{"id":31497,"date":"2026-06-26T10:00:00","date_gmt":"2026-06-26T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/uncategorized\/vps-mail-server-postfix-dovecot-spf-dkim\/"},"modified":"2026-06-26T10:00:00","modified_gmt":"2026-06-26T02:00:00","slug":"vps-mail-server-postfix-dovecot-spf-dkim","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/tutorials\/vps-mail-server-postfix-dovecot-spf-dkim\/","title":{"rendered":"VPS\u90ae\u4ef6\u670d\u52a1\u5668\u642d\u5efa\u6559\u7a0b\uff1aPostfix + Dovecot + SPF\/DKIM \u5b8c\u6574\u914d\u7f6e"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"VPS\u90ae\u4ef6\u670d\u52a1\u5668\u67b6\u6784\u793a\u610f\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/vps-mail-server-postfix-dovecot-spf-dkim-cover.webp\" \/><\/p>\n<p>\u5f88\u591a\u5916\u8d38\u7ad9\u957f\u548c\u4e2d\u5c0f\u4f01\u4e1a\u5728\u4f7f\u7528\u5171\u4eab\u4e3b\u673a\u53d1\u9001\u90ae\u4ef6\u65f6\uff0c\u7ecf\u5e38\u4f1a\u9047\u5230\u90ae\u4ef6\u88ab\u9000\u56de\u3001\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u3001\u6216\u8005\u53d1\u9001\u9891\u7387\u88ab\u9650\u5236\u7684\u95ee\u9898\u3002\u5982\u679c\u4f60\u9700\u8981\u4e00\u4e2a\u5b8c\u5168\u53ef\u63a7\u7684\u90ae\u4ef6\u53d1\u9001\u73af\u5883\uff0c\u5728 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u4e0a\u642d\u5efa\u81ea\u5df1\u7684\u90ae\u4ef6\u670d\u52a1\u5668\u662f\u4e00\u4e2a\u503c\u5f97\u8003\u8651\u7684\u65b9\u6848\u3002\u672c\u6587\u5c06\u624b\u628a\u624b\u6559\u4f60\u5982\u4f55\u4ece\u96f6\u5f00\u59cb\u914d\u7f6e Postfix + Dovecot\uff0c\u5e76\u5b8c\u6210 SPF \u548c DKIM \u8ba4\u8bc1\uff0c\u8ba9\u4f60\u7684\u90ae\u4ef6\u80fd\u591f\u7a33\u5b9a\u9001\u8fbe\u6536\u4ef6\u7bb1\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u9009\u62e9\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668<\/h2>\n<p><img decoding=\"async\" alt=\"\u90ae\u4ef6\u4f20\u8f93\u6d41\u7a0b\u793a\u610f\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/vps-mail-server-postfix-dovecot-spf-dkim-flow.webp\" \/><\/p>\n<p>\u5728\u51b3\u5b9a\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u6765\u5206\u6790\u4e00\u4e0b\u5b83\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f\u3002\u5171\u4eab\u4e3b\u673a\u901a\u5e38\u4f1a\u5bf9\u90ae\u4ef6\u53d1\u9001\u8bbe\u7f6e\u4e25\u683c\u7684\u9650\u5236\u2014\u2014\u6bcf\u5c0f\u65f6\u53d1\u9001\u91cf\u4e0a\u9650\u3001\u6bcf\u65e5\u914d\u989d\u3001\u751a\u81f3\u7981\u6b62\u6279\u91cf\u53d1\u9001\u3002\u5bf9\u4e8e\u65e5\u5747\u90ae\u4ef6\u91cf\u8d85\u8fc7 100 \u5c01\u7684\u5916\u8d38\u4f01\u4e1a\u6765\u8bf4\uff0c\u8fd9\u4e9b\u9650\u5236\u4f1a\u76f4\u63a5\u5f71\u54cd\u4e1a\u52a1\u6c9f\u901a\u6548\u7387\u3002\u5982\u679c\u4f60\u8fd8\u6ca1\u6709\u9009\u5b9a\u5408\u9002\u7684\u670d\u52a1\u5668\uff0c\u53ef\u4ee5\u53c2\u8003\u6211\u4eec\u7684<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/2026-us-cloud-server-selection-index\/\">\u7f8e\u56fd\u4e91\u670d\u52a1\u5668\u9009\u8d2d\u6307\u5357<\/a>\u6765\u4e86\u89e3\u4e0d\u540c\u65b9\u6848\u7684\u5dee\u5f02\u3002<\/p>\n<p>\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u7684\u6838\u5fc3\u4f18\u52bf\u5728\u4e8e\uff1a<\/p>\n<ul>\n<li><strong>\u5b8c\u5168\u638c\u63a7\u53d1\u9001\u7b56\u7565<\/strong>\uff1a\u4e0d\u53d7\u7b2c\u4e09\u65b9\u5e73\u53f0\u7684\u53d1\u9001\u9891\u7387\u548c\u914d\u989d\u9650\u5236\uff0c\u53ef\u4ee5\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u7075\u6d3b\u8c03\u6574<\/li>\n<li><strong>\u6570\u636e\u9690\u79c1\u53ef\u63a7<\/strong>\uff1a\u90ae\u4ef6\u6570\u636e\u5b58\u50a8\u5728\u81ea\u5df1\u7684 VPS \u4e0a\uff0c\u4e0d\u7528\u62c5\u5fc3\u7b2c\u4e09\u65b9\u5e73\u53f0\u7684\u6570\u636e\u5408\u89c4\u95ee\u9898<\/li>\n<li><strong>\u6210\u672c\u53ef\u63a7<\/strong>\uff1a\u4e00\u53f0\u5165\u95e8\u7ea7 VPS \u7684\u6708\u8d39\u901a\u5e38\u5728 5-10 \u7f8e\u5143\uff08\u622a\u81f3 2026 \u5e74 6 \u6708\uff0c\u4ee5\u5b98\u7f51\u5b9e\u65f6\u4ef7\u683c\u4e3a\u51c6\uff09\uff0c\u8fdc\u4f4e\u4e8e\u4f01\u4e1a\u90ae\u7bb1\u670d\u52a1\u7684\u4ef7\u683c<\/li>\n<\/ul>\n<p>\u81ea\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u9700\u8981\u5177\u5907\u57fa\u672c\u7684 Linux \u547d\u4ee4\u884c\u64cd\u4f5c\u80fd\u529b\uff0c\u5e76\u4e14\u613f\u610f\u82b1\u65f6\u95f4\u5b66\u4e60 DNS\uff08\u57df\u540d\u7cfb\u7edf\uff09\u914d\u7f6e\u548c\u90ae\u4ef6\u8ba4\u8bc1\u673a\u5236\u3002\u5efa\u8bae\u5148\u5728\u6d4b\u8bd5\u73af\u5883\u4e2d\u719f\u6089\u6574\u4e2a\u6d41\u7a0b\uff0c\u786e\u8ba4\u65e0\u8bef\u540e\u518d\u5207\u6362\u5230\u6b63\u5f0f\u57df\u540d\u3002\u5bf9\u4e8e\u4e0d\u540c\u670d\u52a1\u5668\u65b9\u6848\u7684\u9009\u62e9\uff0c\u53ef\u4ee5\u53c2\u8003<a href=\"https:\/\/cn.hostease.com\/blog\/server\/2026-foreign-cloud-server-comprehensive-comparison\/\">\u5916\u56fd\u4e91\u670d\u52a1\u5668\u5bf9\u6bd4<\/a>\u6765\u627e\u5230\u6700\u9002\u5408\u4f60\u7684\u65b9\u6848\u3002<\/p>\n<h3>\u51c6\u5907\u5de5\u4f5c<\/h3>\n<p>\u5728\u5f00\u59cb\u5b89\u88c5\u4e4b\u524d\uff0c\u9700\u8981\u786e\u8ba4\u4ee5\u4e0b\u6761\u4ef6\uff1a<\/p>\n<ul>\n<li><strong>\u72ec\u7acb IP \u5730\u5740<\/strong>\uff1a\u786e\u4fdd VPS \u5206\u914d\u4e86\u5e72\u51c0\u7684\u72ec\u7acb IP\uff0c\u6ca1\u6709\u88ab\u5217\u5165\u9ed1\u540d\u5355<\/li>\n<li><strong>\u5185\u5b58 1GB \u4ee5\u4e0a<\/strong>\uff1a\u52a0\u4e0a\u53cd\u5783\u573e\u90ae\u4ef6\u7ec4\u4ef6\u540e\uff0c\u5efa\u8bae\u81f3\u5c11 1GB \u5185\u5b58<\/li>\n<li><strong>\u5f00\u653e\u7aef\u53e3<\/strong>\uff1a\u786e\u8ba4\u9632\u706b\u5899\u5141\u8bb8 25\uff08SMTP\uff09\u3001587\uff08\u63d0\u4ea4\uff09\u3001993\uff08IMAPS\uff09\u7aef\u53e3\u7684\u6d41\u91cf<\/li>\n<li><strong>DNS \u9884\u914d\u7f6e<\/strong>\uff1a\u6dfb\u52a0 A \u8bb0\u5f55\uff08<code>mail.yourdomain.com<\/code> \u2192 VPS IP\uff09\u3001MX \u8bb0\u5f55\uff08\u6307\u5411 <code>mail.yourdomain.com<\/code>\uff09\u548c PTR \u53cd\u5411\u89e3\u6790\u8bb0\u5f55<\/li>\n<\/ul>\n<p>PTR \u8bb0\u5f55\u7ecf\u5e38\u88ab\u5ffd\u7565\uff0c\u4f46\u5b83\u662f\u90ae\u4ef6\u9001\u8fbe\u7387\u7684\u91cd\u8981\u4fdd\u969c\u3002Gmail\u3001Outlook \u7b49\u4e3b\u6d41\u90ae\u4ef6\u670d\u52a1\u5546\u90fd\u4f1a\u68c0\u67e5\u53d1\u4ef6 IP \u7684\u53cd\u5411\u89e3\u6790\u8bb0\u5f55\uff0c\u7f3a\u5c11 PTR \u8bb0\u5f55\u7684\u90ae\u4ef6\u5f88\u53ef\u80fd\u76f4\u63a5\u88ab\u62d2\u6536\u3002\u5173\u4e8e VPS \u7684\u5177\u4f53\u90e8\u7f72\u6d41\u7a0b\uff0c\u53ef\u4ee5\u53c2\u8003<a href=\"https:\/\/cn.hostease.com\/blog\/server\/us-vps-deployment-tutorial-2026\/\">\u7f8e\u56fdVPS\u670d\u52a1\u5668\u90e8\u7f72\u6559\u7a0b<\/a>\u3002<\/p>\n<h2>\u5b89\u88c5\u548c\u914d\u7f6e Postfix<\/h2>\n<p>Postfix \u662f\u76ee\u524d\u6700\u6d41\u884c\u7684\u90ae\u4ef6\u4f20\u8f93\u4ee3\u7406\uff08MTA\uff09\uff0c\u8d1f\u8d23\u5904\u7406\u90ae\u4ef6\u7684\u53d1\u9001\u548c\u63a5\u6536\u3002\u5b83\u7684\u914d\u7f6e\u76f8\u5bf9\u7b80\u6d01\uff0c\u5b89\u5168\u6027\u4e5f\u6bd4\u8001\u724c\u7684 Sendmail \u66f4\u597d\u3002<\/p>\n<p>\u5728 Ubuntu\/Debian \u7cfb\u7edf\u4e0a\uff0c\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88c5 Postfix\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo apt update\nsudo apt install postfix\n<\/code><\/pre>\n<p>\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u4f1a\u5f39\u51fa\u914d\u7f6e\u5411\u5bfc\uff0c\u9009\u62e9 <strong>Internet Site<\/strong> \u7c7b\u578b\uff0c\u7cfb\u7edf\u90ae\u4ef6\u540d\u79f0\u586b\u5199\u4f60\u7684\u57df\u540d\uff08\u5982 <code>yourdomain.com<\/code>\uff09\u3002<\/p>\n<h3>\u6838\u5fc3\u914d\u7f6e\u6587\u4ef6<\/h3>\n<p>Postfix \u7684\u4e3b\u914d\u7f6e\u6587\u4ef6\u4f4d\u4e8e <code>\/etc\/postfix\/main.cf<\/code>\u3002\u4ee5\u4e0b\u662f\u9700\u8981\u4fee\u6539\u7684\u5173\u952e\u53c2\u6570\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u57fa\u672c\u8bbe\u7f6e\nmyhostname = mail.yourdomain.com\nmydomain = yourdomain.com\nmyorigin = $mydomain\nmydestination = $myhostname, $mydomain, localhost.localdomain, localhost\nmynetworks = 127.0.0.0\/8 [::ffff:127.0.0.0]\/104 [::1]\/128\n\n# TLS \u52a0\u5bc6\u914d\u7f6e\uff08SSL\u5b89\u5168\u4f20\u8f93\u534f\u8bae\uff09\nsmtpd_tls_cert_file = \/etc\/ssl\/certs\/mail.yourdomain.com.crt\nsmtpd_tls_key_file = \/etc\/ssl\/private\/mail.yourdomain.com.key\nsmtpd_use_tls = yes\nsmtpd_tls_auth_only = yes\n\n# SASL \u8ba4\u8bc1\nsmtpd_sasl_type = dovecot\nsmtpd_sasl_path = private\/auth\nsmtpd_sasl_auth_enable = yes\n\n# \u9650\u5236\u8bbe\u7f6e\uff08\u9632\u6b62\u88ab\u6ee5\u7528\uff09\nmessage_size_limit = 52428800\nmailbox_size_limit = 0\n<\/code><\/pre>\n<p>\u914d\u7f6e\u5b8c\u6210\u540e\uff0c\u91cd\u542f Postfix \u4f7f\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo systemctl restart postfix\nsudo systemctl enable postfix\n<\/code><\/pre>\n<p>\u8fd9\u91cc\u9700\u8981\u7279\u522b\u6ce8\u610f TLS \u914d\u7f6e\u3002\u5982\u679c\u4f60\u8fd8\u6ca1\u6709 SSL\uff08\u5b89\u5168\u5957\u63a5\u5c42\uff09\u8bc1\u4e66\uff0c\u53ef\u4ee5\u5148\u7528 Let&#8217;s Encrypt \u514d\u8d39\u7533\u8bf7\u3002TLS \u52a0\u5bc6\u4e0d\u4ec5\u4fdd\u62a4\u90ae\u4ef6\u5185\u5bb9\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4e0d\u88ab\u7a83\u542c\uff0c\u4e5f\u662f\u8bb8\u591a\u90ae\u4ef6\u670d\u52a1\u5546\u5224\u65ad\u53d1\u4ef6\u65b9\u53ef\u4fe1\u5ea6\u7684\u91cd\u8981\u6307\u6807\u3002<\/p>\n<h2>\u5b89\u88c5\u548c\u914d\u7f6e Dovecot<\/h2>\n<p>Dovecot \u662f\u90ae\u4ef6\u6295\u9012\u4ee3\u7406\uff08MDA\uff09\uff0c\u8d1f\u8d23\u90ae\u4ef6\u7684\u5b58\u50a8\u548c\u5ba2\u6237\u7aef\u8bbf\u95ee\u3002\u7528\u6237\u901a\u8fc7 Outlook\u3001Thunderbird \u7b49\u90ae\u4ef6\u5ba2\u6237\u7aef\u6536\u53d1\u90ae\u4ef6\u65f6\uff0c\u80cc\u540e\u5c31\u662f Dovecot \u5728\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n<h3>\u5b89\u88c5 Dovecot<\/h3>\n<pre><code class=\"language-bash\">sudo apt install dovecot-core dovecot-imapd dovecot-lmtpd\n<\/code><\/pre>\n<h3>\u914d\u7f6e Dovecot<\/h3>\n<p>Dovecot \u7684\u914d\u7f6e\u5206\u5e03\u5728\u591a\u4e2a\u6587\u4ef6\u4e2d\uff0c\u4e3b\u8981\u9700\u8981\u4fee\u6539 <code>\/etc\/dovecot\/dovecot.conf<\/code>\uff08\u542f\u7528 IMAP \u534f\u8bae\uff09\u3001<code>\/etc\/dovecot\/conf.d\/10-mail.conf<\/code>\uff08\u90ae\u4ef6\u5b58\u50a8\u4f4d\u7f6e\uff09\u3001<code>\/etc\/dovecot\/conf.d\/10-auth.conf<\/code>\uff08\u8ba4\u8bc1\u65b9\u5f0f\uff09\u548c <code>\/etc\/dovecot\/conf.d\/10-ssl.conf<\/code>\uff08SSL \u914d\u7f6e\uff09\u3002<\/p>\n<p>\u5173\u952e\u914d\u7f6e\u5305\u62ec\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u542f\u7528 IMAP \u548c LMTP \u534f\u8bae\nprotocols = imap lmtp\n\n# \u90ae\u4ef6\u5b58\u50a8\u4f4d\u7f6e\nmail_location = maildir:~\/Maildir\n\n# \u8ba4\u8bc1\u65b9\u5f0f\nauth_mechanisms = plain login\ndisable_plaintext_auth = yes\n\n# SSL \u914d\u7f6e\nssl = required\nssl_cert = &lt;\/etc\/ssl\/certs\/mail.yourdomain.com.crt\nssl_key = &lt;\/etc\/ssl\/private\/mail.yourdomain.com.key\n<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u9700\u8981\u5728 <code>\/etc\/dovecot\/conf.d\/10-master.conf<\/code> \u4e2d\u914d\u7f6e Postfix \u8ba4\u8bc1\u5bf9\u63a5\uff0c\u8ba9 Dovecot \u80fd\u591f\u9a8c\u8bc1\u901a\u8fc7 Postfix \u63d0\u4ea4\u90ae\u4ef6\u7684\u7528\u6237\u8eab\u4efd\u3002<\/p>\n<p>\u91cd\u542f Dovecot \u4f7f\u914d\u7f6e\u751f\u6548\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo systemctl restart dovecot\nsudo systemctl enable dovecot\n<\/code><\/pre>\n<p>Dovecot \u548c Postfix \u7684\u534f\u4f5c\u5173\u7cfb\u662f\u8fd9\u6837\u7684\uff1aPostfix \u8d1f\u8d23\u4ece\u5916\u90e8\u63a5\u6536\u90ae\u4ef6\u5e76\u4ea4\u7ed9 Dovecot \u5b58\u50a8\uff0c\u7528\u6237\u901a\u8fc7 Dovecot \u63d0\u4f9b\u7684 IMAP \u670d\u52a1\u8bfb\u53d6\u90ae\u4ef6\uff1b\u5f53\u7528\u6237\u53d1\u9001\u90ae\u4ef6\u65f6\uff0cDovecot \u5148\u9a8c\u8bc1\u7528\u6237\u8eab\u4efd\uff0c\u518d\u5c06\u90ae\u4ef6\u4ea4\u7ed9 Postfix \u8f6c\u53d1\u5230\u76ee\u6807\u670d\u52a1\u5668\u3002<\/p>\n<h2>\u914d\u7f6e SPF \u548c DKIM \u90ae\u4ef6\u8ba4\u8bc1<\/h2>\n<p><img decoding=\"async\" alt=\"DNS\u8ba4\u8bc1\u8bb0\u5f55\u914d\u7f6e\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/vps-mail-server-postfix-dovecot-spf-dkim-dns.webp\" \/><\/p>\n<p>SPF \u548c DKIM \u662f\u76ee\u524d\u4e3b\u6d41\u7684\u90ae\u4ef6\u8ba4\u8bc1\u673a\u5236\uff0c\u80fd\u591f\u6709\u6548\u9632\u6b62\u4ed6\u4eba\u4f2a\u9020\u4f60\u7684\u57df\u540d\u53d1\u9001\u5783\u573e\u90ae\u4ef6\uff0c\u540c\u65f6\u663e\u8457\u63d0\u9ad8\u4f60\u7684\u90ae\u4ef6\u9001\u8fbe\u7387\u3002\u7f3a\u5c11\u8fd9\u4e24\u9879\u8ba4\u8bc1\u7684\u90ae\u4ef6\uff0c\u88ab Gmail\u3001Outlook \u7b49\u670d\u52a1\u5546\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u7684\u6982\u7387\u4f1a\u5927\u5e45\u4e0a\u5347\u3002<\/p>\n<h3>SPF \u914d\u7f6e<\/h3>\n<p>SPF\uff08Sender Policy Framework\uff0c\u53d1\u4ef6\u4eba\u7b56\u7565\u6846\u67b6\uff09\u901a\u8fc7 DNS TXT \u8bb0\u5f55\u58f0\u660e\u54ea\u4e9b IP \u5730\u5740\u6709\u6743\u4ee3\u8868\u4f60\u7684\u57df\u540d\u53d1\u9001\u90ae\u4ef6\u3002<\/p>\n<p>\u5728\u57df\u540d DNS \u7ba1\u7406\u4e2d\u6dfb\u52a0\u4e00\u6761 TXT \u8bb0\u5f55\uff1a<\/p>\n<pre><code>v=spf1 mx ip4:\u4f60\u7684VPS\u7684IP\u5730\u5740 -all\n<\/code><\/pre>\n<p>\u8fd9\u6761\u8bb0\u5f55\u7684\u542b\u4e49\u662f\uff1a\u5141\u8bb8 MX \u8bb0\u5f55\u4e2d\u58f0\u660e\u7684\u670d\u52a1\u5668\u548c\u6307\u5b9a IP \u53d1\u9001\u90ae\u4ef6\uff0c\u5176\u4ed6\u6240\u6709\u6765\u6e90\u4e00\u5f8b\u62d2\u7edd\uff08<code>-all<\/code>\uff09\u3002<\/p>\n<h3>DKIM \u914d\u7f6e<\/h3>\n<p>DKIM\uff08\u57df\u540d\u5bc6\u94a5\u8bc6\u522b\u90ae\u4ef6\uff09\u901a\u8fc7\u5728\u90ae\u4ef6\u5934\u90e8\u6dfb\u52a0\u6570\u5b57\u7b7e\u540d\uff0c\u8ba9\u6536\u4ef6\u65b9\u80fd\u591f\u9a8c\u8bc1\u90ae\u4ef6\u5185\u5bb9\u662f\u5426\u88ab\u7be1\u6539\u3002<\/p>\n<p>\u5b89\u88c5 OpenDKIM\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo apt install opendkim opendkim-tools\nsudo systemctl enable opendkim\n<\/code><\/pre>\n<p>\u751f\u6210 DKIM \u5bc6\u94a5\u5bf9\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo mkdir -p \/etc\/opendkim\/keys\/yourdomain.com\nsudo opendkim-genkey -D \/etc\/opendkim\/keys\/yourdomain.com -d yourdomain.com -s mail\nsudo chown -R opendkim:opendkim \/etc\/opendkim\n<\/code><\/pre>\n<p>\u914d\u7f6e <code>\/etc\/opendkim.conf<\/code>\uff0c\u4e3b\u8981\u53c2\u6570\u5305\u62ec\uff1a<\/p>\n<pre><code class=\"language-bash\">AutoRestart            Yes\nCanonicalization       relaxed\/simple\nMode                   sv\nSignatureAlgorithm     rsa-sha256\nSocket                 inet:8891@localhost\n<\/code><\/pre>\n<p>\u914d\u7f6e\u5bc6\u94a5\u8868\uff08KeyTable\uff09\u3001\u7b7e\u540d\u8868\uff08SigningTable\uff09\u548c\u53ef\u4fe1\u4e3b\u673a\u5217\u8868\uff08TrustedHosts\uff09\uff0c\u5c06\u4f60\u7684\u57df\u540d\u548c\u5bc6\u94a5\u8def\u5f84\u5173\u8054\u8d77\u6765\u3002\u5177\u4f53\u914d\u7f6e\u683c\u5f0f\u53ef\u4ee5\u53c2\u8003 OpenDKIM \u5b98\u65b9\u6587\u6863\u3002<\/p>\n<p>\u8bfb\u53d6\u516c\u94a5\u5e76\u6dfb\u52a0\u5230 DNS\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo cat \/etc\/opendkim\/keys\/yourdomain.com\/mail.txt\n<\/code><\/pre>\n<p>\u5c06\u8f93\u51fa\u5185\u5bb9\u6dfb\u52a0\u4e3a DNS TXT \u8bb0\u5f55\uff0c\u4e3b\u673a\u540d\u4e3a <code>mail._domainkey.yourdomain.com<\/code>\u3002<\/p>\n<p>\u6700\u540e\uff0c\u5c06 OpenDKIM \u4e0e Postfix \u5bf9\u63a5\u3002\u5728 <code>\/etc\/postfix\/main.cf<\/code> \u4e2d\u6dfb\u52a0\uff1a<\/p>\n<pre><code class=\"language-bash\">milter_default_action = accept\nmilter_protocol = 6\nsmtpd_milters = inet:localhost:8891\nnon_smtpd_milters = inet:localhost:8891\n<\/code><\/pre>\n<p>\u91cd\u542f\u76f8\u5173\u670d\u52a1\uff1a<\/p>\n<pre><code class=\"language-bash\">sudo systemctl restart opendkim\nsudo systemctl restart postfix\n<\/code><\/pre>\n<h2>\u6d4b\u8bd5\u90ae\u4ef6\u670d\u52a1\u5668<\/h2>\n<p>\u914d\u7f6e\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u9700\u8981\u9a8c\u8bc1\u90ae\u4ef6\u670d\u52a1\u5668\u662f\u5426\u6b63\u5e38\u5de5\u4f5c\u3002\u5982\u679c\u9047\u5230\u8fde\u63a5\u95ee\u9898\uff0c\u53ef\u4ee5\u53c2\u8003<a href=\"https:\/\/cn.hostease.com\/blog\/?p=27528\">\u56fd\u5916\u670d\u52a1\u5668\u52a0\u901f\u65b9\u6848<\/a>\u6765\u6392\u67e5\u7f51\u7edc\u5c42\u9762\u7684\u95ee\u9898\u3002<\/p>\n<h3>\u672c\u5730\u53d1\u9001\u6d4b\u8bd5<\/h3>\n<pre><code class=\"language-bash\">echo &quot;\u6d4b\u8bd5\u90ae\u4ef6\u6b63\u6587&quot; | mail -s &quot;\u6d4b\u8bd5\u4e3b\u9898&quot; your-email@gmail.com\n<\/code><\/pre>\n<h3>\u68c0\u67e5\u90ae\u4ef6\u5934\u8ba4\u8bc1\u7ed3\u679c<\/h3>\n<p>\u5728 Gmail \u4e2d\u6253\u5f00\u6536\u5230\u7684\u90ae\u4ef6\uff0c\u70b9\u51fb&#8221;\u663e\u793a\u539f\u59cb\u90ae\u4ef6&#8221;\uff0c\u67e5\u770b\u4ee5\u4e0b\u5b57\u6bb5\uff1a<\/p>\n<ul>\n<li><code>SPF: PASS<\/code> \u2014 SPF \u9a8c\u8bc1\u901a\u8fc7<\/li>\n<li><code>DKIM: PASS<\/code> \u2014 DKIM \u7b7e\u540d\u9a8c\u8bc1\u901a\u8fc7<\/li>\n<li><code>DMARC: PASS<\/code> \u2014 DMARC \u7b56\u7565\u68c0\u67e5\u901a\u8fc7<\/li>\n<\/ul>\n<h3>\u4f7f\u7528\u5728\u7ebf\u5de5\u5177\u8bca\u65ad<\/h3>\n<ul>\n<li><strong>MXToolbox<\/strong>\uff08mxtoolbox.com\uff09\uff1a\u68c0\u67e5 MX \u8bb0\u5f55\u3001SPF \u8bb0\u5f55\u3001DKIM \u8bb0\u5f55\u3001IP \u9ed1\u540d\u5355\u72b6\u6001<\/li>\n<li><strong>Mail-Tester<\/strong>\uff08mail-tester.com\uff09\uff1a\u53d1\u9001\u4e00\u5c01\u6d4b\u8bd5\u90ae\u4ef6\uff0c\u83b7\u5f97 0-10 \u5206\u7684\u9001\u8fbe\u7387\u8bc4\u5206<\/li>\n<li><strong>DKIM Validator<\/strong>\uff08dkimvalidator.com\uff09\uff1a\u9a8c\u8bc1 DKIM \u7b7e\u540d\u662f\u5426\u6b63\u786e<\/li>\n<\/ul>\n<p>\u5982\u679c\u6d4b\u8bd5\u7ed3\u679c\u663e\u793a SPF \u6216 DKIM \u9a8c\u8bc1\u5931\u8d25\uff0c\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662f DNS \u8bb0\u5f55\u683c\u5f0f\u9519\u8bef\u6216 TTL\uff08\u751f\u5b58\u65f6\u95f4\uff09\u672a\u751f\u6548\u3002DNS \u8bb0\u5f55\u7684\u5168\u7403\u751f\u6548\u65f6\u95f4\u901a\u5e38\u9700\u8981\u51e0\u5206\u949f\u5230 48 \u5c0f\u65f6\u4e0d\u7b49\uff0c\u4fee\u6539\u540e\u8bf7\u8010\u5fc3\u7b49\u5f85\u3002<\/p>\n<h2>\u5b89\u5168\u52a0\u56fa\u5efa\u8bae<\/h2>\n<p>\u90ae\u4ef6\u670d\u52a1\u5668\u662f\u9ed1\u5ba2\u653b\u51fb\u7684\u91cd\u70b9\u76ee\u6807\u3002\u4ee5\u4e0b\u51e0\u9879\u5b89\u5168\u63aa\u65bd\u5efa\u8bae\u5728\u521d\u59cb\u914d\u7f6e\u5b8c\u6210\u540e\u7acb\u5373\u5b9e\u65bd\uff1a<\/p>\n<ul>\n<li><strong>\u914d\u7f6e DMARC \u7b56\u7565<\/strong>\uff1a\u5728 DNS \u4e2d\u6dfb\u52a0 DMARC TXT \u8bb0\u5f55\uff0c\u6307\u5b9a SPF\/DKIM \u9a8c\u8bc1\u5931\u8d25\u65f6\u7684\u5904\u7406\u7b56\u7565\u3002\u521d\u671f\u5efa\u8bae\u8bbe\u7f6e\u4e3a <code>p=none<\/code>\uff08\u4ec5\u62a5\u544a\uff09\uff0c\u786e\u8ba4\u65e0\u8bef\u540e\u5207\u6362\u5230 <code>p=quarantine<\/code> \u6216 <code>p=reject<\/code><\/li>\n<li><strong>\u542f\u7528 Fail2Ban<\/strong>\uff1a\u5b89\u88c5 Fail2Ban \u9632\u66b4\u529b\u7834\u89e3\u5de5\u5177\uff0c\u76d1\u63a7 SMTP \u548c IMAP \u767b\u5f55\u5931\u8d25\u65e5\u5fd7\uff0c\u81ea\u52a8\u5c01\u7981\u53ef\u7591 IP<\/li>\n<li><strong>\u5b9a\u671f\u66f4\u65b0\u7cfb\u7edf<\/strong>\uff1a\u4fdd\u6301 Postfix\u3001Dovecot \u548c\u64cd\u4f5c\u7cfb\u7edf\u5904\u4e8e\u6700\u65b0\u7248\u672c\uff0c\u53ca\u65f6\u4fee\u8865\u5b89\u5168\u6f0f\u6d1e<\/li>\n<\/ul>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u5728 VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09\u4e0a\u642d\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\u5e76\u4e0d\u662f\u4e00\u4ef6\u7279\u522b\u590d\u6742\u7684\u4e8b\u60c5\uff0c\u4f46\u5b83\u6d89\u53ca DNS\u3001TLS \u52a0\u5bc6\u3001\u8ba4\u8bc1\u673a\u5236\u7b49\u591a\u4e2a\u6280\u672f\u9886\u57df\u7684\u914d\u5408\u3002\u6574\u4e2a\u6d41\u7a0b\u53ef\u4ee5\u6982\u62ec\u4e3a\u56db\u4e2a\u9636\u6bb5\uff1a\u57fa\u7840\u73af\u5883\u51c6\u5907\u3001Postfix\/Dovecot \u5b89\u88c5\u914d\u7f6e\u3001SPF\/DKIM \u8ba4\u8bc1\u8bbe\u7f6e\u3001\u6d4b\u8bd5\u4e0e\u5b89\u5168\u52a0\u56fa\u3002<\/p>\n<p>\u65e0\u8bba\u662f\u72ec\u7acb\u670d\u52a1\u5668\uff08\u7269\u7406\u670d\u52a1\u5668\uff09\u8fd8\u662f\u4e91\u670d\u52a1\u5668\uff08\u865a\u62df\u5316\u670d\u52a1\u5668\uff09\uff0c\u90fd\u53ef\u4ee5\u7528\u6765\u642d\u5efa\u90ae\u4ef6\u670d\u52a1\u3002\u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528 Hostease \u7684 VPS \u4ea7\u54c1\uff0c\u4e0a\u8ff0\u6240\u6709\u914d\u7f6e\u6b65\u9aa4\u90fd\u53ef\u4ee5\u76f4\u63a5\u5728\u670d\u52a1\u5668\u4e0a\u5b8c\u6210\u3002\u5efa\u8bae\u5148\u5728\u975e\u751f\u4ea7\u73af\u5883\u4e2d\u5b8c\u6574\u8d70\u4e00\u904d\u6d41\u7a0b\uff0c\u786e\u8ba4\u90ae\u4ef6\u6536\u53d1\u6b63\u5e38\u540e\u518d\u5207\u6362\u6b63\u5f0f\u57df\u540d\u3002\u5bf9\u4e8e\u90ae\u4ef6\u91cf\u8f83\u5927\u7684\u4e1a\u52a1\u573a\u666f\uff0c\u4e5f\u53ef\u4ee5\u8003\u8651\u642d\u914d\u4e13\u4e1a\u7684\u90ae\u4ef6\u4e2d\u7ee7\u670d\u52a1\u4f5c\u4e3a\u8865\u5145\u65b9\u6848\uff0c\u8fdb\u4e00\u6b65\u964d\u4f4e\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u7684\u98ce\u9669\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u624b\u628a\u624b\u6559\u4f60\u5982\u4f55\u5728VPS\u4e0a\u642d\u5efa\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u914d\u7f6ePostfix\u3001Dovecot\u3001SPF\u548cDKIM\uff0c\u89e3\u51b3\u90ae\u4ef6\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u7684\u95ee\u9898<\/p>\n","protected":false},"author":2,"featured_media":31494,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4099],"tags":[4379,3257,3255,3256,2662,628],"class_list":["post-31497","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials","tag-dkim","tag-dovecot","tag-postfix","tag-spf","tag-vps","tag-628"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/07\/vps-mail-server-postfix-dovecot-spf-dkim-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=31497"}],"version-history":[{"count":0,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/31497\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/31494"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=31497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=31497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=31497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}