{"id":6083,"date":"2025-09-29T17:18:34","date_gmt":"2025-09-29T08:18:34","guid":{"rendered":"https:\/\/sky-peace.net\/?p=6083"},"modified":"2025-09-29T17:18:34","modified_gmt":"2025-09-29T08:18:34","slug":"mail-auth","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/mail-auth\/","title":{"rendered":"\u3053\u308c\u3067\u7406\u89e3\u3067\u304d\u308b\uff01\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\u3068\u914d\u9001\u306e\u5168\u4f53\u50cf\uff08SMTP\/POP\/IMAP\u304b\u3089SPF\/DKIM\/DMARC\u307e\u3067\uff09"},"content":{"rendered":"

\u30e1\u30fc\u30eb\u306f\u4eca\u3084\u751f\u6d3b\u3084\u30d3\u30b8\u30cd\u30b9\u306b\u6b20\u304b\u305b\u306a\u3044\u901a\u4fe1\u624b\u6bb5\u3067\u3059\u304c\u3001\u305d\u306e\u88cf\u5074\u306e\u4ed5\u7d44\u307f\u306f\u610f\u5916\u3068\u8907\u96d1\u3067\u3059\u3002
\n\u300c\u9001\u4fe1\u300d\u300c\u914d\u9001\u300d\u300c\u53d7\u4fe1\u300d\u3068\u3044\u30463\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u5206\u304b\u308c\u3066\u3044\u3066\u3001\u305d\u308c\u305e\u308c\u3067\u4f7f\u308f\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6280\u8853\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u7279\u306b\u8a66\u9a13\u52c9\u5f37\u3084\u5b9f\u52d9\u3067\u3088\u304f\u51fa\u3066\u304f\u308b\u306e\u304c\u3001SMTP\u30fbPOP3\u30fbIMAP\u30fbSMTP AUTH\u30fbPOP before SMTP\u30fbOP25B\u30fbSPF\u30fbDKIM\u30fbDMARC<\/strong> \u3068\u3044\u3063\u305f\u7528\u8a9e\u3067\u3059\u3002
\n\u3053\u308c\u3089\u306f\u300c\u4f55\u3092\u5b88\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u304b\u300d\u300c\u3069\u3053\u3067\u50cd\u304f\u306e\u304b\u300d\u304c\u3054\u3061\u3083\u6df7\u305c\u306b\u306a\u308a\u3084\u3059\u304f\u3001\u6df7\u4e71\u306e\u3082\u3068\u306b\u306a\u308a\u304c\u3061\u3067\u3059\u3002<\/p>\n

\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u901a\u4fe1\u3092\u4e00\u679a\u306e\u56f3\u3067\u6574\u7406\u3057\u306a\u304c\u3089\u3001\u904e\u53bb\u304b\u3089\u73fe\u5728\u306b\u81f3\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u9032\u5316\u307e\u3067\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

\u30e1\u30fc\u30eb\u901a\u4fe1\u306e\u57fa\u672c\u69cb\u9020<\/h2>\n

\u30e1\u30fc\u30eb\u306f\u5927\u304d\u304f\u5206\u3051\u3066\u4ee5\u4e0b\u306e3\u3064\u306e\u901a\u4fe1\u3067\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n

    \n
  1. \u30e6\u30fc\u30b6 \u2192 \u81ea\u5206\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\uff08\u9001\u4fe1\uff09<\/strong>
    \n\u30e6\u30fc\u30b6\u304cPC\u3084\u30b9\u30de\u30db\u304b\u3089\u300c\u9001\u4fe1\u300d\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u3001\u81ea\u5206\u304c\u5951\u7d04\u3057\u3066\u3044\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u3084\u4f1a\u793e\u306eSMTP\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002
    \n\u73fe\u5728\u306f\u5fc5\u305a 587\u756a\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8\uff0bSMTP AUTH<\/strong> \u3067\u8a8d\u8a3c\u3092\u884c\u3044\u3001\u6b63\u898f\u30e6\u30fc\u30b6\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n
  2. \u81ea\u5206\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0 \u2192 \u76f8\u624b\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\uff08\u914d\u9001\uff09<\/strong>
    \n\u81ea\u5206\u306e\u30b5\u30fc\u30d0\u304c\u3001\u5b9b\u5148\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u5fdc\u3059\u308b\u53d7\u4fe1SMTP\u30b5\u30fc\u30d0\u3078\u76f4\u63a5\u30e1\u30fc\u30eb\u3092\u6e21\u3057\u307e\u3059\u3002
    \n\u3053\u3053\u3067\u4f7f\u3046\u306e\u306f 25\u756a\u30dd\u30fc\u30c8\uff08SMTP\uff09<\/strong>\u3002
    \n\u3053\u306e\u6bb5\u968e\u3067\u306f\u30e6\u30fc\u30b6\u8a8d\u8a3c\u306f\u306a\u304f\u3001\u4ee3\u308f\u308a\u306b SPF\u30fbDKIM\u30fbDMARC<\/strong> \u306a\u3069\u306e\u4ed5\u7d44\u307f\u3067\u300c\u9001\u4fe1\u5143\u304c\u6b63\u5f53\u304b\u300d\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n
  3. \u76f8\u624b\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0 \u2192 \u76f8\u624b\u30e6\u30fc\u30b6\uff08\u53d7\u4fe1\uff09<\/strong>
    \n\u76f8\u624b\u30e6\u30fc\u30b6\u304c\u81ea\u5206\u306e\u30b5\u30fc\u30d0\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u30e1\u30fc\u30eb\u3092\u8aad\u307f\u307e\u3059\u3002
    \n\u3053\u3053\u3067\u306f POP3\uff08110\u756a\uff09<\/strong> \u307e\u305f\u306f IMAP\uff08143\u756a\uff09<\/strong> \u304c\u4f7f\u308f\u308c\u3001\u5fc5\u305a\u30e6\u30fc\u30b6\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u3088\u308b\u8a8d\u8a3c\u3092\u4f34\u3044\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u56f3\u89e3\uff1a\u30e1\u30fc\u30eb\u901a\u4fe1\u306e\u57fa\u672c\u69cb\u9020<\/h3>\n
    [\u30e6\u30fc\u30b6PC\/\u30b9\u30de\u30db]\n    \u2502 \u9001\u4fe1 (SMTP 587\u756a + AUTH)\n    \u25bc\n[\u81ea\u5206\u306e\u9001\u4fe1SMTP\u30b5\u30fc\u30d0]\n    \u2502 \u914d\u9001 (SMTP 25\u756a, \u8a8d\u8a3c\u306a\u3057)\n    \u25bc\n[\u76f8\u624b\u306e\u53d7\u4fe1SMTP\u30b5\u30fc\u30d0]\n    \u2502 \u53d7\u4fe1 (POP3\/110\u756a or IMAP\/143\u756a, \u8a8d\u8a3c\u3042\u308a)\n    \u25bc\n[\u76f8\u624b\u30e6\u30fc\u30b6PC\/\u30b9\u30de\u30db]\n<\/pre>\n
    \u9001\u4fe1\u7d4c\u8def\u306e\u8a8d\u8a3c\u65b9\u5f0f\u306e\u9032\u5316<\/h2>\n
    \u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u304a\u3051\u308b\u300c\u8ab0\u304c\u6b63\u898f\u30e6\u30fc\u30b6\u304b\u300d\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5\u306f\u3001\u6642\u4ee3\u3068\u3068\u3082\u306b\u5927\u304d\u304f\u5909\u5316\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3053\u3053\u3067\u306f POP before SMTP \u2192 SMTP AUTH \u2192 OP25B<\/strong> \u3068\u3044\u3046\u6d41\u308c\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n
    POP before SMTP\uff08\u904e\u6e21\u671f\u306e\u4ed5\u7d44\u307f\uff09<\/h3>\n
      \n
    • \u8ab2\u984c\uff1a<\/strong>\u5f53\u521d\u306eSMTP\uff0825\u756a\u30dd\u30fc\u30c8\uff09\u306b\u306f\u30e6\u30fc\u30b6\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\u304c\u306a\u304f\u3001\u8ab0\u3067\u3082\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u3067\u304d\u3066\u3057\u307e\u3063\u305f\u3002<\/li>\n
    • \u4ed5\u7d44\u307f\uff1a<\/strong>\n
        \n
      1. \u30e6\u30fc\u30b6\u306f\u307e\u305aPOP3\u30b5\u30fc\u30d0\u306b\u30ed\u30b0\u30a4\u30f3\uff08\u30e6\u30fc\u30b6\u540d\uff0b\u30d1\u30b9\u30ef\u30fc\u30c9\uff09\u3002<\/li>\n
      2. \u30b5\u30fc\u30d0\u306f\u300c\u3053\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u6b63\u898f\u30e6\u30fc\u30b6\u300d\u3068\u4e00\u5b9a\u6642\u9593\u8a18\u9332\u3002<\/li>\n
      3. \u305d\u306e\u5f8c\u3001\u540c\u3058IP\u304b\u3089SMTP\u63a5\u7d9a\u304c\u3042\u308c\u3070\u9001\u4fe1\u3092\u8a31\u53ef\u3002<\/li>\n<\/ol>\n<\/li>\n
      4. \u7279\u5fb4\uff1a<\/strong>\u66ab\u5b9a\u7684\u306a\u5bfe\u5fdc\u7b56\u3067\u3042\u308a\u3001NAT\u74b0\u5883\u3084\u30e2\u30d0\u30a4\u30eb\u74b0\u5883\u3067\u306f\u4e0d\u5177\u5408\u3082\u591a\u304b\u3063\u305f\u3002<\/li>\n<\/ul>\n
        SMTP AUTH\u3068587\u756a\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8<\/h3>\n
          \n
        • \u767b\u5834\u80cc\u666f\uff1a<\/strong>POP before SMTP\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u3001SMTP\u81ea\u4f53\u306b\u30e6\u30fc\u30b6\u8a8d\u8a3c\u6a5f\u80fd\u3092\u7d44\u307f\u8fbc\u3093\u3060\u3002<\/li>\n
        • \u4ed5\u7d44\u307f\uff1a<\/strong>\n
            \n
          • \u30e6\u30fc\u30b6\u306fSMTP\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u3059\u308b\u3068\u304d\u3001\u5fc5\u305a\u30e6\u30fc\u30b6\u540d\uff0b\u30d1\u30b9\u30ef\u30fc\u30c9\u3067\u8a8d\u8a3c\uff08SMTP AUTH\uff09\u3002<\/li>\n
          • \u9001\u4fe1\u5c02\u7528\u306e\u30dd\u30fc\u30c8\u3068\u3057\u3066 587\u756a\uff08\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8\uff09<\/strong> \u3092\u5229\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n
          • \u30e1\u30ea\u30c3\u30c8\uff1a<\/strong>\n
              \n
            • \u6b63\u898f\u30e6\u30fc\u30b6\u306e\u307f\u304c\u9001\u4fe1\u53ef\u80fd\u306b\u306a\u308b\u3002<\/li>\n
            • POP3\u30b5\u30fc\u30d0\u3068\u9023\u643a\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u30b7\u30f3\u30d7\u30eb\u3002<\/li>\n
            • \u73fe\u5728\u306e\u6a19\u6e96\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
              OP25B\uff08Outbound Port 25 Blocking\uff09<\/h3>\n
                \n
              • \u8ab2\u984c\uff1a<\/strong>\u30e6\u30fc\u30b6\u8a8d\u8a3c\u3092\u5f37\u5316\u3057\u3066\u3082\u3001\u30a6\u30a4\u30eb\u30b9\u611f\u67d3PC\u304c\u5916\u90e8SMTP\u30b5\u30fc\u30d0\u306b\u76f4\u63a5\u63a5\u7d9a\uff0825\u756a\u76f4\u9001\uff09\u3057\u3066\u30b9\u30d1\u30e0\u3092\u3070\u3089\u307e\u304f\u554f\u984c\u304c\u6b8b\u3063\u305f\u3002<\/li>\n
              • \u4ed5\u7d44\u307f\uff1a<\/strong>\n
                  \n
                • ISP\uff08\u30d7\u30ed\u30d0\u30a4\u30c0\uff09\u304c\u300c\u30e6\u30fc\u30b6PC\u304b\u3089\u5916\u5411\u304d25\u756a\u30dd\u30fc\u30c8\u901a\u4fe1\u300d\u3092\u906e\u65ad\u3002<\/li>\n
                • \u30e6\u30fc\u30b6\u306f\u5fc5\u305a\u300c\u30d7\u30ed\u30d0\u30a4\u30c0\u306eSMTP\u30b5\u30fc\u30d0\uff08587\u756a\uff0bAUTH\uff09\u300d\u3092\u7d4c\u7531\u3059\u308b\u5f62\u306b\u5236\u5fa1\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n
                • \u30e1\u30ea\u30c3\u30c8\uff1a<\/strong>\n
                    \n
                  • \u611f\u67d3PC\u304b\u3089\u306e\u30b9\u30d1\u30e0\u62e1\u6563\u3092\u7269\u7406\u7684\u306b\u9632\u6b62\u3002<\/li>\n
                  • \u6b63\u898f\u7d4c\u8def\u306b\u4e00\u672c\u5316\u3067\u304d\u3001\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3\uff08\u8ffd\u8de1\u6027\uff09\u304c\u78ba\u4fdd\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
                    \u56f3\u89e3\uff1a\u9001\u4fe1\u7d4c\u8def\u306e\u8a8d\u8a3c\u9032\u5316<\/h3>\n
                    \u3010\u904e\u6e21\u671f\u3011POP before SMTP\n[\u30e6\u30fc\u30b6PC] -- POP3\u8a8d\u8a3c --> [POP3\u30b5\u30fc\u30d0] \u2192 IP\u8a18\u9332\n[\u30e6\u30fc\u30b6PC] -- SMTP\u9001\u4fe1(25) --> [SMTP\u30b5\u30fc\u30d0] (IP\u78ba\u8a8d\u3067\u8a31\u53ef)\n\n\u3010\u6a19\u6e96\u5316\u3011SMTP AUTH\uff08587\u756a\uff09\n[\u30e6\u30fc\u30b6PC] -- SMTP\u9001\u4fe1(587+AUTH) --> [SMTP\u30b5\u30fc\u30d0] (\u76f4\u63a5\u8a8d\u8a3c)\n\n\u3010\u5f37\u5316\u7b56\u3011OP25B\n[\u30e6\u30fc\u30b6PC] -- SMTP\u9001\u4fe1(25\u756a\u76f4\u9001) --> \u2715 ISP\u3067\u30d6\u30ed\u30c3\u30af\n      \u2193\n\u5fc5\u305a [SMTP\u30b5\u30fc\u30d0(587+AUTH)] \u7d4c\u7531\u3067\u9001\u4fe1\n<\/pre>\n
                    \u53d7\u4fe1\u7d4c\u8def\u306b\u304a\u3051\u308b\u8a8d\u8a3c\uff08POP3\/IMAP\uff09<\/h2>\n
                    \u9001\u4fe1\u6642\u306f587\u756a\uff0bSMTP AUTH\u3067\u30e6\u30fc\u30b6\u8a8d\u8a3c\u3092\u884c\u3044\u307e\u3057\u305f\u304c\u3001\u53d7\u4fe1\u6642<\/strong>\u3082\u30e6\u30fc\u30b6\u8a8d\u8a3c\u306f\u5fc5\u9808\u3067\u3059\u3002
                    \n\u30e6\u30fc\u30b6\u306f\u81ea\u5206\u306e\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306b\u3001POP3<\/strong> \u307e\u305f\u306f IMAP<\/strong> \u3092\u4f7f\u3063\u3066\u3001\u30e6\u30fc\u30b6\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9<\/strong>\uff08\u8fd1\u5e74\u306fOAuth2\u7b49\uff09\u3067\u8a8d\u8a3c\u3057\u307e\u3059\u3002<\/p>\n
                    POP3\u3068IMAP\u306e\u9055\u3044<\/h3>\n\n\n\n\n\n\n\n\n
                    \u9805\u76ee<\/th>\nPOP3\uff08110\u756a\uff09<\/th>\nIMAP\uff08143\u756a\uff09<\/th>\n<\/tr>\n<\/thead>\n
                    \u57fa\u672c\u30e2\u30c7\u30eb<\/td>\n\u53d7\u4fe1\u5f8c\u306b\u7aef\u672b\u3078\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\uff08\u30b5\u30fc\u30d0\u304b\u3089\u524a\u9664\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u8a2d\u5b9a\u306e\u3053\u3068\u304c\u591a\u3044\uff09<\/td>\n\u30b5\u30fc\u30d0\u4e0a\u306b\u4fdd\u5b58\u3057\u3001\u7aef\u672b\u3068\u540c\u671f\uff08\u8907\u6570\u7aef\u672b\u3067\u540c\u3058\u72b6\u614b\u3092\u4fdd\u3066\u308b\uff09<\/td>\n<\/tr>\n
                    \u30d5\u30a9\u30eb\u30c0\u7ba1\u7406<\/td>\n\u7aef\u672b\u5074\u3067\u7ba1\u7406<\/td>\n\u30b5\u30fc\u30d0\u5074\u3067\u30d5\u30a9\u30eb\u30c0\u30fb\u65e2\u8aad\u30fb\u30d5\u30e9\u30b0\u7b49\u3092\u7ba1\u7406<\/td>\n<\/tr>\n
                    \u9069\u3057\u305f\u7528\u9014<\/td>\n\u5358\u4e00\u7aef\u672b\u30fb\u30ed\u30fc\u30ab\u30eb\u4fdd\u5b58\u304c\u4e3b\u4f53<\/td>\n\u8907\u6570\u7aef\u672b\u30fb\u30e2\u30d0\u30a4\u30eb\u30fbWeb\u30e1\u30fc\u30eb\u9023\u643a<\/td>\n<\/tr>\n
                    \u8a8d\u8a3c<\/td>\n\u30e6\u30fc\u30b6\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\uff08APOP\u7b49\u306e\u62e1\u5f35\/\u975e\u63a8\u5968\uff09<\/td>\n\u30e6\u30fc\u30b6\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u8fd1\u5e74\u306fOAuth2\u5bfe\u5fdc\u304c\u4e00\u822c\u7684<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
                    \u6697\u53f7\u5316\uff08TLS\uff09\u306e\u6271\u3044<\/h3>\n
                      \n
                    • STARTTLS<\/strong>\uff1a\u5e73\u6587\u30dd\u30fc\u30c8\uff08POP3\/110, IMAP\/143\uff09\u3067\u63a5\u7d9a\u5f8c\u306bTLS\u3078\u6607\u683c\u3002<\/li>\n
                    • \u5c02\u7528TLS\u30dd\u30fc\u30c8<\/strong>\uff1aPOP3S\uff08995\uff09\u3001IMAPS\uff08993\uff09\u3002\u521d\u56de\u304b\u3089TLS\u3067\u6697\u53f7\u5316\u3002<\/li>\n
                    • \u73fe\u5728\u306fSTARTTLS \u307e\u305f\u306f\u5c02\u7528TLS\u30dd\u30fc\u30c8<\/strong>\u306e\u3069\u3061\u3089\u304b\u3067\u6697\u53f7\u5316\u3059\u308b\u306e\u304c\u5b9f\u52d9\u6a19\u6e96\u3002<\/li>\n<\/ul>\n
                      \u56f3\u89e3\uff1a\u53d7\u4fe1\u6642\u306e\u8a8d\u8a3c\u30d5\u30ed\u30fc<\/h3>\n
                      [\u30e6\u30fc\u30b6PC\/\u30b9\u30de\u30db]\n    \u2502  POP3(110) or IMAP(143)\n    \u2502  + \u8a8d\u8a3c\uff08ID\/\u30d1\u30b9\u30ef\u30fc\u30c9 or OAuth2\uff09\n    \u2502  + \u6697\u53f7\u5316\uff08STARTTLS \u3082\u3057\u304f\u306f 995\/993\uff09\n    \u25bc\n[\u81ea\u5206\u306e\u53d7\u4fe1\u30b5\u30fc\u30d0]\n    \u2502  \u30ed\u30b0\u30a4\u30f3\u6210\u529f\u306a\u3089\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3078\u30a2\u30af\u30bb\u30b9\n    \u25bc\n[\u30e1\u30fc\u30eb\u306e\u53d6\u5f97\/\u540c\u671f]\n<\/pre>\n
                      \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u6ce8\u610f\u70b9\uff08\u53d7\u4fe1\uff09<\/h3>\n
                        \n
                      • \u5fc5\u305a\u6697\u53f7\u5316<\/strong>\uff08STARTTLS\/995\/993\uff09\u3002\u5e73\u6587\u3067\u8cc7\u683c\u60c5\u5831\u3092\u6d41\u3055\u306a\u3044\u3002<\/li>\n
                      • \u4f7f\u3048\u308b\u5834\u5408\u306fOAuth2<\/strong>\uff08\u30a2\u30d7\u30ea\u30d1\u30b9\u30ef\u30fc\u30c9\u542b\u3080\uff09\u3092\u512a\u5148\u3057\u3001\u5e73\u6587\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u907f\u3051\u308b<\/strong>\u3002<\/li>\n
                      • IMAP\u5229\u7528\u6642\u306f\u3001\u7aef\u672b\u7d1b\u5931\u306b\u5099\u3048\u7aef\u672b\u5074\u306e\u30c7\u30a3\u30b9\u30af\u6697\u53f7\u5316\u30fb\u753b\u9762\u30ed\u30c3\u30af<\/strong>\u3082\u5fc5\u9808\u3002<\/li>\n
                      • POP3\u3067\u300c\u30b5\u30fc\u30d0\u306b\u6b8b\u3059\u300d\u8a2d\u5b9a\u306b\u3059\u308b\u5834\u5408\u3001\u5bb9\u91cf\u8d85\u904e\u3084\u91cd\u8907\u53d7\u4fe1<\/strong>\u306b\u6ce8\u610f\u3002<\/li>\n<\/ul>\n
                        <\/i>\u53c2\u8003<\/p>
                        \n\n\n\n\n\n\n\n\n\n
                        \u9805\u76ee<\/th>\nSMTP AUTH<\/th>\nOP25B<\/th>\n<\/tr>\n<\/thead>\n
                        \u5bfe\u8c61<\/td>\n\u30e6\u30fc\u30b6\u3068SMTP\u30b5\u30fc\u30d0\u306e\u9593<\/td>\n\u30e6\u30fc\u30b6PC\u3068\u5916\u90e8SMTP\u30b5\u30fc\u30d0\u306e\u901a\u4fe1\uff0825\u756a\u30dd\u30fc\u30c8\uff09<\/td>\n<\/tr>\n
                        \u65b9\u5f0f<\/td>\n\u30e6\u30fc\u30b6\u540d\uff0b\u30d1\u30b9\u30ef\u30fc\u30c9\u3067\u672c\u4eba\u8a8d\u8a3c<\/td>\nISP\u304c\u30e6\u30fc\u30b6PC\u306e\u5916\u5411\u304d25\u756a\u3092\u5f37\u5236\u7684\u306b\u906e\u65ad<\/td>\n<\/tr>\n
                        \u76ee\u7684<\/td>\n\u6b63\u898f\u30e6\u30fc\u30b6\u4ee5\u5916\u304c\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b<\/td>\n\u611f\u67d3PC\u304c\u5916\u90e8\u30b5\u30fc\u30d0\u306b\u76f4\u63a5\u30b9\u30d1\u30e0\u9001\u4fe1\u3059\u308b\u306e\u3092\u9632\u3050<\/td>\n<\/tr>\n
                        \u52b9\u679c<\/td>\n\u5229\u7528\u8005\u306e\u7279\u5b9a\u304c\u53ef\u80fd\u306b\u306a\u308a\u3001\u4e0d\u6b63\u5229\u7528\u3092\u6291\u6b62<\/td>\n\u9001\u4fe1\u7d4c\u8def\u3092\u300c587\u756a\uff0bAUTH\u300d\u306b\u4e00\u672c\u5316\u3057\u3001\u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd<\/td>\n<\/tr>\n
                        \u5c0e\u5165\u80cc\u666f<\/td>\n\u30aa\u30fc\u30d7\u30f3\u30ea\u30ec\u30fc\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081<\/td>\n\u30dc\u30c3\u30c8\u611f\u67d3PC\u304b\u3089\u306e\u30b9\u30d1\u30e0\u76f4\u9001\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div>\n
                        <\/i>OP25B\u306e\u9650\u754c\u3068\u5f79\u5272<\/p>
                        \n
                        OP25B\uff08Outbound Port 25 Blocking\uff09\u306f\u3001\u30e6\u30fc\u30b6PC\u304b\u3089\u5916\u90e8SMTP\u30b5\u30fc\u30d0\u3078\u306e25\u756a\u30dd\u30fc\u30c8\u63a5\u7d9a\u3092\u5f37\u5236\u7684\u306b\u906e\u65ad\u3057\u3001
                        \n\u300c\u5951\u7d04\u3057\u3066\u3044\u308bISP\u306eSMTP\u30b5\u30fc\u30d0\u3092\u5fc5\u305a\u7d4c\u7531\u3055\u305b\u308b\u300d\u4ed5\u7d44\u307f\u3067\u3059\u3002
                        \n\u3057\u304b\u3057\u4e07\u80fd\u3067\u306f\u306a\u304f\u3001\u3044\u304f\u3064\u304b\u306e\u9650\u754c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
                        OP25B\u306e\u9650\u754c<\/strong><\/p>\n
                          \n
                        • \u540c\u3058ISP\u5229\u7528\u8005\u306a\u3089\u9001\u4fe1\u3067\u304d\u3066\u3057\u307e\u3046\uff1a<\/strong>
                          \n\u60aa\u610f\u3042\u308b\u5229\u7528\u8005\u3082\u3001\u540c\u3058ISP\u306eSMTP\u30b5\u30fc\u30d0\u3092\u4f7f\u3046\u3053\u3068\u306f\u53ef\u80fd\u3002\u305d\u306e\u305f\u3081\u300c\u540c\u3058\u56de\u7dda\u304b\u3089\u9001\u3089\u308c\u308b\u30b9\u30d1\u30e0\u300d\u3092\u5b8c\u5168\u306b\u6392\u9664\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3002<\/li>\n
                        • \u6b63\u898f\u30e6\u30fc\u30b6\u3068\u540c\u3058\u7d4c\u8def\u3092\u4f7f\u3048\u308b\uff1a<\/strong>
                          \nISP\u306eSMTP\u30b5\u30fc\u30d0\u306f\u6b63\u898f\u30e6\u30fc\u30b6\u3082\u5229\u7528\u3059\u308b\u305f\u3081\u3001\u60aa\u610f\u306e\u3042\u308b\u4eba\u3082\u305d\u3053\u3092\u901a\u904e\u3067\u304d\u3066\u3057\u307e\u3046\u3002<\/li>\n<\/ul>\n
                          \u305d\u308c\u3067\u3082\u6709\u52b9\u306a\u7406\u7531<\/strong><\/p>\n
                            \n
                          • \u533f\u540d\u30b9\u30d1\u30e0\u3092\u9632\u3052\u308b\uff1a<\/strong>
                            \nOP25B\u306b\u3088\u308a\u3001\u5916\u90e8\u306e\u4e0d\u7279\u5b9a\u591a\u6570\u306eSMTP\u30b5\u30fc\u30d0\u3092\u8e0f\u307f\u53f0\u306b\u3057\u3066\u533f\u540d\u3067\u30b9\u30d1\u30e0\u3092\u3070\u3089\u307e\u304f\u3053\u3068\u306f\u4e0d\u53ef\u80fd\u306b\u306a\u308b\u3002<\/li>\n
                          • \u9001\u4fe1\u7d4c\u8def\u304c\u5236\u9650\u3055\u308c\u308b\uff1a<\/strong>
                            \n\u60aa\u610f\u3042\u308b\u4eba\u3082\u3001\u5951\u7d04ISP\u306eSMTP\u30b5\u30fc\u30d0\u7d4c\u7531\u306b\u9650\u5b9a\u3055\u308c\u308b\u305f\u3081\u3001\u30b9\u30d1\u30e0\u306e\u62e1\u6563\u7bc4\u56f2\u304c\u5927\u5e45\u306b\u6291\u5236\u3055\u308c\u308b\u3002<\/li>\n
                          • \u30c8\u30ec\u30fc\u30b5\u30d3\u30ea\u30c6\u30a3\uff08\u8ffd\u8de1\u6027\uff09\u304c\u78ba\u4fdd\u3055\u308c\u308b\uff1a<\/strong>
                            \nISP\u306eSMTP\u30b5\u30fc\u30d0\u3067\u306f\u3001\u30e6\u30fc\u30b6ID\u30fb\u9001\u4fe1\u5143IP\u30fb\u9001\u4fe1\u5148\u306a\u3069\u304c\u30ed\u30b0\u3068\u3057\u3066\u6b8b\u308b\u3002\u4e0d\u5be9\u306a\u9001\u4fe1\u306f\u5373\u5ea7\u306b\u7279\u5b9a\u53ef\u80fd\u3002<\/li>\n<\/ul>\n
                            \u307e\u3068\u3081<\/strong><\/p>\n
                            OP25B\u306f\u300c\u30b9\u30d1\u30e0\u3092\u5b8c\u5168\u306b\u9632\u3050\u4ed5\u7d44\u307f\u300d\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002
                            \n\u30fb\u533f\u540d\u3067\u306e\u5927\u91cf\u9001\u4fe1\u3092\u5c01\u3058\u308b
                            \n\u30fb\u4e0d\u6b63\u9001\u4fe1\u3092\u8ffd\u8de1\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b<\/strong>
                            \n\u3053\u306e2\u70b9\u3092\u5b9f\u73fe\u3059\u308b\u3053\u3068\u3067\u3001\u30b9\u30d1\u30e0\u696d\u8005\u306b\u3068\u3063\u3066\u306e\u30b3\u30b9\u30c8\u3092\u9ad8\u3081\u3001\u5b9f\u52b9\u6027\u306e\u3042\u308b\u5bfe\u7b56\u3068\u3057\u3066\u5e83\u304f\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div><\/div>\n
                            \u5168\u4f53\u50cf\u306e\u307e\u3068\u3081<\/h2>\n
                            \u3053\u3053\u307e\u3067\u3001\u30e1\u30fc\u30eb\u901a\u4fe1\u3092\u300c\u9001\u4fe1\u300d\u300c\u914d\u9001\u300d\u300c\u53d7\u4fe1\u300d\u306e3\u6bb5\u968e\u306b\u5206\u3051\u3001\u305d\u308c\u305e\u308c\u306e\u8a8d\u8a3c\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4ed5\u7d44\u307f\u3092\u6574\u7406\u3057\u3066\u304d\u307e\u3057\u305f\u3002
                            \n\u6700\u5f8c\u306b\u4e00\u679a\u306e\u56f3\u3068\u8981\u70b9\u3067\u7dcf\u5fa9\u7fd2\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
                            \u5168\u4f53\u30d5\u30ed\u30fc\u56f3<\/h3>\n
                            \u3010\u9001\u4fe1\u3011\u30e6\u30fc\u30b6 \u2192 \u81ea\u5206\u306e\u30b5\u30fc\u30d0\n  - \u904e\u6e21\u671f\uff1aPOP before SMTP\uff08POP3\u8a8d\u8a3c\u3067IP\u8a31\u53ef\uff09\n  - \u73fe\u5728\u6a19\u6e96\uff1aSMTP AUTH\uff08587\u756a\uff0b\u30e6\u30fc\u30b6\u540d\/\u30d1\u30b9\u30ef\u30fc\u30c9\uff09\n  - \u5f37\u5316\u7b56\uff1aOP25B\uff0825\u756a\u76f4\u9001\u3092\u30d7\u30ed\u30d0\u30a4\u30c0\u3067\u906e\u65ad\uff09\n\n\u3010\u914d\u9001\u3011\u81ea\u5206\u306e\u30b5\u30fc\u30d0 \u2192 \u76f8\u624b\u306e\u30b5\u30fc\u30d0\uff0825\u756a, \u8a8d\u8a3c\u306a\u3057\uff09\n  - \u4fe1\u983c\u6027\u78ba\u8a8d\uff1a\n    \u30fbSPF\uff1a\u9001\u4fe1\u5143IP\u304c\u8a31\u53ef\u3055\u308c\u3066\u3044\u308b\u304b\uff1f\n    \u30fbDKIM\uff1a\u96fb\u5b50\u7f72\u540d\u304c\u6b63\u3057\u3044\u304b\uff1f\n    \u30fbDMARC\uff1aSPF\/DKIM\u7d50\u679c\u306b\u5f93\u3063\u3066\u53d7\u3051\u53d6\u308b\uff0f\u9694\u96e2\uff0f\u62d2\u5426\n\n\u3010\u53d7\u4fe1\u3011\u76f8\u624b\u306e\u30b5\u30fc\u30d0 \u2192 \u76f8\u624b\u30e6\u30fc\u30b6\n  - POP3\uff08110\u756a\uff09 or IMAP\uff08143\u756a\uff09\n  - \u5fc5\u305a\u30e6\u30fc\u30b6\u8a8d\u8a3c\uff08ID\/\u30d1\u30b9\u30ef\u30fc\u30c9\uff09\n  - TLS\u6697\u53f7\u5316\uff08995\/993, STARTTLS\uff09\u304c\u73fe\u5728\u306e\u6a19\u6e96\n<\/pre>\n
                             <\/p>\n
                            \u8a66\u9a13\u5bfe\u7b56\u30fb\u5b9f\u52d9\u306e\u30dd\u30a4\u30f3\u30c8<\/h3>\n
                              \n
                            • \u9001\u4fe1\u7d4c\u8def\uff1a<\/strong>POP before SMTP\u306f\u904e\u53bb\u306e\u65b9\u5f0f\u3001\u73fe\u5728\u306fSMTP AUTH\uff0bOP25B\u304c\u30bb\u30c3\u30c8\u3067\u5fc5\u9808\u3002<\/li>\n
                            • \u914d\u9001\u7d4c\u8def\uff1a<\/strong>25\u756a\u30dd\u30fc\u30c8\u306f\u8a8d\u8a3c\u306a\u3057\u3001\u4ee3\u308f\u308a\u306bSPF\/DKIM\/DMARC\u3067\u6b63\u5f53\u6027\u3092\u62c5\u4fdd\u3002<\/li>\n
                            • \u53d7\u4fe1\u7d4c\u8def\uff1a<\/strong>POP3\/IMAP\u3067\u306f\u5fc5\u305a\u30e6\u30fc\u30b6\u8a8d\u8a3c\u3001\u3055\u3089\u306b\u6697\u53f7\u5316\u3082\u5b9f\u52d9\u3067\u306f\u5fc5\u9808\u3002<\/li>\n
                            • \u307e\u3068\u3081\uff1a<\/strong>\u300c\u3069\u3053\u3067\u8ab0\u3092\u8a8d\u8a3c\u3059\u308b\u306e\u304b\uff0f\u3069\u3053\u3067\u6b63\u5f53\u6027\u3092\u691c\u8a3c\u3059\u308b\u306e\u304b\u300d\u3092\u6bb5\u968e\u3054\u3068\u306b\u6574\u7406\u3059\u308b\u3068\u6df7\u4e71\u3057\u306a\u3044\u3002<\/li>\n<\/ul>\n
                              \u3053\u306e\u3088\u3046\u306b\u3001\u30e1\u30fc\u30eb\u306e\u4ed5\u7d44\u307f\u306f\u9577\u5e74\u306e\u6b74\u53f2\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8ab2\u984c\u3092\u80cc\u666f\u306b\u9032\u5316\u3057\u3066\u304d\u307e\u3057\u305f\u3002
                              \n\u8a66\u9a13\u5bfe\u7b56\u3068\u3057\u3066\u306f\u3001\u5404\u65b9\u5f0f\u304c\u300c\u3044\u3064\u30fb\u3069\u3053\u3067\u30fb\u4f55\u3092\u5b88\u308b\u305f\u3081\u306b\u767b\u5834\u3057\u305f\u306e\u304b\u300d<\/strong>\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u3068\u78ba\u5b9f\u3067\u3059\u3002<\/p>\n
                              \u5168\u4f53\u30d5\u30ed\u30fc\u56f3\uff08\u9001\u4fe1\uff5e\u914d\u9001\uff5e\u53d7\u4fe1\u306e\u6d41\u308c\uff09<\/h3>\n
                              \u3010\u30e6\u30fc\u30b6\u9001\u4fe1\u3011\n[\u30e6\u30fc\u30b6PC\/\u30b9\u30de\u30db]\n    \u2502 (SMTP 587\u756a + AUTH)\n    \u25bc\n[\u81ea\u5206\u306e\u9001\u4fe1SMTP\u30b5\u30fc\u30d0]\n    \u2502 (POP before SMTP\uff1a\u904e\u6e21\u671f\u306e\u65b9\u5f0f, \u73fe\u5728\u306fSMTP AUTH\u3067\u76f4\u63a5\u8a8d\u8a3c)\n    \u2502\n    \u2502 OP25B\u306b\u3088\u308a25\u756a\u76f4\u9001\u306f\u7981\u6b62\n    \u25bc\n\n\u3010\u30b5\u30fc\u30d0\u9593\u914d\u9001\u3011\n[\u81ea\u5206\u306e\u9001\u4fe1SMTP\u30b5\u30fc\u30d0]\n    \u2502 (SMTP 25\u756a, \u8a8d\u8a3c\u306a\u3057)\n    \u25bc\n[\u76f8\u624b\u306e\u53d7\u4fe1SMTP\u30b5\u30fc\u30d0]\n    \u2502 \u250c\u2500 SPF\uff1a\u9001\u4fe1\u5143IP\u306e\u78ba\u8a8d\n    \u2502 \u251c\u2500 DKIM\uff1a\u96fb\u5b50\u7f72\u540d\u306e\u691c\u8a3c\n    \u2502 \u2514\u2500 DMARC\uff1a\u30dd\u30ea\u30b7\u30fc\u306b\u57fa\u3065\u304f\u51e6\u7406(\u53d7\u4fe1\/\u9694\u96e2\/\u62d2\u5426)\n    \u25bc\n\n\u3010\u30e6\u30fc\u30b6\u53d7\u4fe1\u3011\n[\u76f8\u624b\u30e6\u30fc\u30b6PC\/\u30b9\u30de\u30db]\n    \u25b2\n    \u2502 POP3 (110\u756a) \u307e\u305f\u306f IMAP (143\u756a)\n    \u2502 \u5fc5\u305a\u30e6\u30fc\u30b6\u8a8d\u8a3c + TLS\u6697\u53f7\u5316(995\/993, STARTTLS)\n    \u25bc\n[\u76f8\u624b\u306e\u53d7\u4fe1SMTP\u30b5\u30fc\u30d0\/\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9]\n<\/pre>\n
                              \u30e1\u30fc\u30eb\u9001\u4fe1\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u9032\u5316\uff08\u30bf\u30a4\u30e0\u30e9\u30a4\u30f3\uff09<\/h3>\n
                              \u30101990\u5e74\u4ee3\u524d\u534a\u3011\u30aa\u30fc\u30d7\u30f3\u30ea\u30ec\u30fc\u6642\u4ee3\n  - SMTP(25\u756a)\u306b\u8a8d\u8a3c\u306a\u3057\u3067\u8ab0\u3067\u3082\u63a5\u7d9a\u53ef\u80fd\n  - \u30b9\u30d1\u30e0\u304c\u6a2a\u884c\u3001\u8e0f\u307f\u53f0\u30b5\u30fc\u30d0\u304c\u5927\u91cf\u767a\u751f\n\n        \u2193\n\n\u30101990\u5e74\u4ee3\u5f8c\u534a\u3011POP before SMTP\n  - SMTP\u306b\u8a8d\u8a3c\u304c\u306a\u3044\u8ab2\u984c\u3078\u306e\u66ab\u5b9a\u7b56\n  - POP3\u3067\u30ed\u30b0\u30a4\u30f3\u3057\u305fIP\u3092\u4e00\u5b9a\u6642\u9593\u6709\u52b9\u5316\u3057\u3001SMTP\u9001\u4fe1\u3092\u8a31\u53ef\n  - NAT\u3084\u30e2\u30d0\u30a4\u30eb\u74b0\u5883\u3067\u4e0d\u5177\u5408\u304c\u591a\u767a\n\n        \u2193\n\n\u30102000\u5e74\u4ee3\u524d\u534a\u3011SMTP AUTH + \u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8(587\u756a)\n  - SMTP\u306b\u8a8d\u8a3c\u6a5f\u80fd\u3092\u5c0e\u5165\n  - \u30e6\u30fc\u30b6\u306f\u5fc5\u305a\u300c587\u756a\uff0b\u30e6\u30fc\u30b6\u540d\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\u300d\u3067\u9001\u4fe1\n  - POP3\u9023\u643a\u304c\u4e0d\u8981\u306b\u306a\u308a\u3001\u73fe\u5728\u306e\u6a19\u6e96\u65b9\u5f0f\u306b\n\n        \u2193\n\n\u30102000\u5e74\u4ee3\u534a\u3070\u3011OP25B (Outbound Port 25 Blocking)\n  - \u611f\u67d3PC\u304c25\u756a\u76f4\u9001\u3067\u30b9\u30d1\u30e0\u3092\u9001\u308b\u554f\u984c\u3092\u5bfe\u7b56\n  - ISP\u304c\u30e6\u30fc\u30b6PC\u304b\u3089\u5916\u90e825\u756a\u3092\u906e\u65ad\n  - \u9001\u4fe1\u7d4c\u8def\u3092\u300c587\u756a\uff0bAUTH\u300d\u306b\u4e00\u672c\u5316\n\n        \u2193\n\n\u30102010\u5e74\u4ee3\u4ee5\u964d\u3011SPF \/ DKIM \/ DMARC\n  - \u30b5\u30fc\u30d0\u9593\u914d\u9001(25\u756a, \u8a8d\u8a3c\u306a\u3057)\u306e\u6b63\u5f53\u6027\u78ba\u8a8d\u3092\u5f37\u5316\n  - SPF\uff1a\u9001\u4fe1\u5143IP\u3092DNS\u3067\u78ba\u8a8d\n  - DKIM\uff1a\u96fb\u5b50\u7f72\u540d\u306b\u3088\u308b\u6539\u3056\u3093\u9632\u6b62\n  - DMARC\uff1aSPF\/DKIM\u306e\u7d50\u679c\u306b\u57fa\u3065\u304d\u53d7\u4fe1\u5074\u306e\u51e6\u7406\u3092\u7d71\u4e00\n<\/pre>\n
                              \u8a66\u9a13\u5bfe\u7b56\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff08\u6697\u8a18\u7528\u307e\u3068\u3081\uff09<\/h2>\n
                                \n
                              • SMTP\uff0825\u756a\uff09<\/strong>\uff1a\u30b5\u30fc\u30d0\u9593\u914d\u9001\u7528\u3002\u8a8d\u8a3c\u306a\u3057\u3002\u73fe\u5728\u3082\u5229\u7528\u3055\u308c\u3066\u3044\u308b\u3002<\/li>\n
                              • POP3\uff08110\u756a\uff09<\/strong>\uff1a\u53d7\u4fe1\u5c02\u7528\u3002\u57fa\u672c\u306f\u30e1\u30fc\u30eb\u3092\u7aef\u672b\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3002<\/li>\n
                              • IMAP\uff08143\u756a\uff09<\/strong>\uff1a\u53d7\u4fe1\u5c02\u7528\u3002\u30b5\u30fc\u30d0\u306b\u30e1\u30fc\u30eb\u3092\u6b8b\u3057\u3001\u8907\u6570\u7aef\u672b\u3067\u540c\u671f\u53ef\u80fd\u3002<\/li>\n
                              • SMTP AUTH\uff08587\u756a\uff09<\/strong>\uff1a\u30e6\u30fc\u30b6\u9001\u4fe1\u5c02\u7528\u30dd\u30fc\u30c8\u3002\u5fc5\u305a\u30e6\u30fc\u30b6\u8a8d\u8a3c\uff08ID\u30fb\u30d1\u30b9\u30ef\u30fc\u30c9\uff09\u3002\u73fe\u5728\u306e\u6a19\u6e96\u3002<\/li>\n
                              • POP before SMTP<\/strong>\uff1aPOP3\u30ed\u30b0\u30a4\u30f3\u5f8c\u306eIP\u3092\u3082\u3068\u306bSMTP\u9001\u4fe1\u8a31\u53ef\u3002\u904e\u6e21\u671f\u306e\u4ed5\u7d44\u307f\u3002<\/li>\n
                              • OP25B<\/strong>\uff1aISP\u304c\u5916\u5411\u304d25\u756a\u3092\u906e\u65ad\u3002\u611f\u67d3PC\u306e\u30b9\u30d1\u30e0\u76f4\u9001\u3092\u9632\u3050\u3002587\u756a\uff0bAUTH\u5229\u7528\u3092\u5f37\u5236\u3002<\/li>\n
                              • SPF<\/strong>\uff1a\u9001\u4fe1\u5143IP\u304c\u6b63\u3057\u3044\u304bDNS\u3067\u691c\u8a3c\u3002<\/li>\n
                              • DKIM<\/strong>\uff1a\u96fb\u5b50\u7f72\u540d\u3067\u6539\u3056\u3093\u3084\u306a\u308a\u3059\u307e\u3057\u3092\u691c\u8a3c\u3002<\/li>\n
                              • DMARC<\/strong>\uff1aSPF\/DKIM\u306e\u7d50\u679c\u306b\u57fa\u3065\u304d\u3001\u53d7\u4fe1\u5074\u306e\u51e6\u7406\uff08\u53d7\u4fe1\/\u9694\u96e2\/\u62d2\u5426\uff09\u3092\u5b9a\u7fa9\u3002<\/li>\n
                              • \u6697\u53f7\u5316<\/strong>\uff1aPOP3S(995) \/ IMAPS(993) \/ STARTTLS \u3092\u4f7f\u3046\u306e\u304c\u5b9f\u52d9\u6a19\u6e96\u3002<\/li>\n<\/ul>\n
                                \u899a\u3048\u3066\u304a\u304f\u3079\u304d\u30dd\u30a4\u30f3\u30c8<\/h3>\n
                                  \n
                                1. \u9001\u4fe1\u306e\u9032\u5316\uff1a<\/strong>\u30aa\u30fc\u30d7\u30f3\u30ea\u30ec\u30fc \u2192 POP before SMTP \u2192 SMTP AUTH\/587 \u2192 OP25B<\/li>\n
                                2. \u914d\u9001\u306e\u691c\u8a3c\uff1a<\/strong>\u30b5\u30fc\u30d0\u9593\u914d\u9001\u306f\u8a8d\u8a3c\u306a\u3057 \u2192 SPF\/DKIM\/DMARC\u3067\u88dc\u5f37<\/li>\n
                                3. \u53d7\u4fe1\u306e\u8a8d\u8a3c\uff1a<\/strong>POP3\/IMAP\u3067\u5fc5\u305a\u30e6\u30fc\u30b6\u8a8d\u8a3c\uff0bTLS\u6697\u53f7\u5316<\/li>\n
                                4. \u30dd\u30fc\u30c8\u756a\u53f7\u6697\u8a18\uff1a<\/strong>25(SMTP), 587(SMTP AUTH), 110(POP3), 143(IMAP), 995(POP3S), 993(IMAPS)<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
                                  \u30e1\u30fc\u30eb\u306f\u4eca\u3084\u751f\u6d3b\u3084\u30d3\u30b8\u30cd\u30b9\u306b\u6b20\u304b\u305b\u306a\u3044\u901a\u4fe1\u624b\u6bb5\u3067\u3059\u304c\u3001\u305d\u306e\u88cf\u5074\u306e\u4ed5\u7d44\u307f\u306f\u610f\u5916\u3068\u8907\u96d1\u3067\u3059\u3002 \u300c\u9001\u4fe1\u300d\u300c\u914d\u9001\u300d\u300c\u53d7\u4fe1\u300d\u3068\u3044\u30463\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u306b\u5206\u304b\u308c\u3066\u3044\u3066\u3001\u305d\u308c\u305e\u308c\u3067\u4f7f\u308f\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6280\u8853\u304c\u7570 … <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","columnck":"","stmeta_robots":"index, follow","st_titlewords":"","st_title_extra":"","st_keywords":"","st_description":"","st_display_ad_mark":"","st_display_ad_mark_hide":"","textcopyck":"","st_copyright":"","st_copyurl":"","eyecatch_set":"","st_youtube_url":"","st_youtube_eyecatch":"","headerwidget_set":"","updatewidget_set":"","kanrenwidget_set":"","ikkatuwidget_set":"","koukoku_set":"","auto_adsense_koukoku_set":"","st_redirect":"","st_redirect_url_as_canonical":"","st_redirect_pvm_do_not_track":"","post_data_updatewidget_set":"","st_post_header_under_bg":"","st_twitter_tag":"","affinger_note":"","rankdisplayck":"","st_head_code":"","st_footer_code":"","st_post_header_under_code":"","_st_toc_override":false,"_st_toc_settings":[]},"categories":[3],"tags":[5],"class_list":["post-6083","post","type-post","status-publish","format-standard","hentry","category-ipa","tag-5"],"_links":{"self":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts\/6083","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/comments?post=6083"}],"version-history":[{"count":0,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/posts\/6083\/revisions"}],"wp:attachment":[{"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/media?parent=6083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/categories?post=6083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sky-peace.net\/certified\/wp-json\/wp\/v2\/tags?post=6083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}