{"id":26987,"date":"2020-03-23T02:36:53","date_gmt":"2020-03-23T09:36:53","guid":{"rendered":"https:\/\/kinqsta.com\/?p=63364"},"modified":"2024-02-08T23:06:15","modified_gmt":"2024-02-08T14:06:15","slug":"smtp-port","status":"publish","type":"post","link":"https:\/\/kinqsta.com\/jp\/blog\/smtp-port\/","title":{"rendered":"SMTP\u30dd\u30fc\u30c8\u306e\u9078\u3073\u65b9\u250025\u3001587\u3001465\u30012525\u756a\u30dd\u30fc\u30c8\u306e\u9055\u3044"},"content":{"rendered":"<p>SMTP\u30dd\u30fc\u30c8\u306f\u3069\u308c\u3092\u9078\u629e\u3059\u308c\u3070\u3044\u3044\u306e\u304b\u308f\u304b\u3089\u306a\u3044\u3001\u3068\u3044\u3046\u65b9\u306f\u5c11\u306a\u304f\u306a\u3044\u306f\u305a\u3002Apple Mail\u3084Outlook\u306a\u3069\u306e\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u308c\u3070\u3001\u304a\u305d\u3089\u304f\u9001\u4fe1\u30e1\u30fc\u30eb\u3092\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u305f\u3081\u306bSMTP\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\uff08\u53d7\u4fe1\u30e1\u30fc\u30eb\u3092\u30a2\u30d7\u30ea\u306b\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u306e\u306b\u306f\u3001IMAP\u3084POP3\u306e\u3088\u3046\u306a\u5225\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u4f7f\u308f\u308c\u308b\u304c\uff09\u3002<\/p>\n<p>\u307e\u305f\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/wordpress-not-sending-email\/\">WordPress\u30b5\u30a4\u30c8\u3067\u306e\u30e1\u30fc\u30eb\u306e\u914d\u4fe1\u306b\u554f\u984c\u304c\u3042\u308b<\/a>\u5834\u5408\u3001\u52b9\u679c\u7684\u306a\u89e3\u6c7a\u65b9\u6cd5\u3068\u3057\u3066\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/sendgrid-wordpress\/\">SendGrid<\/a>\u3001<a href=\"https:\/\/kinqsta.com\/jp\/blog\/mailgun-wordpress\/\">Mailgun<\/a>\u3001<a href=\"https:\/\/kinqsta.com\/blog\/google-workspace\/\">G Suite<\/a>\u306e\u3088\u3046\u306a<a href=\"https:\/\/kinqsta.com\/jp\/blog\/free-smtp-server\/\">SMTP\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9<\/a>\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3084WordPress\u30b5\u30a4\u30c8\u3067SMTP\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u8907\u6570\u3042\u308bSMTP\u30dd\u30fc\u30c8\u306e\u3044\u305a\u308c\u304b\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>SMTP\u30dd\u30fc\u30c8\u306b\u3064\u3044\u3066\u7406\u89e3\u3057\u3001\u76ee\u7684\u306b\u9069\u3057\u305fSMTP\u30dd\u30fc\u30c8\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n<div><\/div><kinsta-auto-toc heading=\"Table of Contents\" exclude=\"last\" list-style=\"arrow\" selector=\"h2\" count-number=\"-1\"><\/kinsta-auto-toc>\n<h2 id=\"what\">SMTP\u30dd\u30fc\u30c8\u3068\u306f<\/h2>\n<p>SMTP\u306fSimple Mail Transfer Protocol\uff08\u7c21\u6613\u30e1\u30fc\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\uff09\u306e\u7565\u3067\u3042\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u30e1\u30fc\u30eb\u3092\u8ee2\u9001\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3059\u308b\u306e\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u30e1\u30fc\u30eb\u3092\u4f5c\u6210\u3057\u3066\u9001\u4fe1\u3059\u308b\u969b\u3001\u5229\u7528\u3059\u308b\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u9001\u4fe1\u7528\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u30e1\u30fc\u30eb\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u4ed5\u7d44\u307f\u3001\u305d\u3057\u3066\u53d7\u53d6\u4eba\u306e\u53d7\u4fe1\u7528\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u30e1\u30fc\u30eb\u3092\u8ee2\u9001\u3059\u308b\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u8868\u9762\u4e0a\u306f\u4eba\u9593\u306b\u308f\u304b\u308a\u3084\u3059\u3044<a href=\"https:\/\/kinqsta.com\/blog\/how-much-does-a-domain-name-cost\/\">\u30c9\u30e1\u30a4\u30f3\u540d<\/a>\u304c\u4f7f\u7528\u3055\u308c\u3001\u5b9f\u969b\u306e\u51e6\u7406\u306f\u300c222.501.285.45\u300d\u3068\u3044\u3063\u305fIP\u30a2\u30c9\u30ec\u30b9\u3067\u884c\u308f\u308c\u308b\u3068\u3044\u3046\u70b9\u306f\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306e\u30b5\u30fc\u30d0\u30fc\u3068\u3088\u304f\u4f3c\u3066\u3044\u307e\u3059\uff08<a href=\"https:\/\/kinqsta.com\/jp\/blog\/what-is-dns\/\">\u8a73\u3057\u3044\u4ed5\u7d44\u307f\u306f\u3053\u3061\u3089<\/a>\uff09\u3002<\/p>\n<p>\u30dd\u30fc\u30c8\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u540c\u58eb\uff08\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u540c\u58eb\uff09\u304c\u901a\u4fe1\u3059\u308b\u305f\u3081\u306e\u5225\u306e\u624b\u6bb5\u3067\u3059\u3002<\/p>\n<ul>\n<li>IP\u30a2\u30c9\u30ec\u30b9\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3092\u8b58\u5225<\/li>\n<li>\u30dd\u30fc\u30c8\u306fSMTP\u306a\u3069\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u4e0a\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u7279\u5b9a\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30b5\u30fc\u30d3\u30b9\u3092\u8b58\u5225<\/li>\n<\/ul>\n<p>\u4f8b\u3048\u308b\u306a\u3089\u3001IP\u30a2\u30c9\u30ec\u30b9\u306f\u30aa\u30d5\u30a3\u30b9\u8857\u306b\u3042\u308b\u901a\u308a\u306e\u540d\u524d\u3001\u30dd\u30fc\u30c8\u306f\u30aa\u30d5\u30a3\u30b9\u30d3\u30eb\u306e\u4e2d\u306e\u7279\u5b9a\u306e\u4f1a\u793e\u3092\u793a\u3059\u6570\u5b57\u3068\u3044\u3063\u305f\u611f\u3058\u3067\u3059\u3002<\/p>\n<p>\u3042\u308b\u4f1a\u793e\u306b\u4f55\u304b\u3092\u914d\u9054\u3057\u305f\u3044\u5834\u5408\u3001\u305d\u306e\u30aa\u30d5\u30a3\u30b9\u30d3\u30eb\u306e\u4f4f\u6240\u3060\u3051\u3067\u306a\u304f\u3001\u4f1a\u793e\u540d\u307e\u3067\u6307\u5b9a\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>IP\u30a2\u30c9\u30ec\u30b9\u306e\u5272\u308a\u5f53\u3066\u306a\u3069\u3092\u62c5\u3046\u7d44\u7e54\u3067\u3042\u308b<a href=\"https:\/\/www.iana.org\/\">IANA<\/a>\uff08Internet Assigned Numbers Authority\uff09\u306f\u3001SMTP\u3092\u542b\u3080\u4e00\u822c\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30b5\u30fc\u30d3\u30b9\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u767b\u9332\u3082\u62c5\u5f53\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"why\">SMTP\u30dd\u30fc\u30c8\u306e\u91cd\u8981\u6027<\/h2>\n<p>SMTP\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3059\u308b\u969b\u306b\u306f\u3001IP\u30a2\u30c9\u30ec\u30b9\u3068\u30dd\u30fc\u30c8\u756a\u53f7\u306e\u4e21\u65b9\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u4e00\u822c\u7684\u306aSMTP\u30dd\u30fc\u30c8\u306f\u8907\u6570\u3042\u308a\uff08\u3053\u308c\u306b\u3064\u3044\u3066\u306f\u5f8c\u307b\u3069\uff09\u3001\u305d\u306e\u3059\u3079\u3066\u304c\u3059\u3079\u3066\u306e\u72b6\u6cc1\u306b\u4f7f\u7528\u3067\u304d\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u4f8b\u3048\u3070\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u3084\u308a\u53d6\u308a\u3092\u3059\u308b\u305f\u3081\u306e\u6a19\u6e96\u7684\u306aSMTP\u30dd\u30fc\u30c8\u3067\u3042\u308b25\u756a\u30dd\u30fc\u30c8\u306f\u3001ISP\u3084\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\uff08Kinsta\u304c\u63a1\u7528\u3059\u308bGoogle Cloud Platform\u306a\u3069\uff09\u306b\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u591a\u304f\u306e\u30b5\u30fc\u30d3\u30b9\u304c25\u756a\u30dd\u30fc\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001\u3053\u306e\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066SMTP\u30b5\u30fc\u30d0\u30fc\u306b\u63a5\u7d9a\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>\u5404SMTP\u30dd\u30fc\u30c8\u306e\u76ee\u7684<\/h3>\n<p>SMTP\u30dd\u30fc\u30c8\u306b\u306f\u3001\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u76ee\u7684\u304c\u5b58\u5728\u3057\u3001SMTP\u306e\u4f1d\u9054\u306b\u306f\u4e3b\u306b2\u3064\u306e\u6bb5\u968e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3<\/strong>\uff1a\u30e1\u30fc\u30eb\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3002\u4f8b\u3048\u3070Apple Mail\u3067\u30e1\u30fc\u30eb\u3092\u66f8\u3044\u3066\u9001\u308b\u969b\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u307e\u305a\u9001\u4fe1\u7528\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3055\u308c\u308b\u3002<\/li>\n<li><strong>\u30ea\u30ec\u30fc<\/strong>\uff1a2\u3064\u306e\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8ee2\u9001\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3002\u9001\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u30e1\u30fc\u30eb\u304c\u9001\u3089\u308c\u305f\u5f8c\u3001\u30e1\u30fc\u30eb\u304c\u53d7\u53d6\u4eba\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u8ee2\u9001\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n<p>\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3001\u307e\u305f\u306fWordPress\u30b5\u30a4\u30c8\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u969b\u306b\u306f\u3001\u7279\u306b1\u3064\u76ee\u306e\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u3064\u3044\u3066\u6c17\u306b\u306a\u308b\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n<p>\u30ea\u30ec\u30fc\u3082SMTP\u306e\u91cd\u8981\u306a\u90e8\u5206\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u81ea\u5206\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3067\u8a2d\u5b9a\u3092\u884c\u3046\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2 id=\"ports\">\u4e3b\u8981\u306aSMTP\u30dd\u30fc\u30c8<\/h2>\n<p>\u4eca\u65e5\u3001\u8907\u6570\u306eSMTP\u30dd\u30fc\u30c8\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\u3002\u4e3b\u8981\u306aSMTP\u30dd\u30fc\u30c8\u306f\u4ee5\u4e0b\u306e4\u7a2e\u985e\u3067\u3059\u3002<\/p>\n<ul>\n<li>25<\/li>\n<li>587<\/li>\n<li>465<\/li>\n<li>2525<\/li>\n<\/ul>\n<p>\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>25\u756a\u30dd\u30fc\u30c8<\/h3>\n<p>25\u756a\u30dd\u30fc\u30c8\u306f\u30011982\u5e74\u306b\u4f5c\u3089\u308c\u305f\u6700\u3082\u53e4\u3044SMTP\u30dd\u30fc\u30c8\u3067\u3059\u304c\u3001\u73fe\u5728\u3067\u3082\u6a19\u6e96\u7684\u306aSMTP\u30dd\u30fc\u30c8\u3067\u3042\u308a\u3001\u4e3b\u306b<strong>SMTP\u30ea\u30ec\u30fc<\/strong>\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u5148\u306b\u3082\u89e6\u308c\u305f\u901a\u308a\u3001\u591a\u304f\u306eISP\u3084\u30af\u30e9\u30a6\u30c9\u30fc\u30b5\u30fc\u30d0\u30fc\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304b\u3089\u3001WordPress\u30b5\u30a4\u30c8\u3084\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306eSMTP\u306e\u8a2d\u5b9a\u3067\u306f\u300125\u756a\u30dd\u30fc\u30c8\u3092\u9078\u629e\u3057\u306a\u3044\u307b\u3046\u304c\u3044\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3068\u3044\u3046\u306e\u3082\u300125\u756a\u30dd\u30fc\u30c8\u306f\u3001\u60aa\u610f\u306e\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u304c\u30a6\u30a4\u30eb\u30b9\u306b\u611f\u67d3\u3057\u305f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u306e\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001SMTP\u306e\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u30ea\u30ec\u30fc\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u7570\u306a\u308b\u3082\u306e\u3067\u3042\u308a\u300125\u756a\u30dd\u30fc\u30c8\u306f\u30ea\u30ec\u30fc\u5411\u304d\u3067\u3042\u308b\u305f\u3081\u3001\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u306f\u4e0d\u5411\u304d\u3067\u3059\u3002<\/p>\n<h3>587\u756a\u30dd\u30fc\u30c8<\/h3>\n<p>587\u756a\u30dd\u30fc\u30c8\u306f\u3001SMTP\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u7528\u3044\u308b\u30c7\u30d5\u30a9\u30eb\u30c8\u30dd\u30fc\u30c8\u3067\u3059\u3002\u4ed6\u306e\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u304c\u3001\u307e\u305a\u306f587\u756a\u30dd\u30fc\u30c8\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u8a2d\u5b9a\u3057\u3001587\u756a\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3067\u304d\u306a\u3044\u72b6\u6cc1\uff08\u4f7f\u7528\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u30b5\u30fc\u30d3\u30b9\u304c\u4f55\u304b\u3057\u3089\u306e\u7406\u7531\u3067\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u306a\u3069\uff09\u3067\u306e\u307f\u3001\u4ed6\u306e\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>587\u756a\u30dd\u30fc\u30c8\u306f<a href=\"https:\/\/kinqsta.com\/jp\/blog\/tls-vs-ssl\/\">TLS<\/a>\u3082\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u304a\u308a\u3001\u5b89\u5168\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>465\u756a\u30dd\u30fc\u30c8<\/h3>\n<p>465\u756a\u30dd\u30fc\u30c8\u306f\u3001\u3082\u3068\u3082\u3068SMTPS\uff08SSL over SSL\uff09\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u307e\u3057\u305f\u304c\u3001\u305d\u306e\u5f8c\u5225\u306e\u7528\u9014\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u305f\u5f8c\u3001\u975e\u63a8\u5968\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u591a\u304f\u306eISP\u3084\u30af\u30e9\u30a6\u30c9\u30fc\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u3001\u73fe\u5728\u3082SMTP\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u3068\u3057\u3066465\u756a\u30dd\u30fc\u30c8\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>2525\u756a\u30dd\u30fc\u30c8<\/h3>\n<p>2525\u756a\u30dd\u30fc\u30c8\u306f\uff08IETF\u3084IANA\u306b\u8a8d\u8a3c\u3055\u308c\u305f\uff09\u6b63\u5f0f\u306aSMTP\u30dd\u30fc\u30c8\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001587\u756a\u30dd\u30fc\u30c8\u306e\u4ee3\u66ff\u3068\u3057\u3066SMTP\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u306b\u3088\u304f\u4f7f\u7528\u3055\u308c\u308b\u30dd\u30fc\u30c8\u3067\u3001\u591a\u304f\u306eISP\u3084\u30af\u30e9\u30a6\u30c9\u30fc\u30b5\u30fc\u30d0\u30fc\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>587\u756a\u30dd\u30fc\u30c8\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3001\u4ee3\u308f\u308a\u306b2525\u756a\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2 id=\"which\">\u3069\u306eSMTP\u30dd\u30fc\u30c8\u3092\u9078\u629e\u3059\u308b\u3079\u304d\u304b<\/h2>\n<p>\u300c\u3069\u306eSMTP\u30dd\u30fc\u30c8\u3092\u4f7f\u3048\u3070\u3044\u3044\u306e\u304b\u300d\u3068\u3044\u3046\u7591\u554f\u306b\u5bfe\u3059\u308b\u56de\u7b54\u306f\u3001\u3059\u3067\u306b\u4e0a\u3067\u3054\u8aac\u660e\u3057\u305f\u901a\u308a\u3067\u3059\u304c\u3001\u6539\u3081\u3066\u307e\u3068\u3081\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>SMTP\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u305f\u3081\u306bWordPress\u30b5\u30a4\u30c8\u3084\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u8a2d\u5b9a\u3059\u308b\u5834\u5408\u3001\u307e\u305a\u306f<strong>587\u756a\u30dd\u30fc\u30c8<\/strong>\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b5\u30d6\u30df\u30c3\u30b7\u30e7\u30f3\u7528\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306eSMTP\u30dd\u30fc\u30c8\u3067\u3042\u308a\u3001TLS\u3092\u7528\u3044\u305f\u5b89\u5168\u306a\u901a\u4fe1\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u4f55\u3089\u304b\u306e\u7406\u7531\u306b\u3088\u308a\u3001587\u756a\u30dd\u30fc\u30c8\u304c\u4f7f\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001<strong>2525\u756a\u30dd\u30fc\u30c8<\/strong>\u3092\u4f7f\u7528\u3059\u308b\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u6b63\u5f0f\u306b\u8a8d\u8a3c\u3055\u308c\u305fSMTP\u30dd\u30fc\u30c8\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u591a\u304f\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u975e\u63a8\u5968\u3068\u306a\u3063\u305f<strong>465\u756a\u30dd\u30fc\u30c8<\/strong>\u3082\u672a\u3060\u591a\u304f\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u307e\u305a\u306f587\u756a\u30dd\u30fc\u30c8\u3001\u307e\u305f\u306f2525\u756a\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3059\u308b\u306e\u304c\u304a\u52e7\u3081\u3067\u3059\u3002<\/p>\n<p>\u6700\u5f8c\u306b\u3001<strong>25\u756a\u30dd\u30fc\u30c8<\/strong>\u306fSMTP\u30ea\u30ec\u30fc\u306b\u4f7f\u7528\u3055\u308c\u3001\u591a\u304f\u306eISP\u3084\u30af\u30e9\u30a6\u30c9\u30fc\u30b5\u30fc\u30d0\u30fc\u304c\u30d6\u30ed\u30c3\u30af\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u8003\u616e\u3059\u308b\u3068\u3001\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3084WordPress\u30b5\u30a4\u30c8\u306e\u8a2d\u5b9a\u3092\u884c\u3046\u969b\u306b\u306f\u4f7f\u7528\u3057\u306a\u3044\u306e\u304c\u8ce2\u660e\u3067\u3059\u3002<\/p>\n<h3>Kinsta\u3067\u5229\u7528\u53ef\u80fd\u306aSMTP\u30dd\u30fc\u30c8<\/h3>\n<p>Kinsta\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u30dd\u30fc\u30c8\u3092\u304a\u4f7f\u3044\u3044\u305f\u3060\u3051\u307e\u3059\u3002<\/p>\n<ul>\n<li>587<\/li>\n<li>465<\/li>\n<li>2525<\/li>\n<\/ul>\n<p>Kinsta\u306f\u3001Google 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