{"id":18122,"date":"2024-07-25T11:30:50","date_gmt":"2024-07-25T02:30:50","guid":{"rendered":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=18122"},"modified":"2025-12-24T11:53:06","modified_gmt":"2025-12-24T02:53:06","slug":"%e3%83%a1%e3%83%bc%e3%83%ab%e3%82%a2%e3%83%89%e3%83%ac%e3%82%b9%e6%a4%9c%e8%a8%bc%e3%81%ae%e6%ad%a3%e3%81%97%e3%81%84%e6%96%b9%e6%b3%95%e3%81%a8%e9%81%bf%e3%81%91%e3%82%8b%e3%81%b9%e3%81%8d%e6%96%b9","status":"publish","type":"post","link":"https:\/\/sendgrid.kke.co.jp\/blog\/?p=18122","title":{"rendered":"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u691c\u8a3c\u306e\u6b63\u3057\u3044\u65b9\u6cd5\u3068\u907f\u3051\u308b\u3079\u304d\u65b9\u6cd5"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/240725.png\" alt=\"\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u691c\u8a3c\u306e\u6b63\u3057\u3044\u65b9\u6cd5\u3068\u907f\u3051\u308b\u3079\u304d\u65b9\u6cd5\" width=\"100%\" class=\"aligncenter size-full wp-image-18126\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/240725.png 650w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/240725-300x185.png 300w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/240725-225x139.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\/the-best-and-worst-ways-to-verify-email-addresses\" target=\"_blank\">How to Verify Email Addresses (the Right Way)<\/a> \u306e\u6284\u8a33\u3067\u3059\u3002<\/p>\n<\/blockquote>\n<p>\u307f\u306a\u3055\u3093\u306f\u3001\u53ce\u96c6\u3057\u305f\u5b9b\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u304d\u3061\u3093\u3068\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u304b\uff1f\u53d7\u4fe1\u8005\u306b\u3088\u308b\u8ff7\u60d1\u30e1\u30fc\u30eb\u5831\u544a\u3084\u5230\u9054\u7387\u306e\u4f4e\u4e0b\u3068\u3044\u3063\u305f\u30c8\u30e9\u30d6\u30eb\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u9069\u5207\u306a\u65b9\u6cd5\u3067\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002\u5e38\u306b\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u628a\u63e1\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u3001\u65b0\u3057\u304f\u30b5\u30a4\u30f3\u30a2\u30c3\u30d7\u3057\u305f\u9867\u5ba2\u3068\u3082\u9577\u5e74\u306e\u9867\u5ba2\u3068\u3082\u826f\u597d\u306a\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u53d6\u308a\u3001\u30a8\u30f3\u30b2\u30fc\u30b8\u30e1\u30f3\u30c8\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>Twilio SendGrid\u3067\u306f\u3001\u5358\u7d14\u306a\u30bf\u30a4\u30d7\u30df\u30b9\u304b\u3089\u3001\u4ed6\u8005\u306e\u30ea\u30b9\u30c8\u306b\u308f\u3056\u3068<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=12747\" rel=\"noopener\" target=\"_blank\">\u30b9\u30d1\u30e0\u30c8\u30e9\u30c3\u30d7<\/a>\u3092\u767b\u9332\u3059\u308b\u3088\u3046\u306a\u60aa\u8cea\u306a\u884c\u70ba\u307e\u3067\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u53ce\u96c6\u3059\u308b\u969b\u306e\u69d8\u3005\u306a\u554f\u984c\u3092\u76ee\u306b\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u3067\u306f\u3001\u9001\u4fe1\u8005\u304c\u4e0d\u9069\u5207\u306a\u5b9b\u5148\u306b\u30e1\u30fc\u30eb\u9001\u4fe1\u3057\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3057\u3087\u3046\u304b\u3002\u6700\u3082\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u65b9\u6cd5\u306f\u3001\u5b9a\u671f\u7684\u306b<a href=\"https:\/\/sendgrid.com\/en-us\/blog\/how-to-send-on-brand-confirmation-emails-examples\" rel=\"noopener\" target=\"_blank\">\u78ba\u8a8d\u7528\u30e1\u30fc\u30eb<\/a>\u3092\u9001\u4fe1\u3057\u3001\u53d7\u4fe1\u8005\u304c\u672c\u6587\u306e\u30ea\u30f3\u30af\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3089\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3060\u3068\u5224\u65ad\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u3053\u306e\u65b9\u6cd5\u304c\u5e38\u306b\u6700\u5584\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u77ed\u6642\u9593\u3067\u5b9b\u5148\u30ea\u30b9\u30c8\u306e\u30af\u30ea\u30fc\u30cb\u30f3\u30b0\u3092\u5b8c\u4e86\u3057\u305f\u3044\u5834\u5408\u3084\u3001\u30b5\u30a4\u30f3\u30a2\u30c3\u30d7\u306e\u6642\u70b9\u3067\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u305f\u3044\u5834\u5408\u306a\u3069\u306f\u3001\u5225\u306e\u65b9\u6cd5\u3067\u691c\u8a3c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001SendGrid\u304c\u63a8\u5968\u3059\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u691c\u8a3c\u306e\u6b63\u3057\u3044\u65b9\u6cd5\u3084\u3001\u907f\u3051\u308b\u3079\u304d\u65b9\u6cd5\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\u65b9\u6cd5<\/h3>\n<p>\u5b9b\u5148\u30ea\u30b9\u30c8\u3092\u30af\u30ea\u30fc\u30f3\u306a\u72b6\u614b\u306b\u4fdd\u3064\u3053\u3068\u3067\u3001\u30d0\u30a6\u30f3\u30b9\u7387\u3092\u4e0b\u3052\u3001\u5230\u9054\u7387\u3084\u30a8\u30f3\u30b2\u30fc\u30b8\u30e1\u30f3\u30c8\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u691c\u8a3c\u3059\u308b\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u3001\u305d\u308c\u305e\u308c\u306b\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u307e\u305a\u306f\u6700\u3082\u5b89\u5168\u306a\u65b9\u6cd5\u304b\u3089\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b<\/h4>\n<p>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u6709\u52b9\u6027\u3092\u691c\u8a3c\u3059\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001\u3053\u308c\u307e\u3067\u306b<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=7419\" rel=\"noopener\" target=\"_blank\">BriteVerify<\/a>\u3084<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=9767\" rel=\"noopener\" target=\"_blank\">Kickbox<\/a>\u3068\u3044\u3063\u305f\u30b5\u30fc\u30d3\u30b9\u3092\u7d39\u4ecb\u3057\u3066\u304d\u307e\u3057\u305f\u3002\u691c\u8a3c\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3057\u3066\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u5b58\u5728\u3084\u5b9b\u5148\u30b5\u30fc\u30d0\u306e\u5fdc\u7b54\u306e\u6709\u7121\u306a\u3069\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u5b89\u5168\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u307f\u3092\u5b9b\u5148\u30ea\u30b9\u30c8\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u4e8b\u524d\u6e96\u5099\u3092\u3059\u308b\u3053\u3068\u3067\u3001\u4e0d\u9069\u5207\u306a\u5b9b\u5148\u306b\u30e1\u30fc\u30eb\u9001\u4fe1\u3057\u3066\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\uff08\u4fe1\u983c\u6027\uff09\u3092\u640d\u306a\u3046\u30ea\u30b9\u30af\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3053\u3046\u3044\u3063\u305f\u30b5\u30fc\u30d3\u30b9\u3068\u540c\u7b49\u306e\u6a5f\u80fd\u3068\u3057\u3066\u3001SendGrid\u3067\u306f<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=17715\" rel=\"noopener\" target=\"_blank\">Email Address Validation API<\/a>\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u6a5f\u80fd\u3092\u4f7f\u3046\u3068\u3001\u4e00\u822c\u7684\u306a\u30b9\u30da\u30eb\u30df\u30b9\u3084\u7121\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3001team@company.com\u306e\u3088\u3046\u306a<a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=4445\" rel=\"noopener\" target=\"_blank\">\u30ed\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9<\/a>\u306a\u3069\u3092\u691c\u77e5\u3067\u304d\u307e\u3059\u3002Email Address Validation API\u306b\u3088\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\u306b\u306f\u3001\u3042\u3089\u3086\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30d1\u30bf\u30fc\u30f3\u3092\u5b66\u7fd2\u3055\u305b\u305f\u6a5f\u68b0\u5b66\u7fd2\u30e2\u30c7\u30eb\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u691c\u8a3c\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u306f\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u3067\u3082\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u60aa\u7528\u3092\u7591\u308f\u308c\u308b\u3088\u3046\u306a\u901a\u4fe1\u3092\u884c\u308f\u306a\u3044\u305f\u3081\u3001\u9001\u4fe1\u8005\u3068\u3057\u3066\u306e\u4fe1\u983c\u6027\u3092\u640d\u306a\u3046\u30ea\u30b9\u30af\u304c\u306a\u304f\u3001\u5b89\u5168\u3067\u52b9\u679c\u7684\u306a\u691c\u8a3c\u65b9\u6cd5\u3068\u8a00\u3048\u307e\u3059\u3002\u691c\u8a3c\u5f8c\u3001\u6709\u52b9\u306a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3060\u3051\u306b\u30e1\u30fc\u30eb\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001\u5230\u9054\u7387\u306e\u5411\u4e0a\u3082\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u6709\u52b9\u6027\u306e\u691c\u8a3c\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002\u9ad8\u3044\u30a8\u30f3\u30b2\u30fc\u30b8\u30e1\u30f3\u30c8\u3092\u7dad\u6301\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u958b\u5c01\u7387\u3084\u30af\u30ea\u30c3\u30af\u7387\u3092\u7d99\u7d9a\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>\u907f\u3051\u308b\u3079\u304d\u691c\u8a3c\u65b9\u6cd5<\/h3>\n<p>\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u691c\u8a3c\u65b9\u6cd5\u304c\u3042\u308b\u4e00\u65b9\u3067\u3001\u9001\u4fe1\u8005\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4e0b\u3052\u305f\u308a\u3001\u6b63\u3057\u3044\u7d50\u679c\u304c\u5f97\u3089\u308c\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u691c\u8a3c\u65b9\u6cd5\u3082\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u65b9\u6cd5\u306f\u7406\u8ad6\u7684\u306b\u6b63\u3057\u304f\u3068\u3082\u3001\u610f\u56f3\u3057\u305f\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u5177\u4f53\u7684\u306b\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h4>VRFY\u30b3\u30de\u30f3\u30c9\u3092\u5229\u7528\u3059\u308b<\/h4>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=11638\" rel=\"noopener\" target=\"_blank\">Simple Mail Transfer Protocol\uff08SMTP\uff09<\/a>\u3067\u306f\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u691c\u8a3c\u3059\u308b\u30b3\u30de\u30f3\u30c9\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002SMTP\u30b5\u30fc\u30d0\u3078\u306eTransmission Control Protocol\uff08TCP\uff09\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u958b\u59cb\u3059\u308b\u3068\u3001VRFY\u30b3\u30de\u30f3\u30c9\u3067\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u6709\u7121\u3092\u691c\u8a3c\u3067\u304d\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u30b3\u30de\u30f3\u30c9\u3092\u60aa\u7528\u3059\u308b\u3068\u3001\u30b9\u30d1\u30e0\u9001\u4fe1\u8005\u304c\u7279\u5b9a\u7d44\u7e54\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u7121\u5dee\u5225\u306b\u53ce\u96c6\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u3046\u3057\u305f\u554f\u984c\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u307b\u3068\u3093\u3069\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306fVRFY\u30b3\u30de\u30f3\u30c9\u3092\u62d2\u5426\u3057\u307e\u3059\u3002SMTP\u306e\u4ed5\u69d8\u3068\u3057\u3066\u306f\u691c\u8a3c\u53ef\u80fd\u3067\u3059\u304c\u3001\u5b9f\u7528\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h4>\u30e1\u30fc\u30eb\u9001\u4fe1\u305b\u305a\u306bSMTP\u901a\u4fe1\u3092\u4e2d\u65ad\u3059\u308b<\/h4>\n<p>\u4ee5\u4e0b\u306e\u56f3\u306f\u3001SMTP\u63a5\u7d9a\u6642\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u9593\u306e\u901a\u4fe1\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u901a\u5e38\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\uff08\u5de6\u56f3\uff09\u3067\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u6700\u5f8c\u306bDATA\u30b3\u30de\u30f3\u30c9\u3092\u9001\u4fe1\u3057\u3066\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u9001\u4fe1\u3059\u308b\u6e96\u5099\u304c\u3067\u304d\u305f\u3053\u3068\u3092\u30b5\u30fc\u30d0\u306b\u4f1d\u3048\u307e\u3059\u3002\u7d9a\u3044\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u9001\u4fe1\u3057\u305f\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u30b5\u30fc\u30d0\u304c\u53d7\u3051\u53d6\u308b\u3068\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u4fe1\u306f\u5b8c\u4e86\u3067\u3059\u3002\u305d\u306e\u5f8c\u306f\u3001\u65b0\u3057\u3044\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u304b\u3001QUIT\u30b3\u30de\u30f3\u30c9\u3092\u9001\u3063\u3066\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u9589\u3058\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/Screen-Shot-2020-10-28-at-12.52.42-PM.png\" alt=\"\u30e1\u30fc\u30eb\u9001\u4fe1\u305b\u305a\u306bSMTP\u901a\u4fe1\u3092\u4e2d\u65ad\u3059\u308b\" width=\"100%\" class=\"aligncenter size-full wp-image-18125\" srcset=\"https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/Screen-Shot-2020-10-28-at-12.52.42-PM.png 1214w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/Screen-Shot-2020-10-28-at-12.52.42-PM-278x300.png 278w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/Screen-Shot-2020-10-28-at-12.52.42-PM-768x830.png 768w, https:\/\/sendgrid.kke.co.jp\/blog\/wp\/wp-content\/uploads\/2024\/07\/Screen-Shot-2020-10-28-at-12.52.42-PM-948x1024.png 948w\" sizes=\"(max-width: 1214px) 100vw, 1214px\" \/><\/p>\n<p>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\uff08\u53f3\u56f3\uff09\u3067\u3082\u3001\u30e1\u30fc\u30eb\u9001\u4fe1\u3068\u540c\u3058\u3088\u3046\u306bSMTP\u63a5\u7d9a\u3092\u958b\u59cb\u3057\u307e\u3059\u3002\u7570\u306a\u308b\u306e\u306f\u3001RCPT TO\u30b3\u30de\u30f3\u30c9\uff08\u5b9b\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u8a2d\u5b9a\uff09\u306e\u5fdc\u7b54\u3092\u30b5\u30fc\u30d0\u304b\u3089\u53d7\u3051\u53d6\u3063\u305f\u5f8c\u306e\u3084\u308a\u53d6\u308a\u3067\u3059\u3002\u5fdc\u7b54\u3068\u3057\u3066\u8fd4\u3055\u308c\u308b\u201d\u5f53\u8a72\u30a2\u30c9\u30ec\u30b9\u5b9b\u306b\u30e1\u30fc\u30eb\u9001\u4fe1\u3067\u304d\u308b\u304b\u5426\u304b\u201d\u306e\u7d50\u679c\u3092\u53d6\u5f97\u3057\u305f\u3089\u3001QUIT\u3082\u3057\u304f\u306fRSET\u30b3\u30de\u30f3\u30c9\u3092\u9001\u4fe1\u3059\u308b\u304b\u3001TCP\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u30af\u30ed\u30fc\u30ba\u3057\u3066\u901a\u4fe1\u3092\u7d42\u4e86\u3057\u307e\u3059\u3002DATA\u30b3\u30de\u30f3\u30c9\u3084\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306f\u9001\u4fe1\u3057\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3053\u306e\u65b9\u6cd5\u3067\u306f\u3001\u9001\u4fe1\u8005\u306e\u30ec\u30d4\u30e5\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u4e0b\u3052\u305f\u308a\u3001\u691c\u8a3c\u7528\u306e\u30e1\u30fc\u30eb\u304c\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3068\u898b\u306a\u3055\u308c\u305f\u308a\u3059\u308b\u30ea\u30b9\u30af\u306f\u306a\u304f\u3001\u4e00\u898b\u3059\u308b\u3068\u826f\u3044\u65b9\u6cd5\u306b\u3082\u601d\u3048\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u983b\u7e41\u306b\u691c\u8a3c\u3092\u884c\u3046\u3068\u3001\u7570\u5e38\u306a\u30ed\u30b0\u3068\u3057\u3066\u691c\u77e5\u3055\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u4ecb\u3057\u3066\u901a\u4fe1\u3059\u308bSMTP\u30b5\u30fc\u30d0\u306b\u304a\u3044\u3066\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u53d6\u308b\u524d\u306b\u901a\u4fe1\u304c\u4e2d\u65ad\u3055\u308c\u308b\u3053\u3068\u306f\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u8a66\u884c\u3092\u7e70\u308a\u8fd4\u3059\u3068\u3001\u60aa\u610f\u304c\u3042\u308b\u3068\u898b\u306a\u3055\u308c\u3066IP\u30a2\u30c9\u30ec\u30b9\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>\u591a\u304f\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3084\u30a2\u30f3\u30c1\u30b9\u30d1\u30e0\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u53d7\u3051\u53d6\u308b\u307e\u3067\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\u3092\u4fdd\u7559\u306b\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001RCPT TO\u30b3\u30de\u30f3\u30c9\u3078\u306e\u5fdc\u7b54\u3068\u3057\u3066OK\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u8fd4\u3063\u3066\u3082\u3001\u5fc5\u305a\u3057\u3082\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u6709\u52b9\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u591a\u304f\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306f<a href=\"https:\/\/help.ubuntu.com\/community\/PostfixGreylisting\" rel=\"noopener\" target=\"_blank\">\u30b0\u30ec\u30a4\u30ea\u30b9\u30c8\uff08\u4fdd\u7559\u30ea\u30b9\u30c8\uff09<\/a>\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u672a\u77e5\u306e\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u304c\u63a5\u7d9a\u3092\u8a66\u307f\u308b\u3068\u30b0\u30ec\u30a4\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3057\u3001\u4e00\u5b9a\u306e\u671f\u9593\u306f\u305d\u306e\u9001\u4fe1\u5143\u30b5\u30fc\u30d0\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u30b0\u30ec\u30a4\u30ea\u30b9\u30c8\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u9593\u306fRCPT TO\u30b3\u30de\u30f3\u30c9\u3082\u62d2\u5426\u3055\u308c\u308b\u305f\u3081\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u691c\u8a3c\u306f\u5e38\u306b\u5931\u6557\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h3>\u307e\u3068\u3081<\/h3>\n<p>\u6700\u5f8c\u306b\u3001\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u691c\u8a3c\u3059\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u78ba\u8a8d\u7528\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3057\u307e\u3057\u3087\u3046\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u6709\u52b9\u6027\u3060\u3051\u3067\u306a\u304f\u3001\u53d7\u4fe1\u8005\u304c\u305d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u8208\u5473\u3092\u6301\u3063\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u5b89\u5168\u304b\u3064\u901f\u3084\u304b\u306b\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u306f\u3001SendGrid\u306eEmail Address Validation API\u306e\u3088\u3046\u306a\u691c\u8a3c\u30b5\u30fc\u30d3\u30b9\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/li>\n<li>SMTP\u306eVRFY\u30b3\u30de\u30f3\u30c9\u3092\u5229\u7528\u3057\u305f\u308a\u3001SMTP\u901a\u4fe1\u3092\u4e2d\u65ad\u3057\u305f\u308a\u3059\u308b\u65b9\u6cd5\u306f\u907f\u3051\u307e\u3057\u3087\u3046\u3002\u983b\u7e41\u306b\u691c\u8a3c\u3092\u884c\u3046\u3068\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u30d7\u30ed\u30d0\u30a4\u30c0\u304b\u3089\u60aa\u610f\u306e\u3042\u308b\u9001\u4fe1\u8005\u3068\u898b\u306a\u3055\u308c\u308b\u6050\u308c\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u5fc5\u305a\u3057\u3082\u6b63\u3057\u3044\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<p>\u6700\u3082\u52b9\u679c\u7684\u306a\u65b9\u6cd5\u306f\u3001\u78ba\u8a8d\u7528\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u3068\u691c\u8a3c\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u308b\u30c1\u30a7\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u65b9\u6cd5\u306b\u3088\u3063\u3066\u3001\u30bf\u30a4\u30d7\u30df\u30b9\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u53d7\u4fe1\u8005\u304c\u305d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u671b\u3093\u3067\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u518d\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u5230\u9054\u7387\u3068\u30a8\u30f3\u30b2\u30fc\u30b8\u30e1\u30f3\u30c8\u7387\u306e\u5411\u4e0a\u306b\u3082\u5f79\u7acb\u3064\u3067\u3057\u3087\u3046\u3002<\/p>\n<p><a href=\"https:\/\/sendgrid.kke.co.jp\/docs\/User_Manual_JP\/Email_Address_Validation\/index.html\" rel=\"noopener\" target=\"_blank\">Email Address Validation API<\/a>\u3092\u4f7f\u3063\u3066\u307f\u305f\u3044\u65b9\u306f\u3001\u305c\u3072<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\">\u30a2\u30ab\u30a6\u30f3\u30c8<\/a>\u3092\u53d6\u5f97\u3057\u3066\u304a\u8a66\u3057\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u8a18\u4e8b\u306f How to Verify Email Addresses (the Right Way) \u306e\u6284\u8a33\u3067\u3059\u3002 \u307f\u306a\u3055\u3093\u306f\u3001\u53ce\u96c6\u3057\u305f\u5b9b\u5148\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u6b63\u3057\u3044\u304b\u3069\u3046\u304b\u3092\u304d\u3061\u3093\u3068\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u307e\u3059\u304b\uff1f\u53d7\u4fe1\u8005\u306b\u3088\u308b\u8ff7\u60d1 <a class=\"read-more\" href=\"https:\/\/sendgrid.kke.co.jp\/blog\/?p=18122\">&#8230;\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":18126,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9,11],"tags":[],"class_list":["post-18122","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-best-practices","category-technical"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/18122","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=18122"}],"version-history":[{"count":4,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/18122\/revisions"}],"predecessor-version":[{"id":19859,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/posts\/18122\/revisions\/19859"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=\/wp\/v2\/media\/18126"}],"wp:attachment":[{"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sendgrid.kke.co.jp\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}