{"id":5178,"date":"2026-01-10T20:11:51","date_gmt":"2026-01-10T11:11:51","guid":{"rendered":"https:\/\/eternalsphere.net\/echoes\/?p=5178"},"modified":"2026-06-06T08:20:45","modified_gmt":"2026-06-05T23:20:45","slug":"yjenem9uh5kyqmd","status":"publish","type":"post","link":"https:\/\/eternalsphere.net\/echoes\/index.php\/2026\/01\/10\/yjenem9uh5kyqmd\/","title":{"rendered":"\u4e00\u6b21\u5178\u578b\u7684 Postfix \u90ae\u4ef6\u5806\u79ef\u4e8b\u6545\uff1a\u4ece DNS \u9519\u8bef\u5230 SMTPUTF8 \u534f\u8bae\u4e0d\u5339\u914d"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u6458\u8981<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u67d0\u53f0\u8fd0\u884c Postfix \u7684 Linux \u670d\u52a1\u5668\u5728\u8fde\u7eed\u591a\u5929\u5185\u65e0\u6cd5\u5411\u81ea\u5efa Mailcow \u90ae\u4ef6\u670d\u52a1\u5668\u53d1\u9001\u7cfb\u7edf\u544a\u8b66\u90ae\u4ef6\uff0c\u90ae\u4ef6\u961f\u5217\u6301\u7eed\u589e\u957f\u3002\u8868\u9762\u9519\u8bef\u4e3a DNS \u89e3\u6790\u5931\u8d25\uff08<code>4.4.3 Host not found<\/code>\uff09\uff0c\u5728 DNS \u4fee\u590d\u540e\u4ecd\u5b58\u5728\u6295\u9012\u5f02\u5e38\u3002\u6700\u7ec8\u53d1\u73b0\u662f <strong>SMTPUTF8 \u534f\u8bae\u80fd\u529b\u4e0d\u5339\u914d<\/strong>\u5bfc\u81f4\u90e8\u5206\u90ae\u4ef6\u88ab\u6c38\u4e45\u62d2\u7edd\uff08<code>5.6.7<\/code>\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u5b8c\u6574\u8bb0\u5f55\u8be5\u4e8b\u6545\u7684\u8bca\u65ad\u8def\u5f84\u4e0e\u4fee\u590d\u7b56\u7565\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u4e8b\u6545\u73b0\u8c61<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix \u65e5\u5fd7\u4e2d\u6301\u7eed\u51fa\u73b0\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dsn=4.4.3\nstatus=deferred\nHost or domain name not found. Name service error for name=mail.example.net type=A\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u90ae\u4ef6\u961f\u5217\u4e2d\u79ef\u538b\u591a\u5c01\u7cfb\u7edf\u90ae\u4ef6\uff08root \u2192 admin\uff09\uff0c\u65f6\u95f4\u8de8\u5ea6\u8d85\u8fc7 5 \u5929\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. \u7b2c\u4e00\u5c42\u95ee\u9898\uff1aDNS \u6545\u969c\u5bfc\u81f4\u957f\u671f\u961f\u5217\u5806\u79ef<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u68c0\u67e5\u53d1\u73b0\u7cfb\u7edf\u7684 <code>\/etc\/resolv.conf<\/code> \u66fe\u6307\u5411\u9519\u8bef\u7684\u7f51\u5173\u5730\u5740\uff08\u4f8b\u5982 192.168.0.1 \u800c\u4e0d\u662f\u5b9e\u9645\u4f7f\u7528\u7684 192.168.1.1\uff09\uff0c\u5bfc\u81f4 Postfix \u5728\u90a3\u6bb5\u65f6\u95f4\u65e0\u6cd5\u89e3\u6790 <code>mail.example.net<\/code>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNS \u4fee\u590d\u540e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>getent ahosts mail.example.net\ndig +short A mail.example.net @1.1.1.1\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5747\u8fd4\u56de\u6b63\u786e IPv4 \u5730\u5740\uff0c\u8bf4\u660e\u7cfb\u7edf DNS \u5df2\u6062\u590d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u90ae\u4ef6\u4ecd\u4e0d\u65ad\u5931\u8d25\uff0c\u662f\u56e0\u4e3a Postfix \u4f1a\u5bf9 4.x.x \u9519\u8bef\u8fdb\u884c\u6307\u6570\u9000\u907f\u5f0f\u91cd\u8bd5\uff0c\u65e7\u90ae\u4ef6\u4f1a\u5728\u4e4b\u540e\u88ab\u4e0d\u65ad\u91cd\u65b0\u6295\u9012\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. \u5f3a\u5236\u91cd\u6295\u9012\u540e\u53d1\u73b0\u65b0\u7684\u771f\u5b9e\u9519\u8bef<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>postqueue -f\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u540e\uff0c\u5927\u91cf\u5386\u53f2\u90ae\u4ef6\u4e00\u6b21\u6027\u6210\u529f\u53d1\u9001\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u65b0\u53d1\u9001\u7684\u6d4b\u8bd5\u90ae\u4ef6\u4ecd\u7136\u5931\u8d25\uff0c\u5e76\u5728 <code>\/var\/log\/mail.log<\/code> \u4e2d\u51fa\u73b0\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dsn=5.6.7\nstatus=bounced\nSMTPUTF8 is required, but was not offered by host\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u610f\u5473\u7740\uff1a<br>DNS \u548c\u7f51\u7edc\u5df2\u7ecf\u6062\u590d\uff0c\u4f46 SMTP \u534f\u8bae\u5c42\u5b58\u5728\u4e0d\u517c\u5bb9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u6839\u672c\u539f\u56e0\uff1aSMTPUTF8 \u534f\u8bae\u80fd\u529b\u4e0d\u5339\u914d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SMTPUTF8 \u662f RFC 6531 \u5b9a\u4e49\u7684\u6269\u5c55\uff0c\u7528\u4e8e\u652f\u6301 UTF-8 \u90ae\u4ef6\u5730\u5740\u548c\u5934\u90e8\uff08EAI\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53d1\u9001\u7aef\uff08Postfix\uff09\u5728\u67d0\u4e9b\u90ae\u4ef6\u4e0a\u5224\u5b9a\u201c\u5fc5\u987b\u4f7f\u7528 SMTPUTF8\u201d\uff0c\u4f46\u63a5\u6536\u7aef\uff08Mailcow \u7684 Postfix\uff09\u5728 EHLO \u4e2d\u5e76\u672a\u58f0\u660e\u652f\u6301\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>250-PIPELINING\n250-SIZE\n250-AUTH\n250-8BITMIME\n250-DSN\n(\u6ca1\u6709 SMTPUTF8)\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e8e\u662f\u53d1\u9001\u7aef\u62d2\u7edd\u6295\u9012\u5e76\u76f4\u63a5 bounce\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u6700\u7a33\u59a5\u7684\u4fee\u590d\u65b9\u6848\uff1a\u5173\u95ed\u53d1\u9001\u7aef SMTPUTF8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8fd9\u79cd\u67b6\u6784\u4e0b\uff0c\u8be5 Postfix \u4ec5\u7528\u4e8e\u53d1\u9001\u7cfb\u7edf\u901a\u77e5\uff08ASCII \u5730\u5740\uff09\uff0c\u4e0d\u9700\u8981 EAI \u80fd\u529b\uff0c\u56e0\u6b64\u53ef\u4ee5\u5b89\u5168\u5173\u95ed SMTPUTF8 \u8981\u6c42\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6267\u884c\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>postconf -e 'smtputf8_enable = no'\nsystemctl restart postfix\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e4b\u540e\u518d\u6b21\u53d1\u9001\u5305\u542b UTF-8 \u6807\u9898\u7684\u6d4b\u8bd5\u90ae\u4ef6\uff0c\u6295\u9012\u6210\u529f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u6e05\u7406\u5386\u53f2\u961f\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNS \u9519\u8bef\u65f6\u671f\u79ef\u538b\u7684\u90ae\u4ef6\u53ef\u76f4\u63a5\u6e05\u7a7a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>postsuper -d ALL\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u6216\u5220\u9664\u5355\u4e2a\u6b8b\u7559\u961f\u5217\u9879\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">7. \u7ecf\u9a8c\u603b\u7ed3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6b21\u4e8b\u6545\u4f53\u73b0\u4e86\u4e24\u4e2a\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u5c42\u9762\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uff081\uff09DNS \u9519\u8bef\u7684\u201c\u6ede\u540e\u6548\u5e94\u201d<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Postfix \u5bf9 4.x.x \u9519\u8bef\u4f1a\u957f\u671f\u91cd\u8bd5\uff0c\u5373\u4f7f DNS \u5df2\u6062\u590d\uff0c\u4e5f\u4f1a\u4e0d\u65ad\u91cd\u653e\u5386\u53f2\u5931\u8d25\u90ae\u4ef6\uff0c\u5236\u9020\u201c\u7cfb\u7edf\u4ecd\u7136\u6545\u969c\u201d\u7684\u9519\u89c9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uff082\uff09SMTPUTF8 \u662f\u9690\u85cf\u7684\u534f\u8bae\u70b8\u5f39<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5373\u4f7f SMTP \u8fde\u63a5\u6210\u529f\uff0c\u5982\u679c EAI \u80fd\u529b\u4e0d\u5339\u914d\uff0c\u4e5f\u4f1a\u5728 DATA \u9636\u6bb5\u88ab\u6c38\u4e45\u62d2\u7edd\uff085.x.x\uff09\uff0c\u4e0e DNS\u3001TLS \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\">8. \u6700\u7ec8\u7a33\u5b9a\u72b6\u6001<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7cfb\u7edf\u6700\u7ec8\u8fbe\u6210\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DNS \u89e3\u6790\u6b63\u5e38<\/li>\n\n\n\n<li>Postfix \u2192 Mailcow SMTP over TLS \u8fde\u63a5\u6b63\u5e38<\/li>\n\n\n\n<li>SMTPUTF8 \u5728\u53d1\u9001\u7aef\u5173\u95ed<\/li>\n\n\n\n<li>\u90ae\u4ef6\u961f\u5217\u6e05\u7a7a<\/li>\n\n\n\n<li>\u7cfb\u7edf\u544a\u8b66\u90ae\u4ef6\u7a33\u5b9a\u6295\u9012<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u590d\u6742\u90ae\u4ef6\u7cfb\u7edf\u4e2d\uff0c<strong>DNS\u3001\u961f\u5217\u673a\u5236\u4e0e SMTP \u6269\u5c55\u534f\u8bae<\/strong>\u4f1a\u53e0\u52a0\u51fa\u975e\u5e38\u8ff7\u60d1\u7684\u6545\u969c\u8868\u73b0\u3002<br>\u53ea\u6709\u9010\u5c42\u5265\u79bb\uff08\u89e3\u6790 \u2192 \u8fde\u63a5 \u2192 \u534f\u8bae\u80fd\u529b \u2192 \u961f\u5217\u884c\u4e3a\uff09\uff0c\u624d\u80fd\u51c6\u786e\u5b9a\u4f4d\u771f\u5b9e\u6545\u969c\u70b9\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u6b21\u4e8b\u4ef6\u7684\u6839\u56e0\u4e0d\u662f\u5355\u70b9\u5931\u8d25\uff0c\u800c\u662f\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\">DNS \u9519\u8bef\u89e6\u53d1\u5806\u79ef + SMTPUTF8 \u80fd\u529b\u4e0d\u5339\u914d\u89e6\u53d1\u6700\u7ec8\u9000\u4fe1<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u5178\u578b\u3001\u4e5f\u975e\u5e38\u5177\u6709\u6559\u5b66\u4ef7\u503c\u7684\u5b9e\u6218\u6848\u4f8b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6458\u8981 \u67d0\u53f0\u8fd0\u884c Postfix \u7684 Linux \u670d\u52a1\u5668\u5728\u8fde\u7eed\u591a\u5929\u5185\u65e0\u6cd5\u5411\u81ea\u5efa Mailcow \u90ae\u4ef6\u670d\u52a1\u5668\u53d1\u9001\u7cfb\u7edf\u544a\u8b66\u90ae\u4ef6\uff0c\u90ae\u4ef6\u961f\u5217\u6301\u7eed\u589e\u957f\u3002\u8868\u9762\u9519\u8bef\u4e3a DNS \u89e3\u6790\u5931\u8d25\uff084.4.3 Host not found\uff09\uff0c\u5728 DNS \u4fee\u590d\u540e\u4ecd\u5b58\u5728\u6295\u9012\u5f02\u5e38\u3002\u6700\u7ec8\u53d1\u73b0\u662f SMTPUTF8 \u534f\u8bae\u80fd\u529b\u4e0d\u5339\u914d\u5bfc\u81f4\u90e8\u5206\u90ae\u4ef6\u88ab\u6c38\u4e45\u62d2\u7edd\uff085.6.7\uff09\u3002 \u672c\u6587\u5b8c\u6574\u8bb0\u5f55\u8be5\u4e8b\u6545\u7684\u8bca\u65ad\u8def\u5f84\u4e0e\u4fee\u590d\u7b56\u7565\u3002 1. \u4e8b\u6545\u73b0\u8c61 Postfix \u65e5\u5fd7\u4e2d\u6301\u7eed\u51fa\u73b0\uff1a \u90ae\u4ef6\u961f\u5217\u4e2d\u79ef\u538b\u591a\u5c01\u7cfb\u7edf\u90ae\u4ef6\uff08root \u2192 admin\uff09\uff0c\u65f6\u95f4\u8de8\u5ea6\u8d85\u8fc7 5 \u5929\u3002 2. \u7b2c\u4e00\u5c42\u95ee\u9898\uff1aDNS \u6545\u969c\u5bfc\u81f4\u957f\u671f\u961f\u5217\u5806\u79ef \u68c0\u67e5\u53d1\u73b0\u7cfb\u7edf\u7684 \/etc\/resolv.conf \u66fe\u6307\u5411\u9519\u8bef\u7684\u7f51\u5173\u5730\u5740\uff08\u4f8b\u5982 192.168.0.1 \u800c\u4e0d\u662f\u5b9e\u9645\u4f7f\u7528\u7684 192.168.1.1\uff09\uff0c\u5bfc\u81f4 Postfix \u5728\u90a3\u6bb5\u65f6\u95f4\u65e0\u6cd5\u89e3\u6790 mail.example.net\u3002 DNS \u4fee\u590d\u540e\uff1a \u5747\u8fd4\u56de\u6b63\u786e IPv4 \u5730\u5740\uff0c\u8bf4\u660e\u7cfb\u7edf DNS \u5df2\u6062\u590d\u3002 \u4f46\u90ae\u4ef6\u4ecd\u4e0d\u65ad\u5931\u8d25\uff0c\u662f\u56e0\u4e3a Postfix \u4f1a\u5bf9 4.x.x &hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-5178","post","type-post","status-publish","format-standard","hentry","category-1s3b6h7r2zay02x"],"_links":{"self":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/5178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/comments?post=5178"}],"version-history":[{"count":1,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/5178\/revisions"}],"predecessor-version":[{"id":5179,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/posts\/5178\/revisions\/5179"}],"wp:attachment":[{"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/media?parent=5178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/categories?post=5178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eternalsphere.net\/echoes\/index.php\/wp-json\/wp\/v2\/tags?post=5178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}