{"id":25139,"date":"2025-09-15T08:57:00","date_gmt":"2025-09-15T00:57:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=25139"},"modified":"2025-08-14T19:03:01","modified_gmt":"2025-08-14T11:03:01","slug":"can-us-vps-run-mail-server-postfix-dovecot-setup-guide","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/vps\/can-us-vps-run-mail-server-postfix-dovecot-setup-guide\/","title":{"rendered":"\u7f8e\u56fdVPS\u80fd\u505a\u90ae\u4ef6\u670d\u52a1\u5668\u5417\uff1f\u5b9e\u6218\u90e8\u7f72Postfix+Dovecot\u7684\u5b8c\u6574\u6307\u5357"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9009\u62e9\u7f8e\u56fdVPS\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668<\/h2>\n\n\n\n<p>\u5f53\u4f60\u5728\u505a\u72ec\u7acb\u7ad9\u8425\u9500\uff0c\u7b2c\u4e09\u65b9\u90ae\u4ef6\u670d\u52a1\u52a8\u8f84\u6309\u53d1\u9001\u91cf\u8ba1\u8d39\uff1b\u800c\u6211\u4eec\u79df\u4e0b\u4e00\u53f0<a href=\"https:\/\/cn.hostease.com\/vps.html\" title=\"\">\u7f8e\u56fdVPS\u4e91\u4e3b\u673a<\/a>\uff0c\u5728\u5e26\u5bbd\u4e0eIP\u8d44\u6e90\u4e0a\u83b7\u5f97\u66f4\u5927\u81ea\u7531\u5ea6\uff0c\u5c24\u5176\u9002\u5408\u9700\u8981<strong>\u7cbe\u51c6\u63a7\u5236\u53d1\u4fe1\u8d28\u91cf\u4e0e\u6570\u636e\u5b89\u5168<\/strong>\u7684\u5916\u8d38\u5356\u5bb6\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u72ec\u7acb\u516c\u7f51IP<\/strong>\uff1a\u907f\u514d\u4e0e\u4ed6\u4eba\u5171\u7528\u5bfc\u81f4\u7684IP\u4fe1\u8a89\u62d6\u7d2f\u3002<\/li>\n\n\n\n<li><strong>\u672c\u5730\u6cd5\u89c4\u53cb\u597d<\/strong>\uff1a\u7f8e\u56fd\u5bf9\u5546\u7528\u90ae\u4ef6\u53d1\u9001\u7684\u76d1\u7ba1\u76f8\u5bf9\u7075\u6d3b\uff0c\u53ea\u8981\u9075\u5b88CAN-SPAM\u5373\u53ef\u3002<\/li>\n\n\n\n<li><strong>\u4e0e\u4e3b\u8981\u6536\u4ef6\u7aef\u8ddd\u79bb\u8fd1<\/strong>\uff1a\u9762\u5411\u5317\u7f8e\u5ba2\u6237\u65f6\uff0c\u4f20\u8f93\u5ef6\u8fdf\u66f4\u4f4e\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u90e8\u7f72\u524d\u7684\u5fc5\u5907\u6761\u4ef6<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u8d44\u6e90<\/th><th>\u6700\u4f4e\u5efa\u8bae<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>VPS\u914d\u7f6e<\/td><td>1vCPU\/1GB RAM\/20GB SSD<\/td><td>\u5c0f\u89c4\u6a21\u53d1\u4fe1\u5373\u53ef\u8fd0\u884cPostfix+Dovecot<\/td><\/tr><tr><td>\u64cd\u4f5c\u7cfb\u7edf<\/td><td>Ubuntu 22.04 LTS<\/td><td>\u793e\u533a\u6587\u6863\u4e30\u5bcc\uff0c\u8f6f\u4ef6\u5305\u66f4\u65b0\u5feb<\/td><\/tr><tr><td>\u57df\u540d<\/td><td>\u5df2\u5b8c\u6210\u5b9e\u540d &amp; \u53ef\u6539DNS<\/td><td>\u7528\u4e8e\u914d\u7f6eMX\u3001SPF\u3001DKIM\u7b49\u8bb0\u5f55<\/td><\/tr><tr><td>\u72ec\u7acbIP<\/td><td>1\u4e2a<\/td><td>\u4fdd\u8bc1IP\u4fe1\u8a89\u53ef\u63a7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u53cb\u60c5\u63d0\u793a\uff1a\u5982\u679c\u4f60\u8ba1\u5212\u4e00\u6b21\u6027\u53d1\u9001\u5927\u91cf\u8425\u9500\u90ae\u4ef6\uff0c\u5efa\u8bae\u5347\u7ea7\u5230<a href=\"https:\/\/cn.hostease.com\/zhanqun.html\" title=\"\">Hostease\u7ad9\u7fa4\u670d\u52a1\u5668<\/a>\u6216GPU\u670d\u52a1\u5668\uff0c\u4ee5\u83b7\u5f97\u66f4\u9ad8\u5e76\u53d1\u4e0eIP\u6c60\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b65\u9aa4\u4e00\uff1a\u7cfb\u7edf\u4e0eDNS\u51c6\u5907<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u66f4\u65b0\u7cfb\u7edf<\/strong>\uff1a<code>sudo apt update &amp;&amp; sudo apt upgrade -y<\/code><\/li>\n\n\n\n<li><strong>\u8bbe\u7f6e\u4e3b\u673a\u540d<\/strong>\uff1a<code>sudo hostnamectl set-hostname mail.yourdomain.com<\/code><\/li>\n\n\n\n<li><strong>DNS\u89e3\u6790<\/strong>\n<ul class=\"wp-block-list\">\n<li>A\u8bb0\u5f55\uff1a<code>mail.yourdomain.com \u2192 VPS_IP<\/code><\/li>\n\n\n\n<li>MX\u8bb0\u5f55\uff1a<code>yourdomain.com \u2192 mail.yourdomain.com (\u4f18\u5148\u7ea710)<\/code><\/li>\n\n\n\n<li>SPF\u8bb0\u5f55\uff1a<code>v=spf1 ip4:VPS_IP -all<\/code><br>\u8fd9\u4e9b\u7b80\u5355\u7684TXT\u8bb0\u5f55\u76f4\u63a5\u51b3\u5b9a\u6536\u4ef6\u7aef\u5bf9\u4f60\u90ae\u4ef6\u7684\u7b2c\u4e00\u5370\u8c61\uff0c\u5343\u4e07\u522b\u5ffd\u7565\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b65\u9aa4\u4e8c\uff1a\u5b89\u88c5Postfix+Dovecot<\/h2>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">sudo apt install postfix postfix-pcre dovecot-imapd dovecot-pop3d dovecot-lmtpd dovecot-mysql -y\n<\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Postfix<\/strong>\u8d1f\u8d23SMTP\u6536\u53d1<\/li>\n\n\n\n<li><strong>Dovecot<\/strong>\u8d1f\u8d23IMAP\/POP3\u6295\u9012\u4e0e\u8eab\u4efd\u9a8c\u8bc1<br>\u5b89\u88c5\u5411\u5bfc\u4e2d\uff0c\u9009\u300cInternet Site\u300d\uff0c\u8f93\u5165\u90ae\u4ef6\u57df\u540d\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b65\u9aa4\u4e09\uff1a\u542f\u7528\u52a0\u5bc6\u4e0e\u8eab\u4efd\u9a8c\u8bc1<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Let\u2019sEncrypt SSL<\/strong> <code>sudo apt install certbot sudo certbot certonly --standalone -d mail.yourdomain.com<\/code><\/li>\n\n\n\n<li><strong>\u5728Postfix\u542f\u7528TLS<\/strong> <code>smtpd_tls_cert_file=\/etc\/letsencrypt\/live\/mail.yourdomain.com\/fullchain.pem smtpd_tls_key_file=\/etc\/letsencrypt\/live\/mail.yourdomain.com\/privkey.pem smtpd_tls_security_level=may<\/code><\/li>\n\n\n\n<li><strong>Dovecot SSL<\/strong> <code>ssl = required ssl_cert = &lt;\/etc\/letsencrypt\/live\/mail.yourdomain.com\/fullchain.pem ssl_key = &lt;\/etc\/letsencrypt\/live\/mail.yourdomain.com\/privkey.pem<\/code><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b65\u9aa4\u56db\uff1a\u914d\u7f6eSPF\u3001DKIM\u3001DMARC<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684<\/th><th>\u8bb0\u5f55\u7c7b\u578b<\/th><th>\u5173\u952e\u5b57\u6bb5\u793a\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u53d1\u4ef6\u670d\u52a1\u5668\u6388\u6743<\/td><td>SPF<\/td><td><code>v=spf1 ip4:VPS_IP -all<\/code><\/td><\/tr><tr><td>\u90ae\u4ef6\u5934\u7b7e\u540d<\/td><td>DKIM<\/td><td><code>v=DKIM1; k=rsa; p=PUBLIC_KEY<\/code><\/td><\/tr><tr><td>\u62e6\u622a\u4eff\u5192<\/td><td>DMARC<\/td><td><code>v=DMARC1; p=quarantine; rua=mailto:postmaster@yourdomain.com<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DKIM\u751f\u6210<\/strong>\uff1a<code>sudo apt install opendkim opendkim-tools<\/code>\uff0c\u7136\u540e<code>opendkim-genkey -d yourdomain.com -s default<\/code><\/li>\n\n\n\n<li><strong>DMARC\u7b56\u7565<\/strong>\u81f3\u5c11\u8bbe\u4e3a<code>p=quarantine<\/code>\uff0c\u63d0\u9ad8\u6743\u5a01\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b65\u9aa4\u4e94\uff1a\u53cd\u5783\u573e\u4e0e\u9650\u901f\u7b56\u7565<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Postscreen<\/strong>\uff1a\u963b\u6321\u50f5\u5c38\u7f51\u7edc\u8fde\u63a5\uff0c\u51cf\u5c11CPU\u6d6a\u8d39\u3002<\/li>\n\n\n\n<li><strong>RBL\u9ed1\u540d\u5355<\/strong>\uff1a\u96c6\u6210Spamhaus\u3001Barracuda\u7b49\uff0c\u63d0\u9ad8\u5b9e\u65f6\u62e6\u622a\u7387\u3002<\/li>\n\n\n\n<li><strong>Greylisting<\/strong>\uff1a\u5bf9\u9996\u6b21\u672a\u77e5IP\u7684\u90ae\u4ef6\u77ed\u6682\u62d2\u6536\uff0c\u8fc7\u6ee4\u5927\u90e8\u5206\u673a\u5668\u4eba\u3002<\/li>\n\n\n\n<li><strong>\u901f\u7387\u9650\u5236<\/strong>\uff1aPostfix\u7684<code>anvil_rate_time_unit<\/code>\u914d\u5408<code>default_destination_rate_delay<\/code>\u4fdd\u62a4IP\u4fe1\u8a89\u3002<br>\u8bb0\u4f4f\uff1a\u4e0e\u5176\u4e8b\u540e\u7533\u8bc9\uff0c\u4e0d\u5982\u4e8b\u524d\u63a7\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6b65\u9aa4\u516d\uff1a\u65e5\u5e38\u76d1\u63a7\u4e0e\u7ef4\u62a4<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u65e5\u5fd7\u5ba1\u8ba1<\/strong>\uff1a<code>\/var\/log\/mail.log<\/code>\u6355\u6349\u9000\u4fe1\u4e0e\u8ba4\u8bc1\u5931\u8d25\uff1bLogwatch\u6bcf\u65e5\u6458\u8981\u3002<\/li>\n\n\n\n<li><strong>IP\u4fe1\u8a89\u8ddf\u8e2a<\/strong>\uff1a\u5229\u7528Senderscore\u3001Talos\u68c0\u67e5\u5206\u6570\uff0c\u5c0f\u4e8e70\u9700\u7acb\u523b\u81ea\u67e5\u3002<\/li>\n\n\n\n<li><strong>\u5347\u7ea7\u9891\u7387<\/strong>\uff1a\u5185\u6838\u4e0e\u8f6f\u4ef6\u5305\u6708\u5ea6\u66f4\u65b0\uff0cTLS\u8bc1\u4e66\u81ea\u52a8\u7eed\u671f\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u95ee\u9898FAQ<\/h2>\n\n\n\n<p><strong>Q: \u6211\u7684\u90ae\u4ef6\u603b\u662f\u8fdbGmail\u5e7f\u544a\u6807\u7b7e\u751a\u81f3\u88ab\u62d2\u6536\uff0c\u600e\u4e48\u529e\uff1f<\/strong><br>A: \u68c0\u67e5\u662f\u5426\u914d\u7f6e\u6b63\u786eSPF\u3001DKIM\u3001DMARC\uff1b\u5176\u6b21\u63a7\u5236\u5355IP\u65e5\u53d1\u9001\u91cf&lt;2,000\u5c01\uff0c\u5e76\u786e\u4fdd\u90ae\u4ef6\u5185\u5bb9\u65e0\u5927\u9644\u4ef6\u6216\u7591\u4f3c\u5783\u573e\u8bcd\u3002<\/p>\n\n\n\n<p><strong>Q: 25\u7aef\u53e3\u88ab\u5c01\u8fd8\u80fd\u53d1\u4fe1\u5417\uff1f<\/strong><br>A: \u53ef\u4ee5\u3002\u5728Postfix\u4e2d\u914d\u7f6e587\/465\u7aef\u53e3\u8fdb\u884cSMTP\u5ba2\u6237\u7aef\u53d1\u4fe1\u3002<\/p>\n\n\n\n<p><strong>Q: DKIM\u5fc5\u987b\u8981\u505a\u5417\uff1f<\/strong><br>A: \u7edd\u5bf9\u8981\u505a\u3002\u6ca1\u6709DKIM\uff0cGmail\/Outlook\u4f1a\u5c06\u4f60\u89c6\u4e3a\u4f4e\u4fe1\u8a89\u53d1\u9001\u8005\uff0c\u51e0\u4e4e\u5fc5\u8fdbSpam\u3002<\/p>\n\n\n\n<p><strong>Q: VPS\u6027\u80fd\u4f4e\uff0c\u4f1a\u5f71\u54cd\u6536\u4fe1\u5417\uff1f<\/strong><br>A: \u6536\u4fe1\u4e3b\u8981\u4f9d\u8d56\u78c1\u76d8I\/O\u4e0e\u5185\u5b58\u3002\u82e5\u5e76\u53d1\u5728\u7ebf\u8f83\u9ad8\uff08&gt;100 IMAP\u8fde\u63a5\uff09\uff0c\u63a8\u8350\u5347\u7ea7\u52302GB RAM\u6216\u4f7f\u7528NVMe\u65b9\u6848\u3002<\/p>\n\n\n\n<p><strong>Q: \u4e3a\u4ec0\u4e48DMARC\u62a5\u544a\u90ae\u7bb1\u6536\u4e0d\u5230\u6570\u636e\uff1f<\/strong><br>A: \u786e\u8ba4TXT\u8bb0\u5f55<code>rua<\/code>\u6b63\u786e\u5e76\u5728\u6536\u4ef6\u90ae\u7bb1\u8bbe\u7f6e\u5141\u8bb8\u5916\u90e8\u62a5\u544a\uff1b\u4e00\u4e9b\u8fd0\u8425\u5546\u53ef\u80fd\u5ef6\u8fdf48\u5c0f\u65f6\u624d\u9996\u6b21\u53d1\u9001\u62a5\u544a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bba\u4e0e\u4e0b\u4e00\u6b65\u884c\u52a8<\/h2>\n\n\n\n<p>\u901a\u8fc7\u4ee5\u4e0a\u516d\u6b65\uff0c\u4f60\u5df2\u7ecf\u62e5\u6709\u4e00\u5957<strong>\u81ea\u4e3b\u53ef\u63a7<\/strong>\u7684\u7f8e\u56fdVPS\u90ae\u4ef6\u670d\u52a1\u5668\u3002\u867d\u7136\u90e8\u7f72\u95e8\u69db\u9ad8\u4e8e\u666e\u901aCMS\uff0c\u4f46\u6362\u6765\u7684IP\u4fe1\u8a89\u4e0e\u6570\u636e\u638c\u63a7\u6743\uff0c\u5bf9\u4e8e\u8de8\u5883\u7535\u5546\u90ae\u4ef6\u8425\u9500\u5c24\u4e3a\u5173\u952e\u3002<br>\u6211\u4eec\u5728Hostease\u63d0\u4f9b\u7f8e\u56fd\u3001\u9999\u6e2f\u3001\u65b0\u52a0\u5761\u3001\u97e9\u56fd\u3001\u65e5\u672c\u7b49\u591a\u5730\u533aVPS\u4e0e<a href=\"https:\/\/cn.hostease.com\/gpu-servers.html\" 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