{"id":10259,"date":"2024-02-29T15:31:00","date_gmt":"2024-02-29T06:31:00","guid":{"rendered":"https:\/\/help.worksmobile.com\/jp\/?page_id=10259"},"modified":"2025-04-23T12:54:46","modified_gmt":"2025-04-23T03:54:46","slug":"receive-smtp-error-message-when-sending-email","status":"publish","type":"faqs-jp","link":"https:\/\/help.worksmobile.com\/ja\/faqs\/services\/line-works\/mail\/send-mail\/receive-smtp-error-message-when-sending-email\/","title":{"rendered":"\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306bSMTP\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3057\u307e\u3057\u305f"},"content":{"rendered":"<p>LINE WORKS Web \/\u30a2\u30d7\u30ea\u307e\u305f\u306fSMTP\uff08smtp.worksmobile.com\uff09\u3068\u9023\u643a\u3057\u305f\u74b0\u5883\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\uff08BOUNCE\uff09\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u8005\u306b\u8fd4\u4fe1\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u4e8b\u8c61\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u78ba\u8a8d\u3057\u3001\u554f\u984c\u306e\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3066\u9069\u5207\u306a\u63aa\u7f6e\u3092\u304a\u3053\u306a\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u306a\u304a\u3001\u30e1\u30fc\u30eb\u3092\u6b63\u3057\u304f\u9001\u4fe1\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u9001\u4fe1\u5074\u3068\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u305d\u308c\u305e\u308c\u627f\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u305f\u3081\u3001\u30e1\u30fc\u30eb\u306e\u6587\u6cd5\u306b\u554f\u984c\u304c\u306a\u304f\u3066\u3082\u3001\u30e1\u30fc\u30eb\u30b5\u30a4\u30ba\u3001\u9001\u53d7\u4fe1\u306e\u983b\u5ea6\u3001\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306e\u8a2d\u5b9a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u5185\u5bb9\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u8981\u56e0\u306b\u3088\u3063\u3066\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<br clear='none'\/>\n<p>\u30e1\u30fc\u30eb\u9001\u4fe1\u30a8\u30e9\u30fc\u304c\u7d99\u7d9a\u3057\u3066\u767a\u751f\u3057\u3066\u3044\u308b\u72b6\u6cc1\u304c\u7d9a\u304f\u3053\u3068\u3067\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u305d\u306e\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u304c\u4e0b\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u8fc5\u901f\u306b\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<p>SMTP\u30a8\u30e9\u30fc<span style=\"font-size: 8pt; vertical-align: 30%;\">*1<\/span>\u306f\u4ee5\u4e0b\u306e\u5f62\u5f0f\u3067\u51fa\u529b\u3055\u308c\u3001\u305d\u308c\u305e\u308c\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\/\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\/\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u60c5\u5831\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p><u>452 4.5.3 Too many recipients<\/u><\/p>\n<p>SMTP\u30a8\u30e9\u30fc\u306f\u3001\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u3063\u3066\u591a\u5c11\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u305f\u3081\u306b\u3001\u307e\u305aSMTP\u30a8\u30e9\u30fc\u3092\u51fa\u529b\u3057\u305f\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30d8\u30eb\u30d7\u3092\u78ba\u8a8d\u3059\u308b\u304b\u3001<a href=\"https:\/\/help.worksmobile.com\/jp\/topic\/shoot-troubles\/how-to-contact-supports\">\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8<\/a>\u306b\u9023\u7d61\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<br clear='none'\/>\n<ul>\n<li><span style=\"font-size: 14pt;\"><strong>\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9<\/strong><\/span><\/li>\n<\/ul>\n<p>\u767a\u751f\u3057\u305f\u30a8\u30e9\u30fc\u306e\u7a2e\u985e\u30923\u6841\u306e\u6570\u5b57\u3067\u8868\u3057\u307e\u3059\u3002<\/p>\n<p>\u3053\u3053\u3067\u306f\u3001RFC\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u5404\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u306f\u6841\u3054\u3068\u306b\u6b21\u306e\u610f\u5473\u3092\u6301\u3061\u307e\u3059\u3002<\/p>\n<ol>\n<li>1\u6841\u76ee<\/li>\n<\/ol>\n<p>\u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u4e3b\u306b400\uff5e500\u756a\u53f0\u3067\u8868\u793a\u3055\u308c\u3001\u305d\u308c\u305e\u308c\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<p>4xx\uff1a\u4e00\u6642\u7684\u306a\u554f\u984c\u3067\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u901a\u5e38\u3001\u4e00\u5b9a\u6642\u9593\u304c\u7d4c\u904e\u3057\u305f\u5f8c\u306b\u518d\u8a66\u884c\u3059\u308b\u3068\u89e3\u6c7a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u90e8\u306e\u30a8\u30e9\u30fc\u306b\u306f\u8ffd\u52a0\u306e\u51e6\u7f6e\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>5xx\uff1a\u6c38\u4e45\u7684\u306a\u554f\u984c\u3067\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u554f\u984c\u306e\u539f\u56e0\u3092\u89e3\u6c7a\u3057\u3066\u304b\u3089\u3084\u308a\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<br clear='none'\/>\n<ol start=\"2\">\n<li>2\u6841\u76ee<\/li>\n<\/ol>\n<p>x0x\uff08Syntax\uff09 : \u6587\u6cd5\u30a8\u30e9\u30fc<\/p>\n<p>x1x\uff08Information\uff09\uff1a\u30d8\u30eb\u30d7\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u3059\u308b\u30b9\u30c6\u30fc\u30bf\u30b9\u3068\u5fdc\u7b54<\/p>\n<p>x2x\uff08Connections\uff09\uff1a\u901a\u4fe1\u30c1\u30e3\u30cd\u30eb\u306e\u30a8\u30e9\u30fc<\/p>\n<p>x5x\uff08Mail system\uff09: \u53d7\u4fe1\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30a8\u30e9\u30fc<\/p>\n<br clear='none'\/>\n<ol start=\"3\">\n<li>3\u6841\u76ee<\/li>\n<\/ol>\n<p>\u30a8\u30e9\u30fc\u306e\u8a73\u7d30\u30bf\u30a4\u30d7\u306b\u3088\u3063\u3066\u3001\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u30b3\u30fc\u30c9\u306b\u5206\u985e\u3055\u308c\u307e\u3059\u3002<\/p>\n<br clear='none'\/>\n<p>\u4f8b\uff1a<\/p>\n<p>\u4e0a\u8ff0\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u4ee5\u4e0b\u306e\u5fdc\u7b54\u30b3\u30fc\u30c9452\u306f\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30dd\u30ea\u30b7\u30fc\u306b\u3088\u3063\u3066\u4e00\u6642\u7684\u306b\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u304c\u4e2d\u65ad\u3055\u308c\u305f\u5834\u5408\u306b\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><u>452 4.5.3 Too many recipients<\/u><\/p>\n<p>4 \u2013 \u4e00\u6642\u7684\u306a\u969c\u5bb3<\/p>\n<p>5 \u2013 \u53d7\u4fe1\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30a8\u30e9\u30fc<\/p>\n<p>2 \u2013 \u8a73\u7d30\u30bf\u30a4\u30d7\u8b58\u5225\u30b3\u30fc\u30c9<\/p>\n<p>\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<br clear='none'\/>\n<ul>\n<li><span style=\"font-size: 14pt;\"><strong>\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<\/strong><\/span><\/li>\n<\/ul>\n<p>\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306f\u5fdc\u7b54\u30b3\u30fc\u30c9\u306e\u5f8c\u306b\u200b\u200b\u8868\u793a\u3055\u308c\u3001\u8ffd\u52a0\u60c5\u5831\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306e\u6700\u521d\u306e\u6570\u5b57\u306f\u5fdc\u7b54\u30b3\u30fc\u30c9\u306e\u6700\u521d\u306e\u6841\u3068\u4e00\u81f4\u3057\u30012\u756a\u76ee\u306e\u6570\u5b57\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30013\u756a\u76ee\u306e\u6570\u5b57\u306f\u8a73\u7d30\u30bf\u30a4\u30d7\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<p>\u4e3b\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30bf\u30a4\u30d7\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>x.0.x\uff1a\u4e0d\u660e\u306a\u30a8\u30e9\u30fc<\/p>\n<p>x.1.x\uff1a\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<p>x.2.x\uff1a\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<p>x.3.x\uff1a\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<p>x.5.x\uff1a\u30e1\u30fc\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<p>x.6.x\uff1a\u30e1\u30c3\u30bb\u30fc\u30b8\u30b3\u30f3\u30c6\u30f3\u30c4\u307e\u305f\u306f\u30e1\u30c7\u30a3\u30a2\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<p>x.7.x\uff1a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u307e\u305f\u306f\u30dd\u30ea\u30b7\u30fc\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<br clear='none'\/>\n<p>\u4f8b<\/p>\n<p>\u4e0a\u8ff0\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3088\u308a\u3001\u4e0b\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9<span style=\"font-size: 8pt; vertical-align: 30%;\">*2<\/span>\uff084.5.3\uff09\u306f\u3001\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3088\u3063\u3066\u4e00\u6642\u7684\u306b\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u304c\u4e2d\u65ad\u3055\u308c\u305f\u72b6\u614b\u3067\u3042\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<p><u>452 4.5.3 Too many recipients<\/u><\/p>\n<p>4 \u2013 \u4e00\u6642\u7684\u306a\u5931\u6557<\/p>\n<p>5 \u2013 \u30e1\u30fc\u30eb\u8ee2\u9001\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u30b9\u30c6\u30fc\u30bf\u30b9<\/p>\n<p>3 \u2013 \u8a73\u7d30\u30b9\u30c6\u30fc\u30bf\u30b9\u8b58\u5225\u30b3\u30fc\u30c9<\/p>\n<br clear='none'\/>\n<ul>\n<li><span style=\"font-size: 14pt;\"><strong>\u30e1\u30c3\u30bb\u30fc\u30b8<\/strong><\/span><\/li>\n<\/ul>\n<p>\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u4e00\u756a\u5f8c\u308d\u306b\u8868\u793a\u3055\u308c\u3001\u30a8\u30e9\u30fc\u306e\u5177\u4f53\u7684\u306a\u8aac\u660e\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<br clear='none'\/>\n<ul>\n<li><span style=\"font-size: 14pt;\"><strong>\u4e3b\u306aSMTP\u30a8\u30e9\u30fc\u3068\u89e3\u6c7a\u7b56<\/strong><\/span><\/li>\n<\/ul>\n<p>4xx\u307e\u305f\u306f5xx\u756a\u53f0\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\u3092\u53d7\u4fe1\u3057\u305f\u5834\u5408\u306f\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u5e38\u306b\u767a\u4fe1\u3001\u53d7\u4fe1\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u8ffd\u52a0\u60c5\u5831\u3092\u901a\u3058\u3066\u539f\u56e0\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>4xx \u756a\u53f0\u30a8\u30e9\u30fc\u306f\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc\u306e\u305f\u3081\u3001\u7279\u5225\u306a\u51e6\u7f6e\u306a\u3057\u306b\u4e00\u5b9a\u6642\u9593\u5f8c\u306b\u518d\u5ea6\u9001\u4fe1\u3059\u308b\u3068\u89e3\u6c7a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>5xx \u756a\u53f0\u30a8\u30e9\u30fc\u306f\u6c38\u4e45\u7684\u306a\u30a8\u30e9\u30fc\u306e\u305f\u3081\u3001\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3066\u554f\u984c\u3092\u89e3\u6c7a\u3057\u3066\u518d\u9001\u4fe1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u30a8\u30e9\u30fc\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u30e1\u30fc\u30eb\u56fa\u6709\u306e\u8b58\u5225\u5b50\u304c\u8ffd\u52a0\u3067\u8868\u793a\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><u>550 5.1.1 No such user. For more information, go to https:\/\/docs.worksmobile.com\/ml-smtp-error-nw yQIGnbTrmLrqb282aVrA \u2013 nsmtp<\/u><\/p>\n<p>SMTP\u30a8\u30e9\u30fc\u306e\u554f\u984c\u3092<a href=\"https:\/\/help.worksmobile.com\/jp\/topic\/shoot-troubles\/how-to-contact-supports\">\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8<\/a>\u306b\u554f\u3044\u5408\u308f\u305b\u3092\u3059\u308b\u5834\u5408\u306f\u3001\u4e0a\u8ff0\u8a18\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9+\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9+\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u4e21\u65b9\u3092\u4f1d\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>LINE WORKS SMTP\u30b5\u30fc\u30d0\u30fc\u3067\u3088\u304f\u8868\u793a\u3055\u308c\u308b\u30a8\u30e9\u30fc\u3068\u89e3\u6c7a\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u4e0b\u306e\u8868\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<table style=\"width: 98.1658%; height: 916px;\" width=\"699\">\n<tbody>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; background-color: #d9d9d9; height: 24px; text-align: center;\" width=\"274\"><span style=\"font-size: 10pt;\"><strong>SMTP<\/strong><strong>\u30a8\u30e9\u30fc<\/strong><\/span><\/p>\n<p><span style=\"font-size: 10pt;\"><strong>\uff08\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9+\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9+\u30e1\u30c3\u30bb\u30fc\u30b8\uff09<\/strong><\/span><\/td>\n<td style=\"width: 141.749%; background-color: #d9d9d9; height: 24px; text-align: center;\" width=\"425\"><span style=\"font-size: 10pt;\"><strong>\u89e3\u6c7a\u65b9\u6cd5<\/strong><\/span><\/td>\n<\/tr>\n<tr style=\"height: 52px;\">\n<td style=\"width: 38.4431%; height: 52px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.3.2 Too many concurrent connection. This connection will be closed<\/span><\/td>\n<td style=\"width: 141.749%; height: 52px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u540c\u6642\u306b\u63a5\u7d9a\u53ef\u80fd\u306a\u6570\u5024\u3092\u8d85\u3048\u307e\u3057\u305f\u3002\u65e2\u5b58\u306e\u63a5\u7d9a\u3092\u7d42\u4e86\u3057\u3066\u304b\u3089\u518d\u9001\u4fe1\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p>&nbsp;<\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.3.2 Your ip blocked from this server<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u3063\u3066\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305fIP\u3067\u3059\u3002\u4e00\u5b9a\u6642\u9593\u304c\u7d4c\u904e\u3057\u3066\u304b\u3089\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.3.2 RCPT address is temporarily blocked<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u305d\u306e\u53d7\u4fe1\u8005\u306b\u904e\u5ea6\u306b\u591a\u304f\u306e\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u3055\u308c\u3001\u4e00\u6642\u7684\u306b\u30d6\u30ed\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\u3002\u51fa\u8377\u91cf\u3092\u6e1b\u3089\u3057\u3066\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.4.1 Sorry, I wasn't able to establish an SMTP connection<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u63a5\u7d9a\u304c\u4e0d\u5b89\u5b9a\u3067\u3059\u3002\u4e00\u5b9a\u6642\u9593\u304c\u7d4c\u904e\u3057\u3066\u304b\u3089\u518d\u8a66\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.4.5 Server busy, try again later<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u5074\u306e\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc\u304c\u8fd4\u3055\u308c\u307e\u3057\u305f\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.7.1 This email has been temporarily blocked due to suspicious traffic patterns<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u9001\u4fe1\u5074\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002\u9001\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u304b\u3001\u9001\u4fe1\u5074\u30c9\u30e1\u30a4\u30f3\u3067\u306eSPF\u3084DKIM\u3092\u70b9\u691c\u3057\u3066\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">451 4.3.0 Multiple destination domains per transaction is unsupported<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30bb\u30c3\u30b7\u30e7\u30f3\u3054\u3068\u306b\u8907\u6570\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3059\u308b\u53d7\u4fe1\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u884c\u308f\u308c\u307e\u3057\u305f\u3002\u30bb\u30c3\u30b7\u30e7\u30f3\u3054\u3068\u306b1\u3064\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u53d7\u4fe1\u8981\u6c42\u306e\u307f\u3092\u9001\u4fe1\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px; background-color: #fafafa;\" width=\"274\"><span style=\"font-size: 10pt;\">451 4.4.2 Timeout - closing connection<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px; background-color: #fafafa;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3067\u63a5\u7d9a\u3092\u9589\u3058\u307e\u3057\u305f\u3002\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">451 4.7.0 Temporary system error, try again later<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u5074\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u4e00\u6642\u7684\u306a\u30a8\u30e9\u30fc\u3092\u8fd4\u3057\u307e\u3057\u305f\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">452 4.5.3 Too many recipients<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u8005\u6570\u3092\u8d85\u3048\u307e\u3057\u305f\u3002\u53d7\u4fe1\u8005\u3092\u6e1b\u3089\u3057\u3066\u30e1\u30fc\u30eb\u3092\u518d\u9001\u4fe1\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">452 4.5.3 Too many commands<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30bb\u30c3\u30b7\u30e7\u30f3\u3054\u3068\u306b\u5b9f\u884c\u53ef\u80fd\u306a\u547d\u4ee4\u306e\u6570\u3092\u8d85\u3048\u307e\u3057\u305f\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">452 4.7.1 Sent too many messages<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u5236\u9650\u3092\u8d85\u3048\u307e\u3057\u305f\u3002\u4e00\u5b9a\u6642\u9593\u304c\u7d4c\u904e\u3057\u3066\u304b\u3089\u9001\u4fe1\u91cf\u3092\u6e1b\u3089\u3057\u3066\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.1.1 No such user<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u8005\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u30bf\u30a4\u30d7\u30df\u30b9\u3084\u5f62\u5f0f\u306b\u5408\u308f\u305b\u3066\u4f5c\u6210\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.4.4 Sorry, I couldn't find any host by that name<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u8005\u30c9\u30e1\u30a4\u30f3\u306eMX\u30ec\u30b3\u30fc\u30c9\u306f\u6b63\u5e38\u306b\u691c\u7d22\u3055\u308c\u307e\u305b\u3093\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.7.1 Message was blocked as some attached file was not safe<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u5b89\u5168\u3067\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u304c\u6dfb\u4ed8\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.7.1 The mail has been blocked as it contains a file attachment restricted by the administrator<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u7ba1\u7406\u8005\u304c\u5236\u9650\u3057\u305f\u5f62\u5f0f\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u6dfb\u4ed8\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.7.1 Sender rejected because SPF check failed<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">SPF\u8a8d\u8a3c\u306b\u5408\u683c\u3067\u304d\u305a\u30d6\u30ed\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\u3002\u8a73\u3057\u304f\u306f\u3001\uff3bSPF\u30ec\u30b3\u30fc\u30c9\u306e\u8a2d\u5b9a\uff3d\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.7.1 Your mail is classified as SPAM and REJECTED<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30b9\u30d1\u30e0\u30e1\u30fc\u30eb\u3068\u898b\u306a\u3055\u308c\u3001\u30e1\u30fc\u30eb\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3057\u305f\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.7.2 Your email has been blocked because the sender is unauthenticated<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u9001\u4fe1\u5074\u306e\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u307e\u3057\u305f\u3002\u9001\u4fe1\u5074\u30c9\u30e1\u30a4\u30f3\u3067\u306eSPF\u3084DKIM\u3092\u70b9\u691c\u3057\u3066\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.7.1 IP Blocked by Administrator<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u7ba1\u7406\u8005\u306b\u3088\u3063\u3066\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305fIP\u3067\u3059\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">552 5.2.3 Your message exceeded my message size limit<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">LINE WORKS\u306e\u30e1\u30fc\u30eb\u30b5\u30a4\u30ba\u5236\u9650\u3092\u8d85\u3048\u305f\u30e1\u30fc\u30eb\u3067\u3059\u3002\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u3084\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306e\u30b5\u30a4\u30ba\u3092\u5c0f\u3055\u304f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">553 5.1.2 The sender address is not a valid RFC-5321 address<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u9001\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u8aa4\u308a\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5f62\u5f0f\u306b\u5408\u308f\u305b\u3066\u4f5c\u6210\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">553 5.1.2 The recipient address is not a valid RFC-5321 address<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u8aa4\u308a\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u5f62\u5f0f\u306b\u5408\u308f\u305b\u3066\u4f5c\u6210\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 48px;\">\n<td style=\"width: 38.4431%; height: 48px;\" width=\"274\"><span style=\"font-size: 10pt;\">553 5.7.2 The sender address is not a valid RFC-5322 address<\/span><\/td>\n<td style=\"width: 141.749%; height: 48px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u9001\u4fe1\u8005\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u8aa4\u308a\u304c\u3042\u308a\u307e\u3059\u30021\u3064\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u304c\u5f62\u5f0f\u306b\u5408\u308f\u305b\u3066\u4f5c\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">554 5.6.0 Mail message is malformed. Not accepted<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30e1\u30fc\u30eb\u30d8\u30c3\u30c0\u30fc\u306e\u30b5\u30a4\u30ba\u3092\u8d85\u3048\u307e\u3057\u305f\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">554 5.6.0 Too many hops, this message is looping<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30b7\u30b9\u30c6\u30e0\u3067\u6c7a\u3081\u3089\u308c\u305fHop \u306e\u4e0a\u9650\u3092\u8d85\u3048\u307e\u3057\u305f\u3002\u30e1\u30fc\u30eb\u306e\u81ea\u52d5\u8ee2\u9001\u8a2d\u5b9a\u307e\u305f\u306f\u7d4c\u7531\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr style=\"height: 24px;\">\n<td style=\"width: 38.4431%; height: 24px;\" width=\"274\"><span style=\"font-size: 10pt;\">554 5.7.1 The sender address is unauthorized<\/span><\/td>\n<td style=\"width: 141.749%; height: 24px;\" width=\"425\"><span style=\"font-size: 10pt;\">\u30e1\u30fc\u30eb\u306e\u9001\u4fe1\u8005\u60c5\u5831\u304c\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3068\u4e00\u81f4\u3057\u307e\u305b\u3093\u3002<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 38.4431%;\"><span style=\"font-size: 10pt;\">550 5.7.1 Allow inbound gateway IP only<br \/>\n<\/span><\/td>\n<td style=\"width: 141.749%;\"><span style=\"font-size: 10pt;\"><span style=\"font-size: 10pt;\">\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u3092\u7d4c\u7531\u3057\u305f\u30e1\u30fc\u30eb\u3060\u3051\u53d7\u4fe1\u3057\u307e\u3059\u3002\u00a0<\/span><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ee5\u4e0b\u306e2\u3064\u306fLINE WORKS\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u304d\u3001\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u5074\u3068\u306e\u901a\u4fe1\u306b\u5931\u6557\u3057\u305f\u3068\u304d\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<table style=\"width: 98.953%;\" width=\"699\">\n<tbody>\n<tr>\n<td style=\"background-color: #d9d9d9; text-align: center; width: 37.9016%;\" width=\"274\"><span style=\"font-size: 10pt;\"><strong>SMTP<\/strong><strong>\u30a8\u30e9\u30fc\uff08\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9+\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9+\u30e1\u30c3\u30bb\u30fc\u30b8\uff09<\/strong><\/span><\/td>\n<td style=\"background-color: #d9d9d9; text-align: center; width: 108.066%;\" width=\"425\"><span style=\"font-size: 10pt;\"><strong>\u89e3\u6c7a\u65b9\u6cd5<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 37.9016%;\" width=\"274\"><span style=\"font-size: 10pt;\">421 4.4.1 Sorry, I wasn\u2019t able to establish an SMTP connection<\/span><\/td>\n<td style=\"width: 108.066%;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u63a5\u7d9a\u304c\u4e0d\u5b89\u5b9a\u3067\u3059\u3002\u4e00\u5b9a\u6642\u9593\u304c\u7d4c\u904e\u3057\u3066\u304b\u3089\u3082\u3046\u4e00\u5ea6\u8a66\u3057\u3066\u4e0b\u3055\u3044\u3002<\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 37.9016%;\" width=\"274\"><span style=\"font-size: 10pt;\">550 5.4.4 Sorry, I couldn\u2019t find any host by that name<\/span><\/td>\n<td style=\"width: 108.066%;\" width=\"425\"><span style=\"font-size: 10pt;\">\u53d7\u4fe1\u8005\u30c9\u30e1\u30a4\u30f3\u306eMX\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u6b63\u5e38\u306b\u691c\u7d22\u3055\u308c\u307e\u305b\u3093\u3002<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<br clear='none'\/>\n<br clear='none'\/>\n<p><span style=\"font-size: 8pt; vertical-align: 10%;\">*1<\/span><span style=\"font-size: 10pt;\"> SMTP\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/www.ietf.org\/rfc\/rfc5321.txt\">RFC-5321<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n<p><span style=\"font-size: 8pt; vertical-align: 10%;\">*2<\/span><span style=\"font-size: 10pt;\">\u00a0\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001 <a href=\"https:\/\/www.ietf.org\/rfc\/rfc1893.txt\">RFC-1893<\/a>\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/span><\/p>\n","protected":false},"featured_media":0,"parent":349478,"menu_order":14,"template":"","tags":[295],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306bSMTP\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3057\u307e\u3057\u305f - LINE WORKS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/help.worksmobile.com\/ja\/faqs\/services\/line-works\/mail\/send-mail\/receive-smtp-error-message-when-sending-email\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306bSMTP\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3057\u307e\u3057\u305f - LINE WORKS\" \/>\n<meta property=\"og:description\" content=\"LINE WORKS Web \/\u30a2\u30d7\u30ea\u307e\u305f\u306fSMTP\uff08smtp.worksmobile.com\uff09\u3068\u9023\u643a\u3057\u305f\u74b0\u5883\u3067\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\uff08BOUNCE\uff09\u30e1\u30fc\u30eb\u304c\u9001\u4fe1\u8005\u306b\u8fd4\u4fe1\u3055\u308c\u307e\u3059\u3002 \u3053\u306e\u4e8b\u8c61\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306f\u3001\u4ee5\u4e0b\u306e\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u78ba\u8a8d\u3057\u3001\u554f\u984c\u306e\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3066\u9069\u5207\u306a\u63aa\u7f6e\u3092\u304a\u3053\u306a\u3063\u3066\u304f\u3060\u3055\u3044\u3002 \u306a\u304a\u3001\u30e1\u30fc\u30eb\u3092\u6b63\u3057\u304f\u9001\u4fe1\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u9001\u4fe1\u5074\u3068\u53d7\u4fe1\u5074\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304c\u305d\u308c\u305e\u308c\u627f\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 \u305d\u306e\u305f\u3081\u3001\u30e1\u30fc\u30eb\u306e\u6587\u6cd5\u306b\u554f\u984c\u304c\u306a\u304f\u3066\u3082\u3001\u30e1\u30fc\u30eb\u30b5\u30a4\u30ba\u3001\u9001\u53d7\u4fe1\u306e\u983b\u5ea6\u3001\u30d6\u30e9\u30c3\u30af\u30ea\u30b9\u30c8\u306e\u8a2d\u5b9a\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u5185\u5bb9\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u8981\u56e0\u306b\u3088\u3063\u3066\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 \u30e1\u30fc\u30eb\u9001\u4fe1\u30a8\u30e9\u30fc\u304c\u7d99\u7d9a\u3057\u3066\u767a\u751f\u3057\u3066\u3044\u308b\u72b6\u6cc1\u304c\u7d9a\u304f\u3053\u3068\u3067\u3001\u53d7\u4fe1\u30b5\u30fc\u30d0\u30fc\u5074\u3067\u305d\u306e\u30e1\u30fc\u30eb\u306e\u4fe1\u983c\u6027\u304c\u4e0b\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u8fc5\u901f\u306b\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002 SMTP\u30a8\u30e9\u30fc*1\u306f\u4ee5\u4e0b\u306e\u5f62\u5f0f\u3067\u51fa\u529b\u3055\u308c\u3001\u305d\u308c\u305e\u308c\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\/\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\/\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u60c5\u5831\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002 452 4.5.3 Too many recipients SMTP\u30a8\u30e9\u30fc\u306f\u3001\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306b\u3088\u3063\u3066\u591a\u5c11\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 \u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u305f\u3081\u306b\u3001\u307e\u305aSMTP\u30a8\u30e9\u30fc\u3092\u51fa\u529b\u3057\u305f\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306e\u30d8\u30eb\u30d7\u3092\u78ba\u8a8d\u3059\u308b\u304b\u3001\u30ab\u30b9\u30bf\u30de\u30fc\u30b5\u30dd\u30fc\u30c8\u306b\u9023\u7d61\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9 \u767a\u751f\u3057\u305f\u30a8\u30e9\u30fc\u306e\u7a2e\u985e\u30923\u6841\u306e\u6570\u5b57\u3067\u8868\u3057\u307e\u3059\u3002 \u3053\u3053\u3067\u306f\u3001RFC\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002\u5404\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u306f\u6841\u3054\u3068\u306b\u6b21\u306e\u610f\u5473\u3092\u6301\u3061\u307e\u3059\u3002 1\u6841\u76ee \u30e1\u30fc\u30eb\u9001\u4fe1\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u3001\u4e3b\u306b400\uff5e500\u756a\u53f0\u3067\u8868\u793a\u3055\u308c\u3001\u305d\u308c\u305e\u308c\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002 4xx\uff1a\u4e00\u6642\u7684\u306a\u554f\u984c\u3067\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u901a\u5e38\u3001\u4e00\u5b9a\u6642\u9593\u304c\u7d4c\u904e\u3057\u305f\u5f8c\u306b\u518d\u8a66\u884c\u3059\u308b\u3068\u89e3\u6c7a\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u90e8\u306e\u30a8\u30e9\u30fc\u306b\u306f\u8ffd\u52a0\u306e\u51e6\u7f6e\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002 5xx\uff1a\u6c38\u4e45\u7684\u306a\u554f\u984c\u3067\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u554f\u984c\u306e\u539f\u56e0\u3092\u89e3\u6c7a\u3057\u3066\u304b\u3089\u3084\u308a\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002 2\u6841\u76ee x0x\uff08Syntax\uff09 : \u6587\u6cd5\u30a8\u30e9\u30fc 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