\u5728\u81ea\u5efa\u90ae\u4ef6\u57fa\u7840\u8bbe\u65bd\u65f6\uff0c\u9009\u62e9\u5408\u9002\u7684\u4e3b\u673a\u4f4d\u7f6e\u548c\u914d\u7f6e\u5bf9\u9001\u8fbe\u7387\u5f71\u54cd\u5de8\u5927\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728\u9999\u6e2fVPS\u4e0a\u5feb\u901f\u90e8\u7f72Postfix\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u6db5\u76d6\u5b89\u88c5\u3001\u57fa\u672c\u4e0e\u8fdb\u9636\u914d\u7f6e\u3001\u9001\u8fbe\u4f18\u5316\u4e0e\u6392\u67e5\u65b9\u6cd5\u3002\u6587\u7ae0\u540c\u65f6\u5bf9\u6bd4\u9999\u6e2f\u8282\u70b9\u4e0e\u7f8e\u56fdVPS\/\u7f8e\u56fd\u670d\u52a1\u5668\u5728\u90ae\u4ef6\u670d\u52a1\u573a\u666f\u4e0b\u7684\u4f18\u52bf\u4e0e\u6ce8\u610f\u70b9\uff0c\u5e2e\u52a9\u4f60\u505a\u51fa\u66f4\u5408\u9002\u7684\u9009\u8d2d\u51b3\u7b56\u3002<\/p>\n
\u9999\u6e2fVPS\u901a\u5e38\u5177\u5907\u4f18\u826f\u7684\u56fd\u9645\u5e26\u5bbd\u4e0e\u4f4e\u5ef6\u8fdf\uff0c\u5bf9\u9762\u5411\u4e9a\u592a\u5730\u533a\u7684\u90ae\u4ef6\u6295\u9012\u6709\u5929\u7136\u4f18\u52bf\u3002\u76f8\u8f83\u4e8e\u7f8e\u56fdVPS\u6216\u4f4d\u4e8e\u5927\u9646\u7684\u4e3b\u673a\uff0c\u9999\u6e2f\u670d\u52a1\u5668\u5728\u7f51\u7edc\u53ef\u8fbe\u6027\u548c\u5408\u89c4\u6027\u4e4b\u95f4\u63d0\u4f9b\u5e73\u8861\uff0c\u9002\u5408\u8de8\u56fd\u4f01\u4e1a\u4e0e\u5916\u8d38\u4e1a\u52a1\u3002\u4f7f\u7528Postfix\u4f5c\u4e3aMTA\uff0c\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u6027\u80fd\u3001\u53ef\u6269\u5c55\u4e14\u914d\u7f6e\u7075\u6d3b\u7684\u90ae\u4ef6\u53d1\u9001\u4e0e\u4e2d\u7ee7\u3002<\/p>\n
\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u8bf7\u51c6\u5907\uff1a<\/p>\n
\u793a\u4f8b\u547d\u4ee4\uff1a<\/p>\n
\u5b89\u88c5\u65f6\u9009\u62e9\u201cInternet Site\u201d\uff0c\u5e76\u5c06\u7cfb\u7edf\u90ae\u4ef6\u540d\u8bbe\u7f6e\u4e3a\u4f60\u7684\u4e3b\u57df\u540d\uff08\u5982 mail.example.com\uff09\u3002<\/p>\n \u63a8\u8350\u7684\u5173\u952e\u914d\u7f6e\uff08\u6458\u5f55\u5e76\u8bf4\u660e\uff09\uff1a<\/p>\n \u4f7f\u7528Certbot\u83b7\u53d6\u8bc1\u4e66\uff1a<\/p>\n \u5728Postfix\u4e2d\u6307\u5b9a\u8bc1\u4e66\uff1a<\/p>\n \u542f\u7528SASL\u4ee5\u5141\u8bb8\u5ba2\u6237\u7aef\u901a\u8fc7587\u63d0\u4ea4\u90ae\u4ef6\uff1a<\/p>\n \u5728Postfix\u914d\u7f6e\u4e2d\uff1a<\/p>\n \u5728Dovecot\u4e2d\u542f\u7528socket\uff08\/etc\/dovecot\/conf.d\/10-master.conf\uff09\uff1a<\/p>\n \u5e76\u786e\u4fddDovecot\u6b63\u786e\u914d\u7f6e\u7528\u6237\u90ae\u7bb1\u5b58\u50a8\uff08Maildir\u6216mbox\uff09\uff0c\u4ee5\u53ca\u8ba4\u8bc1\u673a\u5236\uff08plain\u3001login\u3001CRAM-MD5\u53ef\u9009\uff09\u3002<\/p>\n \u5728DNS\u4e2d\u6dfb\u52a0\u4e00\u6761TXT\u8bb0\u5f55\uff0c\u4f8b\u5982\uff1a<\/p>\n \u786e\u4fdd\u5217\u51fa\u6240\u6709\u53ef\u80fd\u53d1\u9001\u8be5\u57df\u90ae\u4ef6\u7684IP\/\u4e2d\u7ee7\u670d\u52a1\uff08\u5305\u62ec\u7f8e\u56fdVPS\u6216\u7b2c\u4e09\u65b9\u670d\u52a1\uff09\u3002<\/p>\n \u4f7f\u7528OpenDKIM\uff1a<\/p>\n \u6dfb\u52a0DMARC TXT\u8bb0\u5f55\u4ee5\u76d1\u63a7\u548c\u5f3a\u5236\u7b56\u7565\uff1a<\/p>\n \u521d\u671f\u5efa\u8bae\u4f7f\u7528 p=none<\/strong> \u6216 p=quarantine<\/strong> \u4ee5\u4fbf\u89c2\u5bdf\u5f71\u54cd\uff0c\u518d\u9010\u6b65\u4e25\u683c\u5316\u3002<\/p>\n \u642c\u5230\u9999\u6e2fVPS\u65f6\u9700\u8054\u7cfb\u4f9b\u5e94\u5546\u8bbe\u7f6ePTR\uff0c\u8bbe\u7f6e\u4e3a\u4f60\u7684\u90ae\u4ef6\u4e3b\u673aFQDN\uff08mail.example.com\uff09\u3002PTR\u4e0eHELO\/EHLO\u4e3b\u673a\u540d\u4e0d\u5339\u914d\u4f1a\u5bfc\u81f4\u63a5\u6536\u65b9\u62d2\u4fe1\u6216\u964d\u6743\u3002<\/p>\n \u63d0\u9ad8\u53d1\u9001\u6027\u80fd\u4e0e\u51cf\u5c11\u88ab\u5224\u4e3a\u5783\u573e\u90ae\u4ef6\u7684\u51e0\u6761\u5b9e\u7528\u5efa\u8bae\uff1a<\/p>\n \u5e38\u7528\u65e5\u5fd7\u6587\u4ef6\uff1a<\/p>\n \u5e38\u89c1\u6545\u969c\u4e0e\u6392\u67e5\u8981\u70b9\uff1a<\/p>\n \u9009\u62e9\u90e8\u7f72\u4f4d\u7f6e\u65f6\u8981\u8003\u8651\u76ee\u6807\u7528\u6237\u4e0e\u5408\u89c4\uff1a<\/p>\n \u5728\u9999\u6e2fVPS\u4e0a\u5feb\u901f\u90e8\u7f72Postfix\u90ae\u4ef6\u670d\u52a1\u5668\u65e2\u80fd\u517c\u987e\u6027\u80fd\u4e0e\u56fd\u9645\u63a5\u5165\uff0c\u53c8\u4fbf\u4e8e\u9762\u5411\u4e9a\u592a\u7528\u6237\u4f18\u5316\u9001\u8fbe\u7387\u3002\u5173\u952e\u5728\u4e8e\u6b63\u786e\u914d\u7f6eTLS\u3001SASL\u3001SPF\u3001DKIM\u3001DMARC\u4e0ePTR\uff0c\u5e76\u7ed3\u5408\u5408\u7406\u7684\u53d1\u4fe1\u901f\u7387\u548c\u961f\u5217\u7ba1\u7406\u6765\u63d0\u5347\u4fe1\u8a89\u5ea6\u3002\u9488\u5bf9\u8de8\u533a\u57df\u4e1a\u52a1\uff0c\u53ef\u4ee5\u91c7\u7528\u6df7\u5408\u90e8\u7f72\u7b56\u7565\uff0c\u7ed3\u5408\u9999\u6e2fVPS\u4e0e\u7f8e\u56fdVPS\/\u7f8e\u56fd\u670d\u52a1\u5668\u7684\u4f18\u52bf\u3002\u82e5\u4f60\u6b63\u5728\u8003\u8651\u8d2d\u4e70\u6216\u5347\u7ea7\u4e3b\u673a\uff0cServer.HK \u63d0\u4f9b\u591a\u79cd\u9999\u6e2fVPS\u65b9\u6848\u4e0e\u5f39\u6027\u914d\u7f6e\uff0c\u65b9\u4fbf\u5feb\u901f\u642d\u5efa\u4e0e\u6d4b\u8bd5\u90ae\u4ef6\u670d\u52a1\u3002<\/p>\n \u76f8\u5173\u4ea7\u54c1\u4e0e\u8d2d\u4e70\u94fe\u63a5\uff1a<\/p>\n \u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u4e0e\u5f00\u53d1\u8005\uff0c\u672c\u6587\u8be6\u89e3\u5728\u9999\u6e2fVPS \u90e8\u7f72 Postfix \u7684\u5168\u6d41\u7a0b\uff0c\u4ece\u5b89\u88c5\u4e0e\u57fa\u7840\u914d\u7f6e\u5230\u9001\u8fbe\u4f18\u5316\u4e0e\u6545\u969c\u6392\u67e5\uff0c\u5e2e\u52a9\u4f60\u5feb\u901f\u642d\u5efa\u9ad8\u6548\u4e14\u9ad8\u9001\u8fbe\u7387\u7684\u90ae\u4ef6\u670d\u52a1\u5668\u3002\u8fd8\u5c06\u6bd4\u8f83\u9999\u6e2f\u4e0e\u7f8e\u56fd\u8282\u70b9\u7684\u4f18\u52bf\uff0c\u52a9\u4f60\u9009\u62e9\u6700\u9002\u5408\u7684\u4e3b\u673a\u4f4d\u7f6e\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4927],"tags":[1105,1109,1108,1110,1106,1107,107,1104],"class_list":["post-208752","post","type-post","status-publish","format-standard","hentry","category-4927","tag-postfix","tag-smtp","tag-spf-dkim-dmarc","tag-1110","tag-1106","tag-1107","tag-vps","tag-vpspostfix"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=208752"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208752\/revisions"}],"predecessor-version":[{"id":208753,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208752\/revisions\/208753"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}sudo apt update && sudo apt install postfix mailutils dovecot-imapd opendkim opendkim-tools -y<\/code><\/p>\nPostfix\u4e3b\u914d\u7f6e\u6587\u4ef6\u5173\u952e\u9879 \/etc\/postfix\/main.cf<\/h3>\n
\n
\u5b89\u5168\u4e0e\u8ba4\u8bc1\uff1aTLS\u3001SASL\u3001Dovecot<\/h2>\n
TLS\u52a0\u5bc6\uff08\u4f7f\u7528Let’s Encrypt\uff09<\/h3>\n
sudo apt install certbot && sudo certbot certonly --standalone -d mail.example.com<\/code><\/p>\nsmtp_tls_security_level = may
smtp_tls_CAfile = \/etc\/ssl\/certs\/ca-certificates.crt
smtpd_tls_cert_file = \/etc\/letsencrypt\/live\/mail.example.com\/fullchain.pem
smtpd_tls_key_file = \/etc\/letsencrypt\/live\/mail.example.com\/privkey.pem<\/code><\/p>\nSASL\u8ba4\u8bc1\u4e0eDovecot\u96c6\u6210<\/h3>\n
smtpd_sasl_type = dovecot
smtpd_sasl_path = private\/auth
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous<\/code><\/p>\nunix_listener \/var\/spool\/postfix\/private\/auth { mode = 0660 user = postfix group = postfix }<\/code><\/p>\n\u9001\u8fbe\u7387\u4f18\u5316\uff1aSPF\u3001DKIM\u3001DMARC\u4e0ePTR<\/h2>\n
SPF\uff08\u53d1\u4fe1\u7b56\u7565\uff09<\/h3>\n
v=spf1 ip4:203.0.113.10 include:servers.example.net -all<\/code><\/p>\nDKIM\uff08\u7b7e\u540d\uff09<\/h3>\n
\n
opendkim-genkey -s default -d example.com<\/code><\/li>\nmilter_default_action = accept<\/code> \u4e0e milter_protocol = 2<\/code>\uff0c\u5e76\u5728 smtpd_milters = unix:\/opendkim\/opendkim.sock<\/code>\u3002<\/li>\n<\/ul>\nDMARC\uff08\u7b56\u7565\u4e0e\u62a5\u544a\uff09<\/h3>\n
_dmarc.example.com TXT \"v=DMARC1; p=quarantine; rua=mailto:dmarc-rua@example.com; ruf=mailto:dmarc-ruf@example.com; pct=100\"<\/code><\/p>\nPTR\uff08\u53cd\u5411DNS\uff09<\/h3>\n
\u6027\u80fd\u4e0e\u53cd\u5783\u573e\u9488\u5bf9\u7b56<\/h2>\n
\n
default_destination_concurrency_limit<\/code> \u4e0e smtp_destination_rate_delay<\/code>\u3002<\/li>\npostqueue -p<\/code> \u4e0e postsuper<\/code> \u6e05\u7406\u961f\u5217\uff0c\u5e76\u76d1\u63a7 \/var\/log\/mail.log\u3002<\/li>\n\u65e5\u5fd7\u3001\u6392\u9519\u4e0e\u5e38\u89c1\u95ee\u9898<\/h2>\n
\n
\n
\u9999\u6e2fVPS vs \u7f8e\u56fdVPS\/\u7f8e\u56fd\u670d\u52a1\u5668\uff1a\u5e94\u7528\u573a\u666f\u4e0e\u9009\u8d2d\u5efa\u8bae<\/h2>\n
\n
\u9009\u8d2d\u5efa\u8bae<\/h2>\n
\n
\u603b\u7ed3<\/h2>\n
\n