{"id":446,"date":"2024-05-07T09:07:24","date_gmt":"2024-05-07T01:07:24","guid":{"rendered":"\/blog\/?p=446"},"modified":"2024-05-22T14:55:15","modified_gmt":"2024-05-22T06:55:15","slug":"%e9%82%ae%e4%bb%b6%e5%ae%89%e5%85%a8%e7%af%87%ef%bc%9a%e9%82%ae%e4%bb%b6%e5%8f%8d%e5%9e%83%e5%9c%be%e7%b3%bb%e7%bb%9f%e8%bf%90%e4%bd%9c%e6%9c%ba%e5%88%b6%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/www.mailabc.cn\/blog\/2024\/05\/07\/%e9%82%ae%e4%bb%b6%e5%ae%89%e5%85%a8%e7%af%87%ef%bc%9a%e9%82%ae%e4%bb%b6%e5%8f%8d%e5%9e%83%e5%9c%be%e7%b3%bb%e7%bb%9f%e8%bf%90%e4%bd%9c%e6%9c%ba%e5%88%b6%e7%ae%80%e4%bb%8b\/","title":{"rendered":"\u90ae\u4ef6\u5b89\u5168\u7bc7\uff1a\u90ae\u4ef6\u53cd\u5783\u573e\u7cfb\u7edf\u8fd0\u4f5c\u673a\u5236\u7b80\u4ecb"},"content":{"rendered":"<h2>\u4ec0\u4e48\u662f\u90ae\u4ef6\u53cd\u5783\u573e\u7cfb\u7edf\uff1f<\/h2>\n<section>\n<section>\u90ae\u4ef6\u53cd\u5783\u573e\u7cfb\u7edf\u662f\u4e00\u79cd\u4e13\u95e8\u8bbe\u8ba1\u7528\u4e8e\u68c0\u6d4b\u3001\u8fc7\u6ee4\u548c\u963b\u6b62\u5783\u573e\u90ae\u4ef6\u7684\u6280\u672f\u89e3\u51b3\u65b9\u6848\u3002\u7528\u4e8e\u4fdd\u62a4\u7528\u6237\u7684\u90ae\u7bb1\u514d\u53d7\u672a\u7ecf\u8bf7\u6c42\u7684\u5546\u4e1a\u5e7f\u544a\u3001\u8bc8\u9a97\u4fe1\u606f\u3001\u6076\u610f\u8f6f\u4ef6\u3001\u9493\u9c7c\u653b\u51fb\u548c\u5176\u4ed6\u975e\u7528\u6237\u610f\u613f\u63a5\u6536\u7684\u7535\u5b50\u90ae\u4ef6\u7684\u4fb5\u6270\u3002<\/section>\n<\/section>\n<section><span style=\"font-size: 10pt; color: #808080;\"><em>\u6ce8\uff1a\u5982\u9700\u4e86\u89e3\u56fd\u5185\u4e3b\u6d41\u53cd\u5783\u573e\u7cfb\u7edf\u4ea7\u54c1\uff0c\u6b22\u8fce\u516c\u4f17\u53f7\u7559\u8a00\u3002<\/em><\/span><\/section>\n<section><a href=\"\/blog\/wp-content\/uploads\/2024\/05\/2024050700580090.webp\" rel=\"nofollow\" ><img class=\"aligncenter wp-image-447\" data-original=\"\/blog\/wp-content\/uploads\/2024\/05\/2024050700580090-1024x408.webp\"  alt=\"\" width=\"700\" height=\"279\" \/><\/a><\/p>\n<noscript><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-447\" src=\"\/blog\/wp-content\/uploads\/2024\/05\/2024050700580090-1024x408.webp\" alt=\"\" width=\"700\" height=\"279\" \/><\/a><\/p><\/noscript>\n<p style=\"text-align: center;\"><span style=\"font-size: 8pt; color: #808080;\">\u53cd\u5783\u573e\u7cfb\u7edf\u7684\u5e38\u89c1\u90e8\u7f72\u5f62\u5f0f<\/span><\/p>\n<\/section>\n<section><span style=\"color: #808080; font-size: 10pt;\"><em>\u56fe\u7247\u6765\u6e90\uff1a<\/em><\/span><span style=\"color: #808080; font-size: 10pt;\"><em><a href=\"https:\/\/www.cacter.com\/safety_products\/security_gateway\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/www.cacter.com\/safety_products\/security_gateway<\/a><\/em><\/span><\/p>\n<section>\n<h2><strong>\u90ae\u4ef6\u53cd\u5783\u573e\u7cfb\u7edf\u7684\u5b58\u5728\u5f62\u5f0f<\/strong><\/h2>\n<p>\u90ae\u4ef6\u53cd\u5783\u573e\u7cfb\u7edf\u5b58\u5728\u7684\u5f62\u5f0f\u591a\u6837\uff0c\u53ef\u80fd\u7684\u5f62\u5f0f\u5305\u62ec\u5982\u4e0b\u51e0\u79cd\uff1a<\/p>\n<ul class=\"list-paddingleft-1\">\n<li>\u90ae\u4ef6\u7cfb\u7edf\u4e0a\u9644\u52a0\u7684\u53cd\u5783\u573e\u6a21\u5757\uff0c\u5c5e\u4e8e\u90ae\u4ef6\u7cfb\u7edf\u529f\u80fd\u7684\u4e00\u90e8\u5206\u3002<\/li>\n<li>\u90e8\u7f72\u5728\u90ae\u4ef6\u7cfb\u7edf\u4e4b\u524d\u7684\u72ec\u7acb\u8f6f\u4ef6\u7cfb\u7edf\uff08\u548c\u90ae\u4ef6\u7cfb\u7edf\u5904\u4e8e\u540c\u4e00\u673a\u623f\uff09\u3002<\/li>\n<li>\u90e8\u7f72\u5728\u90ae\u4ef6\u7cfb\u7edf\u4e4b\u524d\u7684\u72ec\u7acb\u786c\u4ef6\u8bbe\u5907\uff08\u548c\u90ae\u4ef6\u7cfb\u7edf\u5904\u4e8e\u540c\u4e00\u673a\u623f\uff09\u3002<\/li>\n<li>\u4e00\u79cd\u4e91\u670d\u52a1\uff0c\u65e0\u9700\u90e8\u7f72\u5728\u5ba2\u6237\u672c\u5730\u673a\u623f\uff0c\u5728\u4e91\u7aef\u63d0\u4f9b\u53cd\u5783\u573e\u80fd\u529b\u3002<\/li>\n<li>\u7528\u6237\u7535\u8111\u7ec8\u7aef\u4e2d\u7531\u5b89\u5168\u9632\u62a4\u8f6f\u4ef6\u63d0\u4f9b\u7684\u5ba2\u6237\u7aef\u53cd\u5783\u573e\u529f\u80fd\uff0c\u8fd9\u79cd\u5f62\u5f0f\u4e0d\u5728\u672c\u6587\u8ba8\u8bba\u8303\u56f4\u3002<\/li>\n<\/ul>\n<section><a href=\"\/blog\/wp-content\/uploads\/2024\/05\/202405070059214.webp\" rel=\"nofollow\" ><img class=\"aligncenter wp-image-448\" data-original=\"\/blog\/wp-content\/uploads\/2024\/05\/202405070059214-1024x408.webp\"  alt=\"\" width=\"700\" height=\"279\" \/><\/a><\/p>\n<noscript><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-448\" src=\"\/blog\/wp-content\/uploads\/2024\/05\/202405070059214-1024x408.webp\" alt=\"\" width=\"700\" height=\"279\" \/><\/a><\/p><\/noscript>\n<p style=\"text-align: center;\"><span style=\"color: #808080; font-size: 8pt;\">\u90ae\u4ef6\u53cd\u5783\u573e\u4e91\u7f51\u5173\u5e38\u89c1\u63a5\u5165\u5f62\u5f0f<\/span><\/p>\n<\/section>\n<section><span style=\"color: #808080; font-size: 10pt;\"><em>\u56fe\u7247\u6765\u6e90\uff1a<\/em><\/span><span style=\"color: #808080; font-size: 10pt;\"><em><a href=\"https:\/\/www.cacter.com\/safety_products\/security_gateway\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/www.cacter.com\/safety_products\/security_gateway<\/a><\/em><\/span><\/p>\n<section>\n<h2><strong>\u53cd\u5783\u573e\u7cfb\u7edf\u5982\u4f55\u53d1\u6325\u4f5c\u7528\uff1f<\/strong><\/h2>\n<p>\u5728\u63a2\u8ba8\u8fd9\u4e2a\u95ee\u9898\u4e4b\u524d\uff0c\u53ef\u4ee5\u5148\u601d\u8003\u4e00\u5c01\u90ae\u4ef6\u662f\u5982\u4f55\u4ece\u7ad9\u70b9A\u6295\u9012\u5230\u7ad9\u70b9B\u7684\uff1f\u5728\u4e4b\u524d\u7684\u6587\u7ae0<a href=\"\/blog\/2024\/04\/11\/smtp%e5%8d%8f%e8%ae%ae%e7%ae%80%e5%8d%95%e4%bb%8b%e7%bb%8d\/\" rel=\"nofollow\" >\u300aSMTP\u534f\u8bae\u7b80\u5355\u4ecb\u7ecd\u300b<\/a>\u4e2d\u4ecb\u7ecd\u4e86\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u7aef\u901a\u8fc7SMTP\u534f\u8bae\u53d1\u4fe1\u7684\u539f\u7406\uff0c\u5176\u5b9e\u4e24\u4e2a\u7ad9\u70b9\u4e4b\u95f4\u53d1\u4fe1\u4e5f\u662f\u901a\u8fc7SMTP\u534f\u8bae\u3002\u5728SMTP\u8fd9\u79cd\u901a\u4fe1\u534f\u8bae\u57fa\u7840\u4e0a\uff0c\u53cd\u5783\u573e\u7cfb\u7edf\u9488\u5bf9\u901a\u4fe1\u8fc7\u7a0b\u4e2d\u5404\u9636\u6bb5\u5bf9\u90ae\u4ef6\u8fdb\u884c\u76f8\u5173\u68c0\u67e5\u3002<\/p>\n<p><a href=\"\/blog\/wp-content\/uploads\/2024\/05\/2024050701011368.png\" rel=\"box\" class=\"fancybox\" rel=\"nofollow\" ><img class=\"aligncenter wp-image-449\" data-original=\"\/blog\/wp-content\/uploads\/2024\/05\/2024050701011368-1024x976.png\"  alt=\"\" width=\"744\" height=\"710\" \/><\/a><\/p>\n<noscript><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-449\" src=\"\/blog\/wp-content\/uploads\/2024\/05\/2024050701011368-1024x976.png\" alt=\"\" width=\"744\" height=\"710\" \/><\/a><\/p><\/noscript>\n<section>\n<p style=\"text-align: center;\"><span style=\"color: #808080; font-size: 8pt;\">\u53cd\u5783\u573e\u7cfb\u7edf\u68c0\u67e5\u9879\u793a\u4f8b<\/span><\/p>\n<p>\u4e24\u4e2a\u7ad9\u70b9\u95f4SMTP\u534f\u8bae\u53d1\u4fe1\u8fc7\u7a0b\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n<ul class=\"list-paddingleft-1\">\n<li><strong>\u5efa\u7acbTCP\u8fde\u63a5<\/strong><\/li>\n<li><strong>EHLO\/HELO<\/strong><\/li>\n<li><strong>MAIL FROM<\/strong><\/li>\n<li><strong>RCPT TO\uff08\u4e00\u4e2a\u6536\u4ef6\u4eba\u5bf9\u5e94\u4e00\u6761\u6307\u4ee4\uff09<\/strong><\/li>\n<li><strong>DATA<\/strong><\/li>\n<li><strong>QUIT<\/strong><\/li>\n<li><strong>\u65ad\u5f00\u8fde\u63a5<\/strong><\/li>\n<\/ul>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u4e00\u5c01\u90ae\u4ef6\u4ece\u53d1\u4fe1\u65b9\u670d\u52a1\u5668\u4f20\u9012\u5230\u6536\u4ef6\u65b9\u670d\u52a1\u5668\u9700\u8981\u5c06\u4e0a\u8ff0\u8fc7\u7a0b\u5b8c\u6574\u8d70\u5b8c\uff0c\u4efb\u4f55\u4e00\u4e2a\u9636\u6bb5\u63d0\u524d\u4e2d\u6b62\uff0c\u90fd\u4f1a\u5bfc\u81f4\u4fe1\u4ef6\u53d1\u9001\u5931\u8d25\u3002\u4e0b\u9762\u5206\u522b\u4ece\u6bcf\u4e2a\u9636\u6bb5\u4ecb\u7ecd\u53cd\u5783\u573e\u7cfb\u7edf\u53ef\u80fd\u53d1\u8d77\u7684\u68c0\u67e5\u3002<\/p>\n<section>\n<section>\n<h3><strong>\u5efa\u7acbTCP\u8fde\u63a5<\/strong><\/h3>\n<\/section>\n<\/section>\n<section>\n<section>\n<section>\u5728\u53d1\u4fe1\u65b9\u4e0e\u6536\u4ef6\u65b9\u90ae\u4ef6\u7cfb\u7edf\u6216\u8005\u53cd\u5783\u573e\u7cfb\u7edf\u5efa\u7acb\u8fde\u63a5\u65f6\uff0c\u53ef\u80fd\u8fdb\u884c\u7684\u68c0\u67e5\u5305\u62ec\uff08\u4e5f\u53ef\u80fd\u548c\u540e\u9762HELO\/EHLO\u9636\u6bb5\u540c\u65f6\u68c0\u67e5\uff09\uff1a<\/p>\n<ul class=\"list-paddingleft-1\">\n<li><strong>IP\u9ed1\u540d\u5355\uff1a<\/strong>\u5982\u679c\u53d1\u4fe1IP\u88ab\u5217\u5165\u9ed1\u540d\u5355\uff0c\u5219\u8fde\u63a5\u4f1a\u76f4\u63a5\u88ab\u65ad\u5f00\u3002<\/li>\n<li><strong>IP\u767d\u540d\u5355\uff1a<\/strong>\u5141\u8bb8\u8fde\u63a5\uff0c\u540e\u7eed\u5c06\u4e0d\u505a\u4efb\u4f55\u53cd\u5783\u573e\u68c0\u67e5\u3002<\/li>\n<li><strong>IP\u8fde\u63a5\u6b21\u6570\uff1a<\/strong>\u5982\u679cIP\u8d85\u8fc7\u8fde\u63a5\u6b21\u6570\u4e0a\u7ebf\uff0c\u5219\u8fde\u63a5\u4f1a\u88ab\u65ad\u5f00\u3002<\/li>\n<li><strong>IP\u540c\u65f6\u8fde\u63a5\u6570\uff1a<\/strong>\u5982\u679cIP\u540c\u65f6\u8fde\u63a5\u7684\u6b21\u6570\u8d85\u8fc7\u9650\u5236\uff0c\u540c\u6837\u4f1a\u88ab\u65ad\u5f00\u3002<\/li>\n<\/ul>\n<\/section>\n<\/section>\n<\/section>\n<section>\n<section>\n<h3><strong>HELO\/EHLO\u9636\u6bb5<\/strong><\/h3>\n<\/section>\n<\/section>\n<section>\n<section>\n<section>\u901a\u8fc7HELO\u6216EHLO\u544a\u77e5\u53d1\u4fe1\u65b9\u670d\u52a1\u5668\u7684\u4e3b\u673a\u57df\u540d\u4fe1\u606f\uff0c\u53ef\u80fd\u8fdb\u884c\u7684\u68c0\u67e5\u5305\u62ec\uff1a<\/p>\n<ul class=\"list-paddingleft-1\">\n<li><strong>\u57df\u540d\u89e3\u6790\u4e00\u81f4\u6027\u68c0\u67e5\uff1a<\/strong>\u68c0\u67e5\u53d1\u4fe1IP\u7684PTR\u8bb0\u5f55\uff0c\u5982\u679cPTR\u8bb0\u5f55\u548c\u58f0\u660e\u7684\u53d1\u4fe1\u670d\u52a1\u5668\u4e0d\u5339\u914d\u6216\u8005\u4e0d\u5b58\u5728PTR\u8bb0\u5f55\uff0c\u53cd\u5783\u573e\u7cfb\u7edf\u4f1a\u6839\u636e\u914d\u7f6e\u91c7\u53d6\u76f8\u5e94\u7684\u7b56\u7565\u3002<\/li>\n<li><strong>RFC\u5408\u89c4\u6027\u68c0\u67e5\uff1a<\/strong>EHLO\u547d\u4ee4\u4e2d\u7684\u57df\u540d\u5e94\u8be5\u7b26\u5408DNS\u547d\u540d\u89c4\u8303\uff0c\u4e14\u4e0d\u5e94\u8be5\u9891\u7e41\u66f4\u6539\u3002<\/li>\n<li><strong>\u53d1\u4fe1IP\u4fe1\u8a89\u68c0\u67e5\uff1a<\/strong>\u5bf9\u53d1\u4ef6\u670d\u52a1\u5668IP\u5730\u5740\u6216\u57df\u540d\u7684\u4fe1\u8a89\u5ea6\u521d\u6b65\u8bc4\u4f30\uff0c\u4f8b\u5982\u901a\u8fc7RBL\u6216\u5176\u4ed6\u4fe1\u8a89\u6570\u636e\u5e93\u5feb\u901f\u67e5\u8be2\u3002<\/li>\n<\/ul>\n<\/section>\n<\/section>\n<\/section>\n<section>\n<section>\n<h3><strong>MAIL FROM\u9636\u6bb5<\/strong><\/h3>\n<\/section>\n<\/section>\n<section>\n<section>\n<section>\u8be5\u9636\u6bb5\u4e3b\u8981\u544a\u8bc9\u6536\u4ef6\u65b9\u670d\u52a1\u5668\u53d1\u4ef6\u4eba\u4fe1\u606f\uff0c\u53ef\u80fd\u8fdb\u884c\u7684\u68c0\u67e5\u5305\u62ec\uff1a<\/p>\n<ul class=\"list-paddingleft-1\">\n<li><strong>RFC\u5408\u89c4\u6027\u68c0\u67e5\uff1a<\/strong>\u68c0\u67e5\u53d1\u4ef6\u4eba\u5730\u5740\u662f\u5426\u7b26\u5408RFC 5321\u7b49\u76f8\u5173SMTP\u6807\u51c6\u7684\u89c4\u5b9a\uff0c\u5305\u62ec\u5730\u5740\u683c\u5f0f\u662f\u5426\u6b63\u786e\u3002<\/li>\n<li><strong>SPF\u68c0\u67e5\uff1a<\/strong>\u4f7f\u7528SPF\u9a8c\u8bc1\u53d1\u4ef6\u4eba\u5730\u5740\u6240\u5728\u7684\u57df\u540d\u662f\u5426\u5141\u8bb8\u8fde\u63a5\u8fc7\u6765\u7684IP\u4ee3\u8868\u5176\u53d1\u9001\u90ae\u4ef6\u3002<\/li>\n<li><strong>\u53d1\u4ef6\u4eba\u9ed1\u540d\u5355\u68c0\u67e5\uff1a<\/strong>\u68c0\u67e5\u53d1\u4ef6\u4eba\u5730\u5740\u662f\u5426\u5b58\u5728\u4e8e\u9ed1\u540d\u5355\u6570\u636e\u5e93\u4e2d\uff0c\u9ed1\u540d\u5355\u4e2d\u7684\u5730\u5740\u901a\u5e38\u662f\u8fc7\u5f80\u786e\u8ba4\u7684\u5783\u573e\u90ae\u4ef6\u53d1\u9001\u8005\u3002<\/li>\n<li><strong>\u53d1\u4ef6\u4eba\u4fe1\u8a89\u5ea6\u8bc4\u4f30\uff1a<\/strong>\u5224\u65ad\u53d1\u4ef6\u4eba\u7684\u90ae\u4ef6\u53d1\u9001\u5386\u53f2\u8bb0\u5f55\u548c\u4fe1\u8a89\u5ea6\uff0c\u5982\u679c\u53d1\u4ef6\u4eba\u5730\u5740\u6216\u5176\u6240\u5728IP\u5730\u5740\u6709\u4e0d\u826f\u8bb0\u5f55\uff0c\u90ae\u4ef6\u670d\u52a1\u5668\u53ef\u80fd\u91c7\u53d6\u9650\u5236\u63aa\u65bd\u3002<\/li>\n<li><strong>\u53d1\u4fe1\u9891\u7387\uff1a<\/strong>\u76d1\u63a7\u53d1\u4ef6\u4eba\u5730\u5740\u53d1\u9001\u90ae\u4ef6\u7684\u901f\u5ea6\u548c\u9891\u7387\uff0c\u5982\u679c\u8d85\u51fa\u6b63\u5e38\u8303\u56f4\uff0c\u53ef\u80fd\u662f\u5783\u573e\u90ae\u4ef6\u53d1\u9001\u8005\u7684\u5178\u578b\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<\/section>\n<\/section>\n<\/section>\n<section>\n<section>\n<h3><strong>RCPT TO\u9636\u6bb5<\/strong><\/h3>\n<\/section>\n<\/section>\n<section>\n<section>\n<section>\u5728RCPT TO\u9636\u6bb5\u90ae\u4ef6\u670d\u52a1\u5668\u4f1a\u9488\u5bf9\u6536\u4ef6\u4eba\u5730\u5740\u6267\u884c\u4e00\u7cfb\u5217\u53cd\u5783\u573e\u90ae\u4ef6\u68c0\u67e5\uff0c\u8fd9\u4e9b\u68c0\u67e5\u53ef\u80fd\u5305\u62ec\uff1a<\/p>\n<ul 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