{"id":6271,"date":"2026-09-23T10:46:16","date_gmt":"2026-09-23T01:46:16","guid":{"rendered":"https:\/\/blog.eternalsphere.net\/?p=6271"},"modified":"2026-09-23T10:46:16","modified_gmt":"2026-09-23T01:46:16","slug":"18azrjqxz4z9gw6","status":"publish","type":"post","link":"https:\/\/blog.eternalsphere.net\/index.php\/2026\/09\/23\/18azrjqxz4z9gw6\/","title":{"rendered":"\u5728\u81ea\u5efa Mailcow \u90ae\u4ef6\u670d\u52a1\u5668\u4e2d\u4f7f\u7528 SMTP2GO \u89e3\u51b3\u5bb6\u5ead\u5bbd\u5e26\u5916\u53d1\u9650\u5236"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u6700\u5927\u7684\u5438\u5f15\u529b\uff0c\u662f\u53ef\u4ee5\u81ea\u884c\u638c\u63e1\u90ae\u7bb1\u8d26\u6237\u3001\u90ae\u4ef6\u5b58\u50a8\u3001\u57df\u540d\u3001\u53cd\u5783\u573e\u7b56\u7565\u548c Webmail \u7b49\u6838\u5fc3\u80fd\u529b\u3002\u4f46\u771f\u6b63\u90e8\u7f72\u5230\u5bb6\u5ead\u5bbd\u5e26\u73af\u5883\u540e\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e2a\u975e\u5e38\u73b0\u5b9e\u7684\u95ee\u9898\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u90ae\u4ef6\u53ef\u4ee5\u6b63\u5e38\u63a5\u6536\uff0c\u5374\u65e0\u6cd5\u5411 Gmail\u3001Proton Mail\u3001QQ \u90ae\u7bb1\u7b49\u5916\u90e8\u90ae\u4ef6\u670d\u52a1\u5668\u53d1\u9001\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u95ee\u9898\u901a\u5e38\u5e76\u4e0d\u51fa\u5728 Mailcow\u3001Postfix \u6216 DNS\uff0c\u800c\u662f\u4e92\u8054\u7f51\u63a5\u5165\u5546\u9650\u5236\u4e86<strong>\u51fa\u7ad9 TCP 25 \u7aef\u53e3<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO \u8fd9\u7c7b SMTP Relay \u670d\u52a1\uff0c\u53ef\u4ee5\u5728\u4e0d\u653e\u5f03\u81ea\u5efa Mailcow \u7684\u60c5\u51b5\u4e0b\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4e3a\u4ec0\u4e48\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u4f1a\u9047\u5230 TCP 25 \u95ee\u9898<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f20\u7edf\u7535\u5b50\u90ae\u4ef6\u670d\u52a1\u5668\u4e4b\u95f4\u4e3b\u8981\u901a\u8fc7 SMTP TCP 25 \u7aef\u53e3\u901a\u4fe1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193 TCP\/25\nGmail MX<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4e00\u5c01\u90ae\u4ef6\u9700\u8981\u53d1\u9001\u5230\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>user@gmail.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix \u4f1a\u67e5\u8be2 <code>gmail.com<\/code> \u7684 MX \u8bb0\u5f55\uff0c\u7136\u540e\u76f4\u63a5\u8fde\u63a5 Google \u7684\u90ae\u4ef6\u670d\u52a1\u5668\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>gmail-smtp-in.l.google.com:25<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u670d\u52a1\u5668\u673a\u623f\u3001VPS \u7b49\u73af\u5883\u4e2d\uff0c\u8fd9\u901a\u5e38\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f\u5f88\u591a\u5bb6\u5ead\u5bbd\u5e26\u4e3a\u4e86\u51cf\u5c11\u5783\u573e\u90ae\u4ef6\u3001\u611f\u67d3\u6728\u9a6c\u7684\u8bbe\u5907\u53d1\u9001 Spam \u7b49\u95ee\u9898\uff0c\u4f1a\u9650\u5236\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Outbound TCP\/25<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8e\u662f Postfix \u65e5\u5fd7\u53ef\u80fd\u51fa\u73b0\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>connect to xxx:25: Connection timed out\nstatus=deferred<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u90ae\u4ef6\u672c\u8eab\u5e76\u6ca1\u6709\u4e22\u5931\uff0c\u800c\u662f\u4e0d\u65ad\u7559\u5728 Postfix \u961f\u5217\u4e2d\u7b49\u5f85\u91cd\u8bd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6\u5373\u4f7f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MX \u6b63\u786e<\/li>\n\n\n\n<li>DKIM \u6b63\u786e<\/li>\n\n\n\n<li>SPF \u6b63\u786e<\/li>\n\n\n\n<li>TLS \u6b63\u786e<\/li>\n\n\n\n<li>Mailcow \u5de5\u4f5c\u6b63\u5e38<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ecd\u7136\u65e0\u6cd5\u5b8c\u6210\u5916\u90e8\u6295\u9012\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e8c\u3001SMTP2GO \u7684\u4f5c\u7528\u662f\u4ec0\u4e48<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO \u53ef\u4ee5\u7406\u89e3\u6210\u4e00\u4e2a\u4e13\u4e1a\u7684<strong>\u4e0a\u6e38 SMTP \u4e2d\u7ee7\u670d\u52a1\u5668<\/strong>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u539f\u6765\u7684\u90ae\u4ef6\u8def\u5f84\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193 TCP\/25\n\u6536\u4ef6\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u52a0\u5165 SMTP2GO \u540e\u53d8\u6210\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193 TCP\/587\nSMTP2GO\n   \u2193 TCP\/25\n\u6536\u4ef6\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e5f\u5c31\u662f\u8bf4\uff0c\u5bb6\u5ead\u670d\u52a1\u5668\u4e0d\u518d\u76f4\u63a5\u8fde\u63a5\u5168\u7403\u90ae\u4ef6\u670d\u52a1\u5668\u7684 25 \u7aef\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow \u53ea\u9700\u8981\u8fde\u63a5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mail.smtp2go.com:587<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e\u7531 SMTP2GO \u5b8c\u6210\u771f\u6b63\u7684\u4e92\u8054\u7f51\u90ae\u4ef6\u6295\u9012\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e\u5bb6\u5ead\u5bbd\u5e26\u901a\u5e38\u4e0d\u4f1a\u5c01\u9501 TCP 587\uff0c\u56e0\u6b64\u53ef\u4ee5\u7ed5\u8fc7\u51fa\u7ad9 25 \u7aef\u53e3\u9650\u5236\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e09\u3001SMTP2GO \u5e76\u4e0d\u4f1a\u53d6\u4ee3 Mailcow<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u6574\u4e2a\u67b6\u6784\u4e2d\u6700\u91cd\u8981\u7684\u4e00\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 SMTP2GO \u540e\uff0cMailcow \u4ecd\u7136\u662f\u5b8c\u6574\u7684\u90ae\u4ef6\u670d\u52a1\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;mail.example.com&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ecd\u7136\u8d1f\u8d23\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u90ae\u7bb1\u8d26\u6237\u7ba1\u7406<\/li>\n\n\n\n<li>\u90ae\u4ef6\u5b58\u50a8<\/li>\n\n\n\n<li>IMAP<\/li>\n\n\n\n<li>POP3<\/li>\n\n\n\n<li>SMTP Submission<\/li>\n\n\n\n<li>Webmail<\/li>\n\n\n\n<li>Postfix<\/li>\n\n\n\n<li>Dovecot<\/li>\n\n\n\n<li>Rspamd<\/li>\n\n\n\n<li>ClamAV<\/li>\n\n\n\n<li>DKIM<\/li>\n\n\n\n<li>\u672c\u5730\u57df\u90ae\u4ef6\u6295\u9012<\/li>\n\n\n\n<li>\u63a5\u6536\u4e92\u8054\u7f51\u90ae\u4ef6<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u53ea\u8d1f\u8d23\u5176\u4e2d\u4e00\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u628a\u9700\u8981\u53d1\u9001\u5230\u5916\u90e8\u90ae\u4ef6\u57df\u7684\u90ae\u4ef6\u7ee7\u7eed\u6295\u9012\u51fa\u53bb\u3002<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u4e24\u8005\u5173\u7cfb\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow = \u90ae\u4ef6\u670d\u52a1\u5668\u672c\u4f53\nSMTP2GO = \u5916\u53d1 SMTP Relay<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u56db\u3001\u6536\u90ae\u4ef6\u7684\u8def\u5f84\u5b8c\u5168\u4e0d\u53d8<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u90ae\u7bb1\u57df\u540d\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u90ae\u4ef6\u670d\u52a1\u5668\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;mail.your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">DNS \u4e2d\u4ecd\u7136\u53ef\u4ee5\u914d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;your-domain.example&gt;\nMX 10 &lt;mail.your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5916\u90e8\u670d\u52a1\u5668\u53d1\u9001\u90ae\u4ef6\u65f6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Gmail\n   \u2193 \u67e5\u8be2 MX\n&lt;mail.your-domain.example&gt;\n   \u2193 TCP\/25\nMailcow\n   \u2193\nDovecot\n   \u2193\nMailbox<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u5b8c\u5168\u4e0d\u53c2\u4e0e\u8fd9\u4e00\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u52a0\u5165 SMTP Relay \u5e76\u4e0d\u610f\u5473\u7740\u628a\u6574\u4e2a\u90ae\u4ef6\u7cfb\u7edf\u6258\u7ba1\u7ed9\u7b2c\u4e09\u65b9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e94\u3001\u5916\u53d1\u90ae\u4ef6\u65f6\u53d1\u751f\u4e86\u4ec0\u4e48<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe\u4e00\u4e2a\u5ba2\u6237\u7aef\u53d1\u9001\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sender@&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5230\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>recipient@gmail.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b8c\u6574\u8fc7\u7a0b\u53ef\u4ee5\u5206\u6210\u51e0\u6b65\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u5ba2\u6237\u7aef\u628a\u90ae\u4ef6\u4ea4\u7ed9 Mailcow<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982 Thunderbird\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Thunderbird\n   \u2193 SMTPS 465\nMailcow\/Postfix<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Thunderbird\n   \u2193 SMTP Submission 587\nMailcow\/Postfix<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5ba2\u6237\u7aef\u9996\u5148\u4f7f\u7528\u81ea\u5df1\u90ae\u7bb1\u7684\u7528\u6237\u540d\u548c\u5bc6\u7801\u767b\u5f55 Mailcow\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u9636\u6bb5\u548c SMTP2GO \u65e0\u5173\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Postfix \u5c06\u90ae\u4ef6\u653e\u5165\u961f\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix \u63a5\u6536\u90ae\u4ef6\u540e\uff0c\u4f1a\u751f\u6210\u4e00\u4e2a Queue ID\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ABC123DEF456<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6\u90ae\u4ef6\u7531\u672c\u673a Postfix \u7ba1\u7406\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">3. Postfix \u5224\u65ad\u90ae\u4ef6\u5e94\u8be5\u8d70\u54ea\u6761\u8def<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u6536\u4ef6\u4eba\u4e5f\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow\u77e5\u9053\u8fd9\u662f\u672c\u5730\u57df\uff0c\u4e8e\u662f\u76f4\u63a5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Postfix\n   \u2193 LMTP\nDovecot\n   \u2193\n\u672c\u5730\u90ae\u7bb1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u4f1a\u7ecf\u8fc7 SMTP2GO\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u6536\u4ef6\u4eba\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@gmail.com\n@proton.me\n@qq.com\n@outlook.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5219\u5c5e\u4e8e\u5916\u90e8\u57df\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u65f6\u53ef\u4ee5\u901a\u8fc7 Mailcow \u7684 Sender-dependent Transport \u5c06\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7684\u5916\u53d1\u90ae\u4ef6\u6307\u5411\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#091;mail.smtp2go.com]:587<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u516d\u3001\u4e3a\u4ec0\u4e48\u914d\u7f6e\u6210 <code>[mail.smtp2go.com]:587<\/code><\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5178\u578b\u914d\u7f6e\u76ee\u6807\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#091;mail.smtp2go.com]:587<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u4e2d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>587<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u662f SMTP Submission \/ Relay \u5e38\u7528\u7aef\u53e3\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u65b9\u62ec\u53f7\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#091;mail.smtp2go.com]<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5219\u544a\u8bc9 Postfix\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u76f4\u63a5\u8fde\u63a5\u8fd9\u4e2a\u4e3b\u673a\uff0c\u4e0d\u8981\u518d\u5bf9\u5b83\u6267\u884c MX \u67e5\u8be2\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u7ec8\u53ea\u9700\u8981\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DNS \u67e5\u8be2 mail.smtp2go.com\n        \u2193\n\u83b7\u5f97 SMTP2GO IP\n        \u2193\n\u8fde\u63a5 TCP\/587<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e03\u3001Mailcow \u5982\u4f55\u83b7\u5f97 SMTP2GO \u7684\u53d1\u9001\u6743\u9650<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u901a\u5e38\u63d0\u4f9b\u72ec\u7acb\u7684 SMTP \u51ed\u636e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SMTP Server:\nmail.smtp2go.com\n\nPort:\n587\n\nUsername:\n&lt;smtp-user&gt;\n\nPassword:\n&lt;smtp-password&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u7ec4\u7528\u6237\u540d\u548c\u5bc6\u7801\u4e0e Mailcow \u90ae\u7bb1\u5bc6\u7801\u4e0d\u662f\u4e00\u56de\u4e8b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e24\u5957\u8ba4\u8bc1\u5e94\u8be5\u5206\u5f00\u7406\u89e3\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u90ae\u4ef6\u5ba2\u6237\u7aef\n   \u2193\n\u90ae\u7bb1\u7528\u6237\u540d\/\u5bc6\u7801\n   \u2193\nMailcow<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u53ca\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193\nSMTP2GO SMTP Username\/Password\n   \u2193\nSMTP2GO<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u5373\u4f7f\u90ae\u7bb1\u91cc\u6709\u51e0\u5341\u4e2a\u7528\u6237\uff0cMailcow\u4e5f\u53ef\u4ee5\u7edf\u4e00\u901a\u8fc7\u540c\u4e00\u5957 SMTP2GO Relay \u51ed\u636e\u5b8c\u6210\u5916\u53d1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u516b\u3001TLS \u5728\u5176\u4e2d\u626e\u6f14\u4ec0\u4e48\u89d2\u8272<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow \u8fde\u63a5 SMTP2GO \u7684\u5178\u578b\u8fc7\u7a0b\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>EHLO\nSTARTTLS\nAUTH\nMAIL FROM\nRCPT TO\nDATA<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\u8fde\u63a5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mail.smtp2go.com:587<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u8fd4\u56de\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>250-STARTTLS\n250-AUTH<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix\u968f\u540e\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>STARTTLS<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53cc\u65b9\u5efa\u7acb TLS \u52a0\u5bc6\u8fde\u63a5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b63\u5e38\u65e5\u5fd7\u53ef\u80fd\u770b\u5230\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Trusted TLS connection established\nTLSv1.3<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u968f\u540e\u624d\u8fdb\u884c SMTP AUTH\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow \u2194 SMTP2GO<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u6bb5\u4f20\u8f93\u4e0d\u4f1a\u4ee5\u660e\u6587\u7ecf\u8fc7\u4e92\u8054\u7f51\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e5d\u3001\u4e3a\u4ec0\u4e48\u8fd8\u9700\u8981\u7ed9 SMTP2GO \u914d\u7f6e DNS<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u9700\u8981\u786e\u8ba4\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5f53\u524d\u8d26\u6237\u786e\u5b9e\u6709\u6743\u4ee3\u8868 <code>&lt;your-domain.example&gt;<\/code> \u53d1\u4fe1\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u5426\u5219\u4efb\u4f55\u6ce8\u518c\u7528\u6237\u90fd\u53ef\u4ee5\u4f2a\u9020\u5176\u4ed6\u516c\u53f8\u7684\u57df\u540d\u53d1\u9001\u90ae\u4ef6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u901a\u5e38\u9700\u8981\u589e\u52a0\u82e5\u5e72 DNS \u8bb0\u5f55\uff0c\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;return-subdomain&gt;.&lt;your-domain.example&gt;\n    CNAME\nreturn.smtp2go.net<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;selector&gt;._domainkey.&lt;your-domain.example&gt;\n    CNAME\ndkim.smtp2go.net<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u53ca\u53ef\u9009\u7684\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;link-subdomain&gt;.&lt;your-domain.example&gt;\n    CNAME\ntrack.smtp2go.net<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\u8bb0\u5f55\u4e3b\u8981\u89e3\u51b3\u7684\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57df\u540d\u6240\u6709\u6743\u9a8c\u8bc1<\/li>\n\n\n\n<li>DKIM<\/li>\n\n\n\n<li>Return-Path<\/li>\n\n\n\n<li>Bounce handling<\/li>\n\n\n\n<li>\u90ae\u4ef6\u8eab\u4efd\u9a8c\u8bc1<\/li>\n\n\n\n<li>Tracking domain<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u4eec\u5e76\u4e0d\u662f\u90ae\u4ef6\u8def\u7531\u8bb0\u5f55\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u3001DNS \u548c SMTP \u8def\u7531\u5fc5\u987b\u533a\u5206\u5f00<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u975e\u5e38\u5bb9\u6613\u6df7\u6dc6\u7684\u4e00\u70b9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Mailcow \u4e2d\u7684 Transport<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u51b3\u5b9a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u90ae\u4ef6\u53d1\u9001\u5230\u54ea\u91cc<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u5982\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;your-domain.example&gt;\n\u2192 &#091;mail.smtp2go.com]:587<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f<strong>\u8def\u7531\u914d\u7f6e<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h3 class=\"wp-block-heading\">DNS \u4e2d\u7684 SMTP2GO \u8bb0\u5f55<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u51b3\u5b9a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SMTP2GO \u662f\u5426\u83b7\u5f97\u8be5\u57df\u540d\u6388\u6743<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u53ca\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u63a5\u6536\u65b9\u5982\u4f55\u9a8c\u8bc1\u90ae\u4ef6<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f<strong>\u8eab\u4efd\u4e0e\u8ba4\u8bc1\u914d\u7f6e<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow Transport<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u53bb\u54ea\u91cc\u53d1\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u800c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DNS<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u89e3\u51b3\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u6709\u6ca1\u6709\u8d44\u683c\u4ee3\u8868\u8fd9\u4e2a\u57df\u540d\u53d1\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e00\u3001SMTP2GO \u7684 DKIM \u662f\u600e\u4e48\u5de5\u4f5c\u7684<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5047\u8bbe SMTP2GO \u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;selector&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f5c\u4e3a DKIM selector\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u90ae\u4ef6\u4e2d\u53ef\u80fd\u51fa\u73b0\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DKIM-Signature:\nd=&lt;your-domain.example&gt;;\ns=&lt;selector&gt;;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Gmail\u6536\u5230\u90ae\u4ef6\u4ee5\u540e\uff0c\u4f1a\u67e5\u8be2\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;selector&gt;._domainkey.&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u8fd4\u56de\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CNAME \u2192 dkim.smtp2go.net<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e Gmail\u53d6\u5f97 DKIM \u516c\u94a5\uff0c\u9a8c\u8bc1\u90ae\u4ef6\u7b7e\u540d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9a8c\u8bc1\u6210\u529f\u540e\uff0c\u53ef\u4ee5\u8bc1\u660e\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u8fd9\u5c01\u90ae\u4ef6\u662f\u7531\u83b7\u5f97 <code>&lt;your-domain.example&gt;<\/code> \u6388\u6743\u7684\u53d1\u9001\u57fa\u7840\u8bbe\u65bd\u7b7e\u540d\u7684\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e8c\u3001\u4e3a\u4ec0\u4e48 Mailcow \u539f\u6765\u7684 DKIM \u4e0d\u9700\u8981\u5220\u9664<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow\u672c\u8eab\u53ef\u80fd\u5df2\u7ecf\u6709\u7c7b\u4f3c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dkim._domainkey.&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7684\u8bb0\u5f55\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u5219\u53ef\u80fd\u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;selector&gt;._domainkey.&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u4e8e selector \u4e0d\u540c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dkim<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;selector&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5e76\u4e0d\u51b2\u7a81\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u4e00\u4e2a\u57df\u540d\u5b8c\u5168\u53ef\u4ee5\u5b58\u5728\u591a\u4e2a DKIM selector\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u901a\u5e38\u6ca1\u6709\u5fc5\u8981\u4e3a\u4e86 SMTP2GO \u5220\u9664 Mailcow \u539f\u6765\u7684 DKIM\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e09\u3001Return-Path \u7684\u4f5c\u7528<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP\u90ae\u4ef6\u5b9e\u9645\u4e0a\u5b58\u5728\u4e24\u4e2a\u6bd4\u8f83\u5bb9\u6613\u6df7\u6dc6\u7684\u201c\u53d1\u4ef6\u4eba\u201d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7528\u6237\u770b\u5230\u7684\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>From:\nsender@&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP\u5e95\u5c42\u8fd8\u6709\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MAIL FROM<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u540e\u8005\u901a\u5e38\u6700\u7ec8\u4e0e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Return-Path<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f8\u5173\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u4e3b\u8981\u7528\u4e8e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9000\u4fe1<\/li>\n\n\n\n<li>SPF<\/li>\n\n\n\n<li>Bounce<\/li>\n\n\n\n<li>Delivery Status Notification<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u901a\u5e38\u4f1a\u4f7f\u7528\u4e00\u4e2a\u4e13\u95e8\u7684 Return-Path \u5b50\u57df\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u901a\u8fc7\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;return-subdomain&gt;.&lt;your-domain.example&gt;\n\u2192 return.smtp2go.net<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u8ba9\u8fd9\u4e00\u90e8\u5206\u4ecd\u7136\u5904\u4e8e\u81ea\u5df1\u7684\u57df\u540d\u4f53\u7cfb\u4e4b\u4e0b\uff0c\u540c\u65f6\u628a\u5177\u4f53\u5904\u7406\u59d4\u6258\u7ed9 SMTP2GO\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u56db\u3001\u90ae\u4ef6\u53d1\u9001\u6210\u529f\u6709\u4e24\u4e2a\u9636\u6bb5<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix \u65e5\u5fd7\u51fa\u73b0\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>relay=mail.smtp2go.com:587\ndsn=2.0.0\nstatus=sent\n250 OK<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u610f\u5473\u7740\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">SMTP2GO\u5df2\u7ecf\u6210\u529f\u63a5\u6536\u8fd9\u5c01\u90ae\u4ef6\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e Postfix \u4f1a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>removed<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u672c\u5730\u961f\u5217\u5220\u9664\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f\u8fd9\u5e76\u4e0d\u4e00\u5b9a\u7b49\u4ef7\u4e8e\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Gmail \u5df2\u7ecf\u6700\u7ec8\u6536\u4ef6\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u8d23\u4efb\u5df2\u7ecf\u4ece\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f6c\u79fb\u5230\u4e86\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SMTP2GO<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u968f\u540e\u624d\u4f1a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u67e5\u8be2\u76ee\u6807\u57df MX\n      \u2193\n\u8fde\u63a5\u76ee\u6807\u670d\u52a1\u5668 TCP\/25\n      \u2193\n\u5c1d\u8bd5\u6295\u9012<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u6709\u4e24\u4e2a\u4e0d\u540c\u7684\u6210\u529f\u72b6\u6001\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow status=sent\n= Mailcow \u2192 SMTP2GO \u6210\u529f<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u53ca\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SMTP2GO Delivered\n= SMTP2GO \u2192 \u6700\u7ec8\u76ee\u6807\u670d\u52a1\u5668\u6210\u529f<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u6700\u7ec8\u670d\u52a1\u5668\u6682\u65f6\u4e0d\u53ef\u7528\uff0cSMTP2GO\u4f1a\u8d1f\u8d23\u6392\u961f\u548c\u91cd\u8bd5\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e94\u3001SMTP2GO \u8fd8\u51cf\u5c11\u4e86\u672c\u5730\u670d\u52a1\u5668\u7684\u5916\u53d1\u8d1f\u62c5<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u76f4\u63a5\u6295\u9012\u65f6\uff0c\u5982\u679c Gmail\u6682\u65f6\u4e0d\u53ef\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193\nGmail:25\n\u5931\u8d25\n   \u2193\nPostfix Queue\n   \u2193\n\u8fc7\u4e00\u6bb5\u65f6\u95f4\u91cd\u8bd5\n   \u2193\n\u518d\u6b21\u8fde\u63a5<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\u4e8b\u60c5\u5168\u90e8\u7531\u81ea\u5efa\u670d\u52a1\u5668\u627f\u62c5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 SMTP2GO\u540e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193\nSMTP2GO:587\n   \u2193\n250 OK<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow\u53ef\u4ee5\u7acb\u5373\u7ed3\u675f\u4efb\u52a1\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e4b\u540e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SMTP2GO\n   \u2193\nGmail\n\u5931\u8d25\n   \u2193\nSMTP2GO\u81ea\u5df1\u7684\u961f\u5217\n   \u2193\nSMTP2GO\u8d1f\u8d23\u91cd\u8bd5<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u4ee5\u4e0b\u5de5\u4f5c\u4e5f\u88ab\u8f6c\u79fb\u5230\u4e86\u7b2c\u4e09\u65b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5916\u90e8 SMTP \u91cd\u8bd5<\/li>\n\n\n\n<li>\u5927\u89c4\u6a21 MX \u67e5\u8be2<\/li>\n\n\n\n<li>\u76ee\u6807\u670d\u52a1\u5668\u9650\u901f<\/li>\n\n\n\n<li>Bounce \u7ba1\u7406<\/li>\n\n\n\n<li>\u516c\u7f51\u53d1\u9001 IP<\/li>\n\n\n\n<li>IP Reputation<\/li>\n\n\n\n<li>\u5916\u53d1 TCP 25<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u516d\u3001\u670d\u52a1\u5668\u8d1f\u8377\u4e3b\u8981\u4ecd\u7136\u5728\u54ea\u91cc<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 SMTP2GO\u5e76\u4e0d\u4f1a\u8ba9 Mailcow\u53d8\u6210\u4e00\u4e2a\u7b80\u5355\u7684\u8f6c\u53d1\u5668\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Mailcow\u4ecd\u7136\u9700\u8981\u957f\u671f\u8fd0\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Postfix\nDovecot\nRspamd\nClamAV\nSOGo\nMariaDB\nRedis\nNginx\nUnbound<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5176\u4e2d\u5c24\u5176\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ClamAV\nRspamd\n\u6570\u636e\u5e93\nWebmail\n\u90ae\u7bb1\u5b58\u50a8<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f1a\u4ea7\u751f\u6301\u7eed\u7684 CPU\u3001\u5185\u5b58\u548c\u78c1\u76d8\u8d1f\u8f7d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u627f\u62c5\u7684\u662f\u5916\u90e8\u6295\u9012\u9636\u6bb5\u7684\u5de5\u4f5c\uff0c\u800c\u8fd9\u4e9b\u8d44\u6e90\u6d88\u8017\u53d1\u751f\u5728 SMTP2GO\u81ea\u5df1\u7684\u670d\u52a1\u5668\u4e0a\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u53ef\u4ee5\u6982\u62ec\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u672c\u5730 Mailcow\n\u2192 \u90ae\u4ef6\u7cfb\u7edf\u4e3b\u4f53\u8d1f\u8377\n\nSMTP2GO\n\u2192 \u4e92\u8054\u7f51\u5916\u53d1\u6295\u9012\u8d1f\u8377<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e03\u3001\u9690\u79c1\u65b9\u9762\u9700\u8981\u77e5\u9053\u4ec0\u4e48<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP Relay\u5e76\u4e0d\u662f\u7aef\u5230\u7aef\u52a0\u5bc6\u901a\u9053\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u524d\u7ed3\u6784\u662f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193 TLS\nSMTP2GO\n   \u2193 TLS\n\u6700\u7ec8\u90ae\u4ef6\u670d\u52a1\u5668<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">TLS\u53ef\u4ee5\u9632\u6b62\u8fd0\u8425\u5546\u3001\u8def\u7531\u5668\u548c\u7f51\u7edc\u4e2d\u95f4\u8282\u70b9\u76f4\u63a5\u8bfb\u53d6\u90ae\u4ef6\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f SMTP2GO\u672c\u8eab\u662f\u7b2c\u4e00\u6bb5 TLS \u7684\u7ec8\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u4ece\u6280\u672f\u4e0a\u8bb2\uff0c\u5b83\u9700\u8981\u80fd\u591f\u5904\u7406\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53d1\u4ef6\u4eba<\/li>\n\n\n\n<li>\u6536\u4ef6\u4eba<\/li>\n\n\n\n<li>Subject<\/li>\n\n\n\n<li>\u90ae\u4ef6\u6b63\u6587<\/li>\n\n\n\n<li>HTML<\/li>\n\n\n\n<li>\u9644\u4ef6<\/li>\n\n\n\n<li>\u90ae\u4ef6 Header<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6240\u4ee5\u4f7f\u7528\u7b2c\u4e09\u65b9 SMTP Relay\u672c\u8d28\u4e0a\u610f\u5473\u7740\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5c06\u5916\u53d1\u90ae\u4ef6\u5904\u7406\u8fc7\u7a0b\u4e2d\u7684\u4e00\u90e8\u5206\u4fe1\u4efb\u4ea4\u7ed9\u7b2c\u4e09\u65b9\u670d\u52a1\u5546\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u666e\u901a\u4e2a\u4eba\u90ae\u4ef6\u3001\u670d\u52a1\u5668\u901a\u77e5\u3001\u8d26\u53f7\u90ae\u4ef6\u548c\u65e5\u5e38\u901a\u4fe1\uff0c\u8fd9\u662f\u5e38\u89c1\u7684\u90ae\u4ef6\u67b6\u6784\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u90ae\u4ef6\u5185\u5bb9\u5c5e\u4e8e\u5fc5\u987b\u4fdd\u8bc1\u4e2d\u7ee7\u670d\u52a1\u5546\u4e5f\u65e0\u6cd5\u8bfb\u53d6\u7684\u9ad8\u5ea6\u654f\u611f\u4fe1\u606f\uff0c\u5219\u9700\u8981\u53e6\u5916\u4f7f\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>OpenPGP<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u8005\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>S\/MIME<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fdb\u884c\u771f\u6b63\u7684\u7aef\u5230\u7aef\u5185\u5bb9\u52a0\u5bc6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u516b\u3001SMTP2GO \u6545\u969c\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c SMTP2GO\u6682\u65f6\u4e0d\u53ef\u7528\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Mailcow\n   \u2193\nmail.smtp2go.com:587\n   \u00d7<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix\u4e0d\u4f1a\u7acb\u5373\u4e22\u5f03\u90ae\u4ef6\uff0c\u800c\u662f\u5c06\u5176\u7f6e\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>deferred<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7136\u540e\u6309\u7167\u81ea\u5df1\u7684\u961f\u5217\u7b56\u7565\u91cd\u8bd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u800c\u6536\u4fe1\u4ecd\u7136\u53ef\u4ee5\u7ee7\u7eed\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Internet\n   \u2193\n&lt;mail.your-domain.example&gt;:25\n   \u2193\nMailcow<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u5730\u57df\u90ae\u4ef6\u540c\u6837\u6b63\u5e38\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>user1@&lt;your-domain.example&gt;\n        \u2193\nMailcow\n        \u2193\nuser2@&lt;your-domain.example&gt;<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64 SMTP2GO\u6545\u969c\u4e3b\u8981\u5f71\u54cd\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\u5411\u5916\u90e8\u57df\u53d1\u9001\u90ae\u4ef6<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u4f1a\u5bfc\u81f4\u6574\u4e2a Mailcow\u5931\u6548\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u5341\u4e5d\u3001\u8fd9\u5957\u67b6\u6784\u9002\u5408\u4ec0\u4e48\u573a\u666f<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u79cd\u65b9\u5f0f\u7279\u522b\u9002\u5408\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bb6\u5ead\u5bbd\u5e26\u90e8\u7f72 Mailcow<\/li>\n\n\n\n<li>ISP \u5c01\u9501 Outbound TCP\/25<\/li>\n\n\n\n<li>\u52a8\u6001\u6216\u4f4f\u5b85\u516c\u7f51 IP<\/li>\n\n\n\n<li>\u90ae\u4ef6\u91cf\u8f83\u4f4e<\/li>\n\n\n\n<li>\u5e0c\u671b\u7ee7\u7eed\u81ea\u884c\u4fdd\u5b58\u90ae\u7bb1\u6570\u636e<\/li>\n\n\n\n<li>\u5e0c\u671b\u4fdd\u7559\u81ea\u5df1\u7684 IMAP\u3001SMTP\u3001Webmail<\/li>\n\n\n\n<li>\u4e0d\u5e0c\u671b\u628a\u6574\u4e2a\u90ae\u7bb1\u8fc1\u79fb\u5230 Gmail \u6216 Microsoft 365<\/li>\n\n\n\n<li>\u53ea\u60f3\u628a\u56f0\u96be\u7684\u516c\u7f51\u5916\u53d1\u90e8\u5206\u4ea4\u7ed9\u4e13\u4e1a\u670d\u52a1\u5546<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u67b6\u6784\u6700\u7ec8\u53ef\u4ee5\u4fdd\u6301\u4e3a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"> <code>                \u6536\u4fe1\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n\nInternet\n   \u2193 TCP\/25\n&lt;mail.your-domain.example&gt;\n   \u2193\nMailcow\n   \u2193\nMailbox\n\n\n                 \u5916\u53d1\n\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\n\nClient \/ Webmail \/ Application\n   \u2193\nMailcow\n   \u2193 TCP\/587 + TLS + AUTH\nSMTP2GO\n   \u2193 TCP\/25\nDestination MX<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e8c\u5341\u3001\u6838\u5fc3\u7406\u89e3<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">SMTP2GO\u5e76\u4e0d\u662f\u628a\u81ea\u5efa Mailcow\u66ff\u6362\u6389\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b83\u89e3\u51b3\u7684\u662f\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u4e2d\u4e00\u4e2a\u975e\u5e38\u5177\u4f53\u7684\u95ee\u9898\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u65e0\u6cd5\u53ef\u9760\u5730\u4ece\u4f4f\u5b85\u7f51\u7edc\u76f4\u63a5\u5411\u5168\u7403\u90ae\u4ef6\u670d\u52a1\u5668\u53d1\u9001 SMTP \u90ae\u4ef6\u3002<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u6b64\u6574\u4e2a\u65b9\u6848\u53ef\u4ee5\u7528\u4e09\u53e5\u8bdd\u6982\u62ec\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MX\n\u2192 \u544a\u8bc9\u4e92\u8054\u7f51\uff1a\u90ae\u4ef6\u7531 Mailcow \u63a5\u6536\u3002\n\nMailcow Sender-dependent Transport\n\u2192 \u544a\u8bc9 Postfix\uff1a\u5916\u53d1\u90ae\u4ef6\u4ea4\u7ed9 SMTP2GO\u3002\n\nSMTP2GO DNS \u9a8c\u8bc1\u8bb0\u5f55\n\u2192 \u544a\u8bc9\u6536\u4ef6\u670d\u52a1\u5668\uff1aSMTP2GO\u83b7\u5f97\u4e86\u8be5\u57df\u540d\u7684\u53d1\u9001\u6388\u6743\u3002<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u7ec8\u5f62\u6210\u4e00\u79cd\u6bd4\u8f83\u5b9e\u7528\u7684\u6298\u4e2d\uff1a<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u90ae\u7bb1\u3001\u90ae\u4ef6\u6570\u636e\u3001\u6536\u4fe1\u548c\u5185\u90e8\u5904\u7406\u7ee7\u7eed\u81ea\u884c\u638c\u63a7\uff1b\u516c\u7f51 SMTP \u5916\u53d1\u4ea4\u7ed9\u4e13\u4e1a Relay \u670d\u52a1\u5904\u7406\u3002<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u53d7\u5bb6\u5ead\u5bbd\u5e26 TCP\/25 \u9650\u5236\u7684\u81ea\u5efa Mailcow\u73af\u5883\uff0c\u8fd9\u662f\u4e00\u79cd\u7ed3\u6784\u6e05\u6670\u3001\u6539\u52a8\u8f83\u5c0f\u3001\u7ef4\u62a4\u6210\u672c\u8f83\u4f4e\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u6700\u5927\u7684\u5438\u5f15\u529b\uff0c\u662f\u53ef\u4ee5\u81ea\u884c\u638c\u63e1\u90ae\u7bb1\u8d26\u6237\u3001\u90ae\u4ef6\u5b58\u50a8\u3001\u57df\u540d\u3001\u53cd\u5783\u573e\u7b56\u7565\u548c Webmail \u7b49\u6838\u5fc3\u80fd\u529b\u3002\u4f46\u771f\u6b63\u90e8\u7f72\u5230\u5bb6\u5ead\u5bbd\u5e26\u73af\u5883\u540e\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e2a\u975e\u5e38\u73b0\u5b9e\u7684\u95ee\u9898\uff1a \u90ae\u4ef6\u53ef\u4ee5\u6b63\u5e38\u63a5\u6536\uff0c\u5374\u65e0\u6cd5\u5411 Gmail\u3001Proton Mail\u3001QQ \u90ae\u7bb1\u7b49\u5916\u90e8\u90ae\u4ef6\u670d\u52a1\u5668\u53d1\u9001\u3002 \u95ee\u9898\u901a\u5e38\u5e76\u4e0d\u51fa\u5728 Mailcow\u3001Postfix \u6216 DNS\uff0c\u800c\u662f\u4e92\u8054\u7f51\u63a5\u5165\u5546\u9650\u5236\u4e86\u51fa\u7ad9 TCP 25 \u7aef\u53e3\u3002 SMTP2GO \u8fd9\u7c7b SMTP Relay \u670d\u52a1\uff0c\u53ef\u4ee5\u5728\u4e0d\u653e\u5f03\u81ea\u5efa Mailcow \u7684\u60c5\u51b5\u4e0b\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002 \u4e00\u3001\u4e3a\u4ec0\u4e48\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u4f1a\u9047\u5230 TCP 25 \u95ee\u9898 \u4f20\u7edf\u7535\u5b50\u90ae\u4ef6\u670d\u52a1\u5668\u4e4b\u95f4\u4e3b\u8981\u901a\u8fc7 SMTP TCP 25 \u7aef\u53e3\u901a\u4fe1\u3002 \u4f8b\u5982\uff1a \u5f53\u4e00\u5c01\u90ae\u4ef6\u9700\u8981\u53d1\u9001\u5230\uff1a Postfix \u4f1a\u67e5\u8be2 gmail.com \u7684 MX \u8bb0\u5f55\uff0c\u7136\u540e\u76f4\u63a5\u8fde\u63a5 Google \u7684\u90ae\u4ef6\u670d\u52a1\u5668\uff1a \u5728\u670d\u52a1\u5668\u673a\u623f\u3001VPS \u7b49\u73af\u5883\u4e2d\uff0c\u8fd9\u901a\u5e38\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u3002 \u4f46\u662f\u5f88\u591a\u5bb6\u5ead\u5bbd\u5e26\u4e3a\u4e86\u51cf\u5c11\u5783\u573e\u90ae\u4ef6\u3001\u611f\u67d3\u6728\u9a6c\u7684\u8bbe\u5907\u53d1\u9001 Spam \u7b49\u95ee\u9898\uff0c\u4f1a\u9650\u5236\uff1a \u4e8e\u662f Postfix \u65e5\u5fd7\u53ef\u80fd\u51fa\u73b0\uff1a \u90ae\u4ef6\u672c\u8eab\u5e76\u6ca1\u6709\u4e22\u5931\uff0c\u800c\u662f\u4e0d\u65ad\u7559\u5728 Postfix &hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6271","post","type-post","status-publish","format-standard","hentry","category-vbj2h46q97fzcys"],"_links":{"self":[{"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/posts\/6271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/comments?post=6271"}],"version-history":[{"count":1,"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/posts\/6271\/revisions"}],"predecessor-version":[{"id":6272,"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/posts\/6271\/revisions\/6272"}],"wp:attachment":[{"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/media?parent=6271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/categories?post=6271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.eternalsphere.net\/index.php\/wp-json\/wp\/v2\/tags?post=6271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}