <strong>A\/AAA\u306e\u8a18\u9332<\/strong> (\u30e9\u30a6\u30f3\u30c9\u30ed\u30d3\u30f3)\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u304c\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u304b\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u5171\u6709\u3057\u3066\u3044\u308c\u3070\u3001\u8ffd\u52a0\u30b5\u30fc\u30d3\u30b9\u306a\u3057\u3067\u8ca0\u8377\u3092\u5171\u6709\u3067\u304d\u308b\u3002\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u306e\u969b\u306b\u306f\u3001\u4e00\u6642\u7684\u306b\u500b\u3005\u306eIP\u3092\u524a\u9664\u3057\u3001\u518d\u5ea6\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u7acb\u3061\u4e0a\u3052\u307e\u3059\u3002\u77ed\u3059\u304e\u308bTTL\u306e\u5b9f\u884c\u306f\u30ea\u30be\u30eb\u30d0\u306b\u8ca0\u62c5\u3092\u304b\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u79c1\u306f\u5fdc\u7b54\u901f\u5ea6\u3068\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u7387\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u898b\u3064\u3051\u308b\u3002\u79c1\u306f\u3001\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u306a\u3057\u3067\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3059\u308b\u305f\u3081\u306e\u30af\u30ea\u30a2\u30d7\u30ed\u30bb\u30b9\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u308b\uff1a\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u79c1\u306f\u30a8\u30f3\u30c8\u30ea\u30fc\u3092\u5165\u308c\u66ff\u3048\u3001\u7a4d\u6975\u7684\u306b\u76e3\u8996\u3057\u3001\u5fa9\u65e7\u5f8c\u306b\u518d\u3073\u30ea\u30bb\u30c3\u30c8\u3059\u308b\u3002<\/p>\n\n<h2>\u5b89\u5168\u6027\u3068\u30be\u30fc\u30f3\u885b\u751f<\/h2>\n<p>\u4e0d\u8981\u306a\u3082\u306e\u306f\u4f7f\u308f\u306a\u3044 <strong>\u30be\u30fc\u30f3\u79fb\u52d5<\/strong> (AXFR\uff09\u306e\u307f\u3092\u516c\u958b\u3059\u308b\u3002 <strong>NS<\/strong>\u771f\u306b\u6a29\u5a01\u306e\u3042\u308b\u3082\u306e\u79c1\u306f\u3001\u53e4\u3044\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3084\u5b64\u5150\u3068\u306a\u3063\u305f\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u5b9a\u671f\u7684\u306b\u524a\u9664\u3057\u3001\u30b7\u30e3\u30c9\u30a6\u30fb\u30b5\u30fc\u30d5\u30a7\u30b9\u3092\u4f5c\u3089\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002IDN\u306b\u3064\u3044\u3066\u306f <strong>\u30d4\u30e5\u30cb\u30b3\u30fc\u30c9<\/strong>-\u30b9\u30da\u30eb\u30df\u30b9\u3084\u7279\u6b8a\u6587\u5b57\u306e\u30df\u30b9\u3092\u907f\u3051\u308b\u3002\u30b3\u30f3\u30bd\u30fc\u30eb\u306e\u5f79\u5272\u30d9\u30fc\u30b9\u306e\u30a2\u30af\u30bb\u30b9\u306f\u3001\u9069\u5207\u306a\u4eba\u3060\u3051\u304c\u30be\u30fc\u30f3\u3092\u5909\u66f4\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u975e\u5e38\u306b\u5b9f\u969b\u7684\u306a\u3053\u3068\u3067\u3059\u304c\u3001\u79c1\u306f\u30c1\u30fc\u30e0\u30c4\u30fc\u30eb\u3067\u5909\u66f4\u3092\u7c21\u5358\u306b\u6587\u66f8\u5316\u3057\u3066\u3044\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\/09\/hetzner-dns-setup-4837.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u79fb\u884c\u3068\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u6226\u7565<\/h2>\n<p>\u5f15\u3063\u8d8a\u3057\u306e\u524d\u306bTTL\u3092\u4e0b\u3052\uff0824\uff5e48\u6642\u9593\u524d\uff09\u3001\u30df\u30e9\u30fc\u30ea\u30f3\u30b0\u3092\u884c\u3046\u3002 <strong>\u8a18\u9332<\/strong> \u3092\u65b0\u3057\u3044\u30be\u30fc\u30f3\u306b\u8ffd\u52a0\u3057\u3001\u65b0\u3057\u3044\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u7d4c\u7531\u3057\u3066\u76f4\u63a5\u89e3\u6c7a\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u304c\u6b63\u3057\u3044\u5834\u5408\u306b\u306e\u307f <strong>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong> \u30ec\u30b8\u30b9\u30c8\u30e9\u3067\u3002\u59d4\u4efb\u5f8c\u3001\u79c1\u306f\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3068\u30a8\u30e9\u30fc\u3092\u76e3\u8996\u3059\u308b\u3002\u4f55\u304b\u554f\u984c\u304c\u767a\u751f\u3057\u305f\u3089\u3001\u7ba1\u7406\u3055\u308c\u305f\u65b9\u6cd5\u3067\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u304b\u3001\u500b\u3005\u306e\u30a8\u30f3\u30c8\u30ea\u3092\u4fee\u6b63\u3057\u307e\u3059\u3002\u79c1\u306fDNSSEC\u306e\u79fb\u884c\u3092\u7279\u306b\u4fdd\u5b88\u7684\u306b\u8a08\u753b\u3057\u3001\u65b0\u3057\u3044\u7f72\u540d\u30c1\u30a7\u30fc\u30f3\u304c\u5b89\u5168\u306b\u914d\u7f6e\u3055\u308c\u308b\u307e\u3067\u53e4\u3044\u7f72\u540d\u30c1\u30a7\u30fc\u30f3\u3092\u305d\u306e\u307e\u307e\u306b\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001TTL\u3092\u672c\u756a\u6e96\u62e0\u306e\u5024\u306b\u30ea\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u67d4\u8edf\u6027\u306b\u95a2\u3059\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u7c21\u5358\u306a\u6bd4\u8f03<\/h2>\n\n<p>\u6027\u80fd\u3001\u6a5f\u80fd <strong>DNS\u306e\u81ea\u7531<\/strong> \u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u3069\u308c\u3060\u3051\u67d4\u8edf\u306b\u5c55\u958b\u3067\u304d\u308b\u304b\u3092\u6c7a\u3081\u308b\u3002\u5b9f\u969b\u306e\u3068\u3053\u308d\u3001\u5927\u624b\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u4f1a\u793e\u306f <strong>\u5fdc\u7b54\u6642\u9593<\/strong>\u304c\u3001\u64cd\u4f5c\u3001\u6a5f\u80fd\u3001\u30b5\u30dd\u30fc\u30c8\u306e\u70b9\u3067\u7570\u306a\u308b\u3002\u79c1\u306f\u3001\u6027\u80fd\u3001\u6a5f\u80fd\u306e\u7bc4\u56f2\u3001\u30d8\u30eb\u30d7\u306e\u8cea\u3001DNS\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u9078\u629e\u3092\u8a55\u4fa1\u3059\u308b\u3002\u4ee5\u4e0b\u306e\u6982\u8981\u306f\u3001\u79c1\u304c\u6c7a\u65ad\u3092\u4e0b\u3059\u305f\u3081\u306b\u4f7f\u3048\u308b\u51dd\u7e2e\u3055\u308c\u305f\u30a4\u30e1\u30fc\u30b8\u3092\u793a\u3057\u3066\u3044\u308b\u3002\u6700\u7d42\u7684\u306b\u91cd\u8981\u306a\u306e\u306f\u3001\u79c1\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u672c\u5f53\u306b\u5fc5\u8981\u3068\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3042\u308a\u3001\u6700\u5927\u306e\u6a5f\u80fd\u30ea\u30b9\u30c8\u3067\u306f\u306a\u3044\u3002<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th><strong>\u30d7\u30ed\u30d0\u30a4\u30c0<\/strong><\/th>\n      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