{"id":636,"date":"2025-02-28T11:30:37","date_gmt":"2025-02-28T02:30:37","guid":{"rendered":"https:\/\/ec2-54-238-200-5.ap-northeast-1.compute.amazonaws.com\/blog\/?p=636"},"modified":"2026-03-12T11:28:09","modified_gmt":"2026-03-12T02:28:09","slug":"smtp%e3%83%aa%e3%83%ac%e3%83%bc%e3%82%b5%e3%83%bc%e3%83%93%e3%82%b9%e3%80%90%e5%85%a5%e9%96%80%e3%80%91","status":"publish","type":"post","link":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=636","title":{"rendered":"SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u5165\u9580"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/20250227.png\" alt=\"SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u5165\u9580\" width=\"100%\" class=\"aligncenter size-full wp-image-18818\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/20250227.png 650w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/20250227-300x185.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/20250227-225x139.png 225w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/p>\n<blockquote>\n<p>\u3053\u306e\u8a18\u4e8b\u306f <a href=\"https:\/\/sendgrid.com\/en-us\/blog\/smtp-relay-service-basics\" target=\"_blank\">SMTP Relay Service: What Is SMTP Relay and How Does It Work?<\/a> \u306e\u6284\u8a33\u3067\u3059\u3002<\/p>\n<\/blockquote>\n<p>\u4f01\u696d\u3068\u9867\u5ba2\u306e\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u30e1\u30fc\u30eb\u306f\u91cd\u8981\u3067\u3059\u3002\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3084\u6ce8\u6587\u78ba\u8a8d\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u30ea\u30bb\u30c3\u30c8\u306a\u3069\u3001\u3069\u306e\u3088\u3046\u306a\u30e1\u30fc\u30eb\u3067\u3082\u3001\u78ba\u5b9f\u306b\u5c4a\u3051\u3089\u308c\u308b\u304b\u3069\u3046\u304b\u304c\u9867\u5ba2\u3068\u306e\u95a2\u4fc2\u6027\u3092\u5de6\u53f3\u3057\u307e\u3059\u3002<br \/>\n\u3067\u306f\u3001\u5c4a\u304f\u30e1\u30fc\u30eb\u3068\u5c4a\u304b\u306a\u3044\u30e1\u30fc\u30eb\u306b\u306f\u3069\u306e\u3088\u3046\u306a\u5dee\u304c\u3042\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u305d\u306e\u30ab\u30ae\u3092\u63e1\u308b\u306e\u304c\u300cSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u300d\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3068\u306f\u4f55\u304b\u3001\u3069\u306e\u3088\u3046\u306a\u610f\u7fa9\u304c\u3042\u308b\u306e\u304b\u3001\u30c8\u30e9\u30d6\u30eb\u306b\u76f4\u9762\u3057\u305f\u3068\u304d\u306b\u3069\u3046\u3059\u308c\u3070\u826f\u3044\u304b\u306a\u3069\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>SMTP\u3068\u306f\uff1f<\/h3>\n<p>\u300cSMTP\u300d\u306f Simple Mail Transfer Protocol \u306e\u7565\u3067\u3001\u4e16\u754c\u4e2d\u306e\u307b\u3068\u3093\u3069\u306e\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002\u30e1\u30fc\u30eb\u914d\u4fe1\u30b5\u30fc\u30d3\u30b9\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u304d\u306b\u306f\u3001\u8a2d\u5b9a\u3055\u308c\u305f\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a\u3057\u3001SMTP\u3067\u901a\u4fe1\u3057\u307e\u3059\u3002\u30b5\u30fc\u30d0\u3068\u306e\u901a\u4fe1\u304c\u3067\u304d\u3066\u306f\u3058\u3081\u3066\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u308f\u304b\u308a\u3084\u3059\u304f\u90f5\u4fbf\u306b\u306a\u305e\u3089\u3048\u308b\u3068\u3001\u30b5\u30fc\u30d0\u306f\u90f5\u4fbf\u5c40\u306b\u4f8b\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u624b\u7d19\u3092\u9001\u308b\u306b\u306f\u3001\u5c01\u7b52\u306b\u5b9b\u5148\u3068\u5dee\u51fa\u4eba\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002\u5730\u5143\u306e\u90f5\u4fbf\u5c40\u306f\u3001\u5b9b\u5148\u306b\u4e00\u756a\u8fd1\u3044\u90f5\u4fbf\u5c40\u3092\u8abf\u3079\u3001\u305d\u3053\u306b\u624b\u7d19\u3092\u9001\u308a\u307e\u3059\u3002<br \/>\n\u30e1\u30fc\u30eb\u306e\u5834\u5408\u3082\u540c\u3058\u3067\u3001\u9001\u4fe1\u306b\u306f\u5b9b\u5148\u3068\u5dee\u51fa\u4eba\u60c5\u5831\uff08\u9001\u4fe1\u5143\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3001IP\u30a2\u30c9\u30ec\u30b9\u3001\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306a\u3069\uff09\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u60c5\u5831\u304c\u306a\u3044\u3068\u3001\u30ed\u30fc\u30ab\u30eb\u30b5\u30fc\u30d0\u306f\u53d7\u4fe1\u8005\u5074\u306e\u30b5\u30fc\u30d0\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/iStock-1272298806-960x410.jpg\" alt=\"SMTP\u3068\u306f\uff1f\" width=\"100%\" class=\"aligncenter size-full wp-image-18813\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/iStock-1272298806-960x410.jpg 960w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/iStock-1272298806-960x410-300x128.jpg 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2025\/02\/iStock-1272298806-960x410-768x328.jpg 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/p>\n<h3>SMTP\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u3068\u306f\uff1f<\/h3>\n<p>SMTP\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u3068\u306f\u3001\u30e1\u30fc\u30eb\u3092\u3042\u308b\u30b5\u30fc\u30d0\u304b\u3089\u5225\u306e\u30b5\u30fc\u30d0\u3078\u8ee2\u9001\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001\u4f1a\u793eA\u306e\u4eba\u304c\u4f1a\u793eB\u306e\u4eba\u306b\u30e1\u30fc\u30eb\u3092\u9001\u308b\u5834\u5408\u3001\u30e1\u30fc\u30eb\u306f\u307e\u305a\u4f1a\u793eA\u306eSMTP\u30b5\u30fc\u30d0\u306b\u9001\u3089\u308c\u3001\u305d\u306e\u5f8c\u4f1a\u793eB\u306e\u30b5\u30fc\u30d0\u306b\u8ee2\u9001\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001\u7279\u5b9a\u306e\u30b5\u30fc\u30d0\u304c\u5225\u306e\u30b5\u30fc\u30d0\u304b\u3089\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u3092\u300c\u30ea\u30ec\u30fc\u300d\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u540c\u4e00\u30c9\u30e1\u30a4\u30f3\u9593\u3067\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3059\u308b\u5834\u5408\u3001\u4ed6\u306e\u30b5\u30fc\u30d0\u306f\u95a2\u4e0e\u3057\u306a\u3044\u306e\u3067\u300c\u30ea\u30ec\u30fc\u300d\u3068\u306f\u8a00\u3044\u307e\u305b\u3093\u3002\u3053\u308c\u306f\u3001\u540c\u3058\u753a\u5185\u306b\u3044\u308b\u4eba\u306b\u624b\u7d19\u3092\u9001\u308b\u306e\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002\u624b\u7d19\u3092\u53d7\u3051\u4ed8\u3051\u305f\u90f5\u4fbf\u5c40\u306f\u3001\u4ed6\u306e\u90f5\u4fbf\u5c40\u306b\u306f\u9001\u3089\u305a\u306b\u76f4\u63a5\u5b9b\u5148\u306b\u914d\u9054\u3059\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n<h4>\u30d1\u30d6\u30ea\u30c3\u30afSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u3068\u306f\uff1f<\/h4>\n<p>SMTP\u30ea\u30ec\u30fc\u3092\u3059\u308b\u30b5\u30fc\u30d0\u306e1\u3064\u306b\u3001\u7121\u6599\u3067\u5229\u7528\u3067\u304d\u308b\u300c\u30d1\u30d6\u30ea\u30c3\u30afSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u300d\u3068\u3044\u3046\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u591a\u304f\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u3068\u3057\u30661\u65e5\u3042\u305f\u308a\u306eSMTP\u30ea\u30ec\u30fc\u6570\u306b\u4e0a\u9650\u3092\u8a2d\u3051\u3066\u304a\u308a\u3001\u7121\u6599\u3067\u4f7f\u7528\u3067\u304d\u308b\u53cd\u9762\u3001\u5927\u91cf\u914d\u4fe1\u306f\u3067\u304d\u307e\u305b\u3093\u3002<br \/>\n\u5927\u91cf\u914d\u4fe1\u3092\u3059\u308b\u5834\u5408\u306f\u3001\u5c02\u7528\u306eSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h4>SMTP\u8a8d\u8a3c\u3068\u306f\uff1f<\/h4>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=14541\" rel=\"noopener\" target=\"_blank\">SMTP\u8a8d\u8a3c<\/a>\uff08SMTP AUTH\uff09\u3068\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304cSMTP\u30b5\u30fc\u30d0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u8a8d\u8a3c\u3092\u884c\u3046\u3001SMTP\u306e\u62e1\u5f35\u6a5f\u80fd\u3067\u3059\u3002SMTP\u8a8d\u8a3c\u304c\u5c0e\u5165\u3055\u308c\u305fSMTP\u30ea\u30ec\u30fc\u3067\u306f\u3001\u30e1\u30fc\u30eb\u3092\u4e2d\u7d99\u3059\u308b\u524d\u306b\u9001\u4fe1\u8005\u306e\u8a8d\u8a3c\u60c5\u5831\u3092\u78ba\u8a8d\u3057\u3001\u7b2c\u4e09\u8005\u306b\u3088\u308b\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3044\u3067\u3044\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u8ab0\u3082\u304c\u5229\u7528\u53ef\u80fd\u306a\u300c\u30aa\u30fc\u30d7\u30f3\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u300d\u306b\u306f\u3053\u306e\u3088\u3046\u306a\u4ed5\u7d44\u307f\u304c\u306a\u3044\u305f\u3081\u3001\u60aa\u7528\u3055\u308c\u3084\u3059\u3044\u306e\u304c\u73fe\u72b6\u3067\u3059\u3002SMTP\u8a8d\u8a3c\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u304b\u3089\u30b5\u30fc\u30d0\u3092\u4fdd\u8b77\u3059\u308b\u3068\u540c\u6642\u306b\u3001\u4fe1\u983c\u3067\u304d\u308b\u30e6\u30fc\u30b6\u304c\u5b89\u5168\u306b\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3059\u308b\u305f\u3081\u306e\u6a5f\u80fd\u3067\u3059\u3002<\/p>\n<h4>SMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\u3068\u306f\uff1f<\/h4>\n<p>SMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\u3068\u306f\u3001\u9001\u4fe1\u30e1\u30fc\u30eb\u3092\u4e2d\u7d99\u3059\u308bSMTP\u30b5\u30fc\u30d0\u306e\u30db\u30b9\u30c8\u540d\u3084IP\u30a2\u30c9\u30ec\u30b9\u3092\u793a\u3059\u60c5\u5831\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3084\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u306f\u3001SMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>SMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\u306b\u3064\u3044\u3066\u77e5\u3063\u3066\u304a\u304f\u3079\u304d\u3053\u3068\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30d5\u30a9\u30fc\u30de\u30c3\u30c8<\/strong>\uff1a\u4e00\u822c\u306b\u3001smtp.domain.com\u307e\u305f\u306fmail.domain.com\u306e\u3088\u3046\u306a\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3067\u8868\u73fe\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u3069\u3053\u3067\u78ba\u8a8d\u3067\u304d\u308b\u304b<\/strong>\uff1a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u304c\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u8a2d\u5b9a\u753b\u9762\u3084\u30d7\u30ed\u30d0\u30a4\u30c0\u306e\u30de\u30cb\u30e5\u30a2\u30eb\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>SMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\u306e\u4f8b<\/strong>\uff1a\u4e00\u822c\u7684\u306a\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u306e\u4f8b\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<ul style=\"list-style-type:circle;margin-left:20px;margin-bottom:0px;\">\n<li><strong>Gmail<\/strong>\uff1asmtp.gmail.com<\/li>\n<li><strong>Outlook \/ Hotmail<\/strong>\uff1asmtp-mail.outlook.com<\/li>\n<li><strong>Yahoo!\u30e1\u30fc\u30eb<\/strong>\uff1asmtp.mail.yahoo.co.jp<\/li>\n<\/ul>\n<li><strong>\u30dd\u30fc\u30c8\u756a\u53f7<\/strong>\uff1a\u901a\u5e38\u3001SMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\u306f\u7279\u5b9a\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u3068\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u30dd\u30fc\u30c8\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/li>\n<ul style=\"list-style-type:circle;margin-left:20px;margin-bottom:0px;\">\n<li>25\uff1a\u6a19\u6e96\u7684\u306a\u30dd\u30fc\u30c8\uff08\u500b\u4eba\u5411\u3051ISP\u304b\u3089\u306f\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\uff09<\/li>\n<li>465\uff1aSMTPS\uff08SSL\u6697\u53f7\u4ed8\u304dSMTP\uff09<\/li>\n<li>587\uff08\u63a8\u5968\uff09\uff1aSTARTTLS\uff08TLS\u6697\u53f7\u4ed8\u304dSMTP\uff09<\/li>\n<\/ul>\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3078\u306e\u8003\u616e<\/strong>\uff1aSSL\u3082\u3057\u304f\u306fTLS\u3092\u4f7f\u7528\u3057\u3066\u901a\u4fe1\u3092\u5fc5\u305a\u4fdd\u8b77\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6a5f\u5bc6\u60c5\u5831\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u306f\u7279\u306b\u91cd\u8981\u3067\u3059\u3002<\/li>\n<\/ul>\n<aside>SendGrid\u306e\u3088\u3046\u306aSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u3067\u306f\u306a\u304fSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306eSMTP\u30b5\u30fc\u30d0\u30a2\u30c9\u30ec\u30b9\uff08SendGrid\u306e\u5834\u5408smtp.sendgrid.net\uff09\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u8a73\u3057\u304f\u306f\u300c<a href=\"https:\/\/support.sendgrid.kke.co.jp\/hc\/ja\/articles\/204187885\" rel=\"noopener\" target=\"_blank\">SMTP\u306e\u63a5\u7d9a\u60c5\u5831\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/a>\u300d\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/aside>\n<h3>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3068\u306f\uff1f<\/h3>\n<p>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3068\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u7b2c\u4e09\u8005\u6a5f\u95a2\u3092\u7d4c\u7531\u3057\u3066\u30e1\u30fc\u30eb\u3092\u914d\u4fe1\u3059\u308b\u30b5\u30fc\u30d3\u30b9\u306e\u3053\u3068\u3067\u3001\u4e00\u62ec\u30e1\u30fc\u30eb\u914d\u4fe1\u3084\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u306b\u7279\u5316\u3057\u305f\u3082\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n<p>\u306a\u305c\u3053\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u304c\u5fc5\u8981\u306a\u306e\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>\u307e\u305a\u3001SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001SMTP\u30b5\u30fc\u30d0\u3092\u81ea\u5206\u3067\u7ba1\u7406\u3059\u308b\u5fc5\u8981\u304c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>2\u3064\u76ee\u306e\u7406\u7531\u3068\u3057\u3066\u3001Gmail\u306a\u3069\u306e\u4e00\u822c\u7684\u306aWeb\u30e1\u30fc\u30eb\u306f\u4e00\u5bfe\u4e00\u306e\u3084\u308a\u53d6\u308a\u3092\u524d\u63d0\u3068\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u5927\u91cf\u9001\u4fe1\u306b\u306f\u5411\u304d\u307e\u305b\u3093\u3002\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3084\u901a\u77e5\u30e1\u30fc\u30eb\u3092\u591a\u304f\u9001\u308b\u3088\u3046\u306a\u30d3\u30b8\u30cd\u30b9\u3067\u306f\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u7279\u5316\u3057\u305fSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306e\u610f\u7fa9\u3068\u306f\uff1f<\/h3>\n<p>\u500b\u4eba\u3084\u30d3\u30b8\u30cd\u30b9\u3067\u500b\u5225\u306b\u9001\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u306e\u5834\u5408\u3001\u901a\u5e38\u306f\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u304c1\u901a1\u901a\u7570\u306a\u308a\u3001\u5b9b\u5148\u306e\u6570\u3082\u9650\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u8aa4\u5224\u5b9a\u3055\u308c\u308b\u3053\u3068\u306f\u5c11\u306a\u304f\u3001\u305d\u308c\u307b\u3069\u8907\u96d1\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u4f55\u4e07\u3082\u306e\u5b9b\u5148\u306b\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc\u3092\u9001\u4fe1\u3059\u308b\u5834\u5408\u3084\u3001\u30e6\u30fc\u30b6\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u5bfe\u3057\u3066\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3088\u3046\u306aWeb\u30a2\u30d7\u30ea\u3092\u4f7f\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3069\u3046\u3067\u3057\u3087\u3046\u304b\uff1f<br \/>\n\u3053\u308c\u3089\u306e\u30e1\u30fc\u30eb\u306f\u5185\u5bb9\u304c\u4f3c\u901a\u3063\u3066\u304a\u308a\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u8aa4\u5224\u5b9a\u3055\u308c\u3066\u3057\u307e\u3046\u3053\u3068\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002SendGrid\u3092\u306f\u3058\u3081\u3068\u3057\u305fSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u3053\u3046\u3057\u305f\u554f\u984c\u306b\u5bfe\u51e6\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u666e\u6bb5\u4f7f\u3063\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3092\u5927\u91cf\u914d\u4fe1\u306b\u5229\u7528\u3059\u308b\u3068\u3001\u5230\u9054\u7387\u306f\u4e0b\u304c\u308a\u3001\u5e2f\u57df\u306f\u5727\u8feb\u3055\u308c\u3001\u7121\u95a2\u4fc2\u306a\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u3082\u9045\u5ef6\u3055\u305b\u3066\u3057\u307e\u3044\u307e\u3059\u3002<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=310\" rel=\"noopener\" target=\"_blank\">\u30e1\u30fc\u30eb\u304c\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u632f\u308a\u5206\u3051\u3089\u308c\u306a\u3044\u3088\u3046\u306b<\/a>\u30b5\u30fc\u30d0\u3092\u5e38\u306b\u76e3\u8996\u3057\u5bfe\u5fdc\u3057\u7d9a\u3051\u308b\u306e\u306f\u3001\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b\u4e0a\u306b\u3068\u3066\u3082\u56f0\u96e3\u3067\u3059\u3002\u30d3\u30b8\u30cd\u30b9\u306e\u6210\u9577\u306b\u5408\u308f\u305b\u3066\u30e1\u30fc\u30eb\u306e\u91cf\u3082\u5897\u3048\u3066\u3044\u304d\u307e\u3059\u3002\u305d\u306e\u5ea6\u306b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3092\u5897\u5f37\u3057\u3066\u3044\u3066\u306f\u3001\u3055\u3089\u306b\u624b\u9593\u3082\u30b3\u30b9\u30c8\u3082\u304b\u304b\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u30a2\u30a6\u30c8\u30bd\u30fc\u30b7\u30f3\u30b0\u3059\u308c\u3070\u3001\u666e\u6bb5\u306e\u30e1\u30fc\u30eb\u306e\u3084\u308a\u53d6\u308a\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3059\u3053\u3068\u306a\u304f\u3001\u30e1\u30fc\u30eb\u306e\u5927\u91cf\u914d\u4fe1\u3084\u81ea\u52d5\u914d\u4fe1\u3092\u884c\u3048\u307e\u3059\u3002\u307e\u305f\u3001SendGrid\u3067\u3042\u308c\u3070\u3001\u7d44\u7e54\u306e\u6210\u9577\u306b\u5408\u308f\u305b\u3066\u67d4\u8edf\u306b\u30b9\u30b1\u30fc\u30eb\u3092\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h3>\n<p>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u7528\u3059\u308b\u3068\u30e1\u30fc\u30eb\u914d\u4fe1\u3092\u52b9\u7387\u5316\u3067\u304d\u307e\u3059\u304c\u3001\u4f7f\u7528\u3057\u306a\u3044\u5834\u5408\u3068\u540c\u69d8\u3001\u554f\u984c\u306b\u76f4\u9762\u3059\u308b\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001\u6700\u3082\u4e00\u822c\u7684\u306a\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u30d2\u30f3\u30c8\u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h4>\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3057\u307e\u3063\u305f<\/h4>\n<p>\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3092\u30d6\u30ed\u30c3\u30af\u3059\u308b\u305f\u3081\u3001ISP\u306f\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u6642\u306b<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=11357\" rel=\"noopener\" target=\"_blank\">\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8<\/a>\u3092\u53c2\u7167\u3057\u307e\u3059\u3002\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u304c\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u308b\u3068\u3001\u30e1\u30fc\u30eb\u914d\u4fe1\u306b\u5927\u304d\u306a\u5f71\u97ff\u304c\u53ca\u3073\u307e\u3059\u3002\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u306a\u3044\u305f\u3081\u306e\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li><strong>\u65e5\u9803\u304b\u3089IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u76e3\u8996\u3059\u308b<\/strong>\uff1a<a href=\"https:\/\/senderscore.org\/\" rel=\"noopener\" target=\"_blank\">SenderScore<\/a>\u3001<a href=\"https:\/\/talosintelligence.com\/\" rel=\"noopener\" target=\"_blank\">Talos Intelligence<\/a>\u3001<a href=\"https:\/\/mxtoolbox.com\/\" rel=\"noopener\" target=\"_blank\">MXToolbox<\/a>\u306a\u3069\u306e\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=14407\" rel=\"noopener\" target=\"_blank\">IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3<\/a>\uff08\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u306e\u4fe1\u983c\u5ea6\uff09\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3089\u306e\u30c4\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u3068\u3001IP\u30a2\u30c9\u30ec\u30b9\u304c\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u305f\u6642\u306b\u30a2\u30e9\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=15531\" rel=\"noopener\" target=\"_blank\">IP\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7<\/a>\u3092\u3059\u308b<\/strong>\uff1a\u65b0\u3057\u3044IP\u30a2\u30c9\u30ec\u30b9\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3068\u304d\u306f\u3001\u5c11\u306a\u3044\u901a\u6570\u304b\u3089\u59cb\u3081\u3001\u5f90\u3005\u306b\u5897\u3084\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u305d\u3046\u3059\u308b\u3053\u3068\u3067\u3001IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=8893\" rel=\"noopener\" target=\"_blank\">\u30e1\u30fc\u30eb\u9001\u4fe1\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>\u306b\u5f93\u3046<\/strong>\uff1a\u30b9\u30d1\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u907f\u3051\u3001\u5b9b\u5148\u30ea\u30b9\u30c8\u306e\u8cea\u3092\u4e0b\u3052\u306a\u3044\u3088\u3046<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=11941\" rel=\"noopener\" target=\"_blank\">\u30ea\u30b9\u30c8\u30af\u30ea\u30fc\u30cb\u30f3\u30b0<\/a>\u3092\u3057\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=4619\" rel=\"noopener\" target=\"_blank\">\u30c0\u30d6\u30eb\u30aa\u30d7\u30c8\u30a4\u30f3\u65b9\u5f0f<\/a>\u3092\u63a1\u7528\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306e\u767b\u9332\u89e3\u9664\u7533\u8acb\u3092\u3059\u308b<\/strong>\uff1aIP\u30a2\u30c9\u30ec\u30b9\u304c\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3057\u307e\u3063\u305f\u5834\u5408\u306f\u3001\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306e\u7ba1\u7406\u56e3\u4f53\u306b\u9023\u7d61\u3057\u3001\u767b\u9332\u89e3\u9664\u3092\u8981\u8acb\u3057\u307e\u3057\u3087\u3046\u3002\u305d\u306e\u969b\u3001\u767b\u9332\u306e\u539f\u56e0\u3068\u306a\u3063\u305f\u554f\u984c\u3092\u3069\u306e\u3088\u3046\u306b\u6539\u5584\u3057\u305f\u304b\u3092\u8aac\u660e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n<h4>\u30d0\u30a6\u30f3\u30b9\u7387\u304c\u6025\u4e0a\u6607\u3057\u305f<\/h4>\n<p>\u7121\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3001\u5b9b\u5148\u30b5\u30fc\u30d0\u306e\u969c\u5bb3\u3001ISP\u304b\u3089\u306e\u53b3\u3057\u3044\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0\u306a\u3069\u306b\u3088\u308a\u3001\u30d0\u30a6\u30f3\u30b9\u7387\u304c\u6025\u4e0a\u6607\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u5bfe\u51e6\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u691c\u8a3c\u3059\u308b<\/strong>\uff1a\u5b9b\u5148\u30ea\u30b9\u30c8\u306b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u524d\u306b\u3001\u691c\u8a3c\u30b5\u30fc\u30d3\u30b9\u3092\u7528\u3044\u3066\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u6709\u52b9\u6027\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u5b9b\u5148\u30ea\u30b9\u30c8\u3092\u6574\u7406\u3059\u308b<\/strong>\uff1a\u4e00\u5b9a\u671f\u9593\u30e1\u30fc\u30eb\u306b\u53cd\u5fdc\u3057\u3066\u3044\u306a\u3044\u975e\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u8cfc\u8aad\u8005\u3092\u3001\u5b9a\u671f\u7684\u306b\u30ea\u30b9\u30c8\u304b\u3089\u524a\u9664\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3068\u983b\u5ea6\u3092\u898b\u76f4\u3059<\/strong>\uff1a\u53d7\u4fe1\u8005\u306e<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=8617\" rel=\"noopener\" target=\"_blank\">\u30e1\u30fc\u30eb\u75b2\u308c<\/a>\u3092\u907f\u3051\u308b\u305f\u3081\u3001\u5185\u5bb9\u3084\u9001\u4fe1\u983b\u5ea6\u304c\u9069\u5207\u3067\u3042\u308b\u3088\u3046\u5fc3\u639b\u3051\u307e\u3057\u3087\u3046\u3002\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=5190\" rel=\"noopener\" target=\"_blank\">mail-tester<\/a>\u3084<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=14778\" rel=\"noopener\" target=\"_blank\">MailGenius<\/a>\u306a\u3069\u306e\u30c4\u30fc\u30eb\u3067\u554f\u984c\u304c\u306a\u3044\u304b\u30c1\u30a7\u30c3\u30af\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u30d0\u30a6\u30f3\u30b9\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u5206\u6790\u3059\u308b<\/strong>\uff1a\u5b9b\u5148\u30b5\u30fc\u30d0\u304b\u3089\u8fd4\u3055\u308c\u308b\u30d0\u30a6\u30f3\u30b9\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u3001\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u3092\u63a2\u308b\u624b\u304c\u304b\u308a\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h4>\u30e1\u30fc\u30eb\u304c\u9045\u5ef6\u3059\u308b<\/h4>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u3001\u30b5\u30fc\u30d0\u306e\u904e\u8ca0\u8377\u3001\u8a2d\u5b9a\u30a8\u30e9\u30fc\u306a\u3069\u306b\u3088\u308a\u3001\u30e1\u30fc\u30eb\u304c\u9045\u5ef6\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u969b\u306f\u3001\u4ee5\u4e0b\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<ul>\n<li><strong>\u30b5\u30fc\u30d0\u306e\u8ca0\u8377\u3092\u78ba\u8a8d\u3059\u308b<\/strong>\uff1aSMTP\u30b5\u30fc\u30d0\u304c\u9001\u4fe1\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u904e\u8ca0\u8377\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6301\u7d9a\u7684\u306b\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30ea\u30bd\u30fc\u30b9\u306e\u62e1\u5f35\u3092\u691c\u8a0e\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>\u30e1\u30fc\u30eb\u30b5\u30a4\u30ba\u3092\u6700\u9069\u5316\u3059\u308b<\/strong>\uff1a\u9ad8\u89e3\u50cf\u5ea6\u306e\u753b\u50cf\u3084\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u542b\u3080\u30e1\u30fc\u30eb\u306f\u3001\u914d\u4fe1\u901f\u5ea6\u3092\u9045\u3089\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u8a2d\u5b9a\u3092\u898b\u76f4\u3059<\/strong>\uff1aSMTP\u30b5\u30fc\u30d0\u306e\u8a2d\u5b9a\u304c\u9069\u5207\u3067\u306a\u3044\u3068\u3001\u9045\u5ef6\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u6642\u9593\u3084\u30ea\u30c8\u30e9\u30a4\u306e\u9593\u9694\u3001\u6700\u5927\u30e1\u30c3\u30bb\u30fc\u30b8\u30b5\u30a4\u30ba\u306a\u3069\u306e\u8a2d\u5b9a\u3092\u898b\u76f4\u3057\u307e\u3057\u3087\u3046\u3002<\/li>\n<li><strong>SMTP\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u554f\u3044\u5408\u308f\u305b\u308b<\/strong>\uff1a\u4e0a\u8a18\u3092\u898b\u76f4\u3057\u3066\u3082\u554f\u984c\u304c\u89e3\u6c7a\u3057\u306a\u3044\u5834\u5408\u306f\u3001SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u306b\u554f\u3044\u5408\u308f\u305b\u307e\u3057\u3087\u3046\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u6f5c\u5728\u7684\u306a\u554f\u984c\u3084\u3001\u3059\u3050\u306b\u306f\u308f\u304b\u3089\u306a\u3044\u8a2d\u5b9a\u30a8\u30e9\u30fc\u306b\u3064\u3044\u3066\u6559\u3048\u3066\u304f\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/li>\n<\/ul>\n<h3>SMTP\u30e1\u30fc\u30eb\u30ea\u30ec\u30fc\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h3>\n<h4>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306f\u3069\u306e\u3088\u3046\u306b\u30e1\u30fc\u30eb\u5230\u9054\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u306e\u3067\u3059\u304b\uff1f<\/h4>\n<p>IP\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u7ba1\u7406\u3084\u3001\u9001\u4fe1\u8005\u8a8d\u8a3c\uff08SPF, DKIM, DMARC\u306a\u3069\uff09\u306e\u8a2d\u5b9a\u3001<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=3648\" rel=\"noopener\" target=\"_blank\">\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u30eb\u30fc\u30d7<\/a>\u3084\u30d0\u30a6\u30f3\u30b9\u306e\u51e6\u7406\u306a\u3069\u3092\u652f\u63f4\u3059\u308b\u6a5f\u80fd\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3067\u3001\u5230\u9054\u6027\u306e\u5411\u4e0a\u3092\u56f3\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h4>\u30d1\u30d6\u30ea\u30c3\u30afSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u3068\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u306e\u9055\u3044\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h4>\n<p>\u65e2\u306b\u8ff0\u3079\u305f\u3068\u304a\u308a\u3001\u30d1\u30d6\u30ea\u30c3\u30afSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u306f\u7121\u6599\u3067\u4f7f\u7528\u3067\u304d\u308b\u4e00\u65b9\u3001\u901a\u6570\u5236\u9650\u304c\u3042\u308a\u5b89\u5168\u6027\u3082\u9ad8\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d0\u306f\u3001\u6709\u6599\u3067\u3059\u304c\u5927\u91cf\u9001\u4fe1\u304c\u53ef\u80fd\u3067\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u5230\u9054\u6027\u3092\u9ad8\u304f\u7dad\u6301\u3067\u304d\u307e\u3059\u3002<\/p>\n<h4>SMTP\u30ea\u30ec\u30fc\u3068SMTP\u8a8d\u8a3c\u306f\u540c\u3058\u3067\u3059\u304b\uff1f<\/h4>\n<p>\u3044\u3044\u3048\u3001\u9055\u3044\u307e\u3059\u3002SMTP\u30ea\u30ec\u30fc\u306f\u3001\u3042\u308b\u30b5\u30fc\u30d0\u304b\u3089\u5225\u306e\u30b5\u30fc\u30d0\u3078\u30e1\u30fc\u30eb\u3092\u8ee2\u9001\u3059\u308b\u30d7\u30ed\u30bb\u30b9\u3092\u6307\u3057\u307e\u3059\u3002\u4e00\u65b9\u3001SMTP\u8a8d\u8a3c\u306f\u3001SMTP\u30b5\u30fc\u30d0\u306e\u4e0d\u6b63\u5229\u7528\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u9001\u4fe1\u8005\u306e\u8a8d\u8a3c\u60c5\u5831\uff08\u30e6\u30fc\u30b6\u540d\u3084\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\uff09\u3092\u691c\u8a3c\u3059\u308b\u969b\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n<h4>SMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306f\u3069\u306e\u3088\u3046\u306a\u89b3\u70b9\u3067\u9078\u629e\u3057\u305f\u3089\u3044\u3044\u3067\u3059\u304b\uff1f<\/h4>\n<p>\u9001\u4fe1\u901a\u6570\u3084\u4e88\u7b97\u3001\u5fc5\u8981\u306a\u6a5f\u80fd\u3001\u63d0\u4f9b\u3055\u308c\u308b\u30b5\u30dd\u30fc\u30c8\u306e\u30ec\u30d9\u30eb\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u57fa\u6e96\u3078\u306e\u6e96\u62e0\u306a\u3069\u3092\u8e0f\u307e\u3048\u3066\u3001\u81ea\u793e\u306e\u8981\u4ef6\u306b\u5408\u3063\u305f\u30b5\u30fc\u30d3\u30b9\u3092\u9078\u3073\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>Twilio SendGrid\u306eSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9<\/h3>\n<p>Twilio SendGrid\u306eSMTP\u30ea\u30ec\u30fc\u30b5\u30fc\u30d3\u30b9\u306f\u9ad8\u3044\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u8a87\u308a\u307e\u3059\u3002\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u30b3\u30b9\u30c8\u3092\u304b\u3051\u308b\u3053\u3068\u306a\u304f\u30d3\u30b8\u30cd\u30b9\u30cb\u30fc\u30ba\u306b\u5408\u308f\u305b\u3066\u9001\u4fe1\u901a\u6570\u3092\u5897\u3084\u3059\u3053\u3068\u304c\u3067\u304d\u3001\u3055\u3089\u306b\u3001\u304a\u5ba2\u69d8\u306e\u6d3b\u52d5\u3092\u652f\u63f4\u3059\u308b\u305f\u3081\u306e\u30bb\u30ad\u30e5\u30a2\u306a\u6a5f\u80fd\u3082\u5145\u5b9f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/API_Reference\/Web_API_v3\/index.html\" rel=\"noopener\" target=\"_blank\">Web API<\/a>\u3067\u3042\u308c\u3070\u4ed6\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u9023\u643a\u304c\u5bb9\u6613\u3067\u3001\u305d\u306e\u305f\u3081\u306e<a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/Integrate\/libraries.html\" rel=\"noopener\" target=\"_blank\">\u30e9\u30a4\u30d6\u30e9\u30ea<\/a>\u3084<a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/Integrate\/Code_Examples\/index.html\" rel=\"noopener\" target=\"_blank\">\u30b3\u30fc\u30c9\u30b5\u30f3\u30d7\u30eb<\/a>\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u307b\u304b\u3001\u5f0a\u793e\u3067\u306f\u65e5\u672c\u8a9e\u3067\u306e<a href=\"https:\/\/support.sendgrid.kke.co.jp\/hc\/ja\/articles\/203391995\" rel=\"noopener\" target=\"_blank\">\u30b5\u30dd\u30fc\u30c8<\/a>\u3082\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=14512\" rel=\"noopener\" target=\"_blank\">SMTP\u30b5\u30fc\u30d0\u306e\u5c0e\u5165<\/a>\u306b\u95a2\u3057\u3066\u304a\u60a9\u307f\u306e\u65b9\u306f\u3001\u305c\u3072Twilio SendGrid\u3092<a href=\"https:\/\/sendgrid.kke.co.jp\/app?p=signup.index&#038;utm_source=sg&#038;utm_medium=web&#038;utm_campaign=blog\" rel=\"noopener\" target=\"_blank\">\u304a\u8a66\u3057<\/a>\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u306f SMTP Relay Service: What Is SMTP Relay and How Does It Work? \u306e\u6284\u8a33\u3067\u3059\u3002 \u4f01\u696d\u3068\u9867\u5ba2\u306e\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u30e1\u30fc\u30eb\u306f\u91cd\u8981\u3067\u3059\u3002\u30cb\u30e5\u30fc\u30b9\u30ec\u30bf\u30fc <a class=\"read-more\" href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=636\">&#8230;\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":16011,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[],"class_list":["post-636","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=636"}],"version-history":[{"count":9,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/636\/revisions"}],"predecessor-version":[{"id":20223,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/636\/revisions\/20223"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/16011"}],"wp:attachment":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=636"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=636"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}