{"id":34293,"date":"2026-11-05T18:00:00","date_gmt":"2026-11-05T10:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=34293"},"modified":"2026-11-06T18:14:31","modified_gmt":"2026-11-06T10:14:31","slug":"shared-hosting-email-dns-bounce-order","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/shared-hosting-email-dns-bounce-order\/","title":{"rendered":"\u865a\u62df\u4e3b\u673a\u4f01\u4e1a\u90ae\u7bb1\u914d\u7f6e\uff1a\u57df\u540d\u89e3\u6790\u4e0e\u9000\u4fe1\u539f\u56e0\u6392\u67e5\u987a\u5e8f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-email-cover.webp\" alt=\"\u865a\u62df\u4e3b\u673a\u4f01\u4e1a\u90ae\u7bb1\u914d\u7f6e\u7684\u5c01\u9762\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<p>\u4f01\u4e1a\u90ae\u7bb1\u5728[\u865a\u62df\u4e3b\u673a](https:\/\/cn.hostease.com\/shared-hosting.html)\u4e0a\u51fa\u95ee\u9898\uff0c\u591a\u6570\u65f6\u5019\u90ae\u7bb1\u672c\u8eab\u6ca1\u574f\uff0c\u574f\u7684\u662f\u914d\u7f6e\u987a\u5e8f\u3002\u57df\u540d\u8bb0\u5f55\u8fd8\u6ca1\u751f\u6548\u5c31\u53bb\u6539\u5ba2\u6237\u7aef\uff0c\u6536\u5230\u4e00\u5c01\u9000\u4fe1\u5c31\u6362 SMTP \u7aef\u53e3\uff0c\u8fd9\u7c7b\u64cd\u4f5c\u4f1a\u628a\u4e00\u4e2a\u5341\u5206\u949f\u80fd\u89e3\u51b3\u7684\u95ee\u9898\u62d6\u6210\u4e09\u5929\u3002\u8fd9\u7bc7\u6587\u7ae0\u6309\u771f\u5b9e\u6392\u969c\u987a\u5e8f\u8bb2\u6e05\u695a\uff1a\u57df\u540d\u89e3\u6790\u8bb0\u5f55\u5e94\u8be5\u600e\u4e48\u6392\u3001\u4f01\u4e1a\u90ae\u7bb1\u5728\u865a\u62df\u4e3b\u673a\u4e0a\u5982\u4f55\u914d\u7f6e\u3001\u9000\u4fe1\u51fa\u73b0\u540e\u5982\u4f55\u4ece\u8fd4\u56de\u7801\u4e00\u8def\u67e5\u5230\u53d1\u4fe1\u58f0\u8a89\uff0c\u6bcf\u4e00\u6b65\u90fd\u7ed9\u51fa\u53ef\u9a8c\u8bc1\u7684\u547d\u4ee4\u6216\u5bf9\u7167\u503c\u3002<\/p>\n<h2>\u4e00\u3001\u5148\u753b\u6e05\u695a\u4f01\u4e1a\u90ae\u7bb1\u7684\u4e09\u6bb5\u94fe\u8def<\/h2>\n<p>\u4e00\u5c01\u90ae\u4ef6\u4ece\u70b9\u51fb\u53d1\u9001\u5230\u8fdb\u5165\u5bf9\u65b9\u6536\u4ef6\u7bb1\uff0c\u4e2d\u95f4\u53ea\u6709\u4e09\u6bb5\uff1a\u5ba2\u6237\u7aef\u5230\u53d1\u4fe1\u670d\u52a1\u5668\u3001\u53d1\u4fe1\u670d\u52a1\u5668\u5230\u6536\u4ef6\u670d\u52a1\u5668\u3001\u6536\u4ef6\u670d\u52a1\u5668\u505a\u7b56\u7565\u5224\u65ad\u3002\u4e09\u6bb5\u5206\u522b\u7531\u4e0d\u540c\u7684\u8bb0\u5f55\u548c\u53c2\u6570\u63a7\u5236\uff0c\u6df7\u5728\u4e00\u8d77\u6539\uff0c\u5c31\u5931\u53bb\u4e86\u5224\u65ad\u54ea\u4e00\u6bb5\u5931\u8d25\u7684\u80fd\u529b\u3002<\/p>\n<p>\u6536\u4fe1\u8fd9\u4e00\u6bb5\u770b MX \u8bb0\u5f55\uff0c\u5b83\u544a\u8bc9\u5916\u754c\u8fd9\u4e2a\u57df\u540d\u7684\u90ae\u4ef6\u5e94\u8be5\u6295\u9012\u5230\u54ea\u53f0\u670d\u52a1\u5668\uff0c\u8bb0\u5f55\u540e\u9762\u8ddf\u7684\u4f18\u5148\u7ea7\u6570\u5b57\u8d8a\u5c0f\u8d8a\u4f18\u5148\u3002\u8ba4\u8bc1\u8fd9\u4e00\u6bb5\u770b SPF\u3001DKIM\u3001DMARC \u4e09\u7c7b TXT \u8bb0\u5f55\uff1aSPF \u58f0\u660e\u54ea\u4e9b\u670d\u52a1\u5668\u6709\u6743\u4ee3\u4f60\u7684\u57df\u540d\u53d1\u4fe1\uff0cDKIM \u7528\u79c1\u94a5\u7ed9\u90ae\u4ef6\u7b7e\u540d\u3001\u518d\u628a\u516c\u94a5\u653e\u8fdb\u57df\u540d\u8bb0\u5f55\u4f9b\u5bf9\u65b9\u9a8c\u8bc1\uff0cDMARC \u5219\u89c4\u5b9a\u8ba4\u8bc1\u5931\u8d25\u65f6\u6536\u4ef6\u65b9\u600e\u4e48\u5904\u7406\u3001\u62a5\u544a\u53d1\u5230\u54ea\u91cc\u3002\u5ba2\u6237\u7aef\u8fd9\u4e00\u6bb5\u624d\u662f\u670d\u52a1\u5668\u5730\u5740\u3001\u7aef\u53e3\u3001\u52a0\u5bc6\u65b9\u5f0f\u8fd9\u4e9b\u5728\u7535\u8111\u6216\u624b\u673a\u4e0a\u586b\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u4e09\u6bb5\u4e4b\u95f4\u6709\u4e25\u683c\u7684\u4f9d\u8d56\u5173\u7cfb\uff1aMX \u6ca1\u751f\u6548\uff0c\u5ba2\u6237\u7aef\u914d\u5f97\u518d\u51c6\u4e5f\u6536\u4e0d\u5230\u4fe1\uff1bSPF \u5199\u9519\u4e00\u4e2a\u53c2\u6570\uff0c\u6b63\u6587\u6253\u78e8\u5f97\u518d\u597d\u4e5f\u4f1a\u88ab\u5224\u4e3a\u672a\u8ba4\u8bc1\u3002\u57df\u540d\u89e3\u6790\uff08DNS\uff08\u57df\u540d\u7cfb\u7edf\uff09\uff09\u7684\u751f\u6548\u65f6\u95f4\u7531 TTL \u51b3\u5b9a\uff0c\u4fee\u6539\u671f\u95f4\u628a TTL \u4e34\u65f6\u964d\u5230 300 \u79d2\uff0c\u53ef\u4ee5\u628a\u7b49\u5f85\u538b\u5230\u4e94\u5206\u949f\u4e0a\u4e0b\uff0c\u6539\u5b8c\u518d\u8c03\u56de 3600 \u79d2\u3002\u90ae\u4ef6\u961f\u5217\u548c\u7f51\u7ad9\u5171\u7528\u540c\u4e00\u53f0\u670d\u52a1\u5668\u7684\u8d44\u6e90\uff0c\u961f\u5217\u5806\u79ef\u65f6\u524d\u53f0\u4e5f\u4f1a\u8ddf\u7740\u53d8\u6162\uff0c\u8fd9\u7c7b\u60c5\u51b5\u53ef\u4ee5\u5bf9\u7167 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/cpu-load-troubleshooting-top-pidstat\/\">\u670d\u52a1\u5668\u8d44\u6e90\u4e0e\u961f\u5217\u6392\u67e5<\/a> \u7684\u601d\u8def\u4e00\u8d77\u770b\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-email-chain.webp\" alt=\"\u4f01\u4e1a\u90ae\u7bb1\u4e09\u6bb5\u94fe\u8def\u7684\u7ed3\u6784\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>\u4e8c\u3001\u914d\u7f6e\u987a\u5e8f\uff1a\u5148\u670d\u52a1\u3001\u518d\u8bb0\u5f55\u3001\u540e\u5ba2\u6237\u7aef<\/h2>\n<p>\u987a\u5e8f\u9519\u4e86\uff0c\u6700\u5e38\u89c1\u7684\u7ed3\u679c\u662f\u8bb0\u5f55\u770b\u8d77\u6765\u90fd\u5bf9\uff0c\u4f46\u5c31\u662f\u4e0d\u751f\u6548\u3002\u6b63\u786e\u505a\u6cd5\u662f\u5148\u5728\u4f01\u4e1a\u90ae\u7bb1\u540e\u53f0\u62ff\u5230\u670d\u52a1\u5668\u53c2\u6570\u548c\u7b7e\u540d\u5bc6\u94a5\uff0c\u518d\u6539\u57df\u540d\u8bb0\u5f55\uff0c\u6700\u540e\u624d\u914d\u7f6e\u7535\u8111\u548c\u624b\u673a\u4e0a\u7684\u5ba2\u6237\u7aef\u3002<\/p>\n<ul>\n<li>\u5f00\u901a\u90ae\u7bb1\u65f6\u5148\u8bb0\u4e0b\u670d\u52a1\u7aef\u53c2\u6570\uff1aIMAP \u4e0e SMTP \u670d\u52a1\u5668\u901a\u5e38\u5f62\u5982 mail.example.com\uff0cSMTP \u8d70 465 \u7aef\u53e3\uff08\u52a0\u5bc6\u76f4\u8fde\uff09\u6216 587 \u7aef\u53e3\uff08STARTTLS\uff09\uff0c\u8fd9\u4e9b\u503c\u4ee5\u670d\u52a1\u5546\u540e\u53f0\u4e3a\u51c6\uff0c\u4e0d\u8981\u7167\u6284\u4e09\u5e74\u524d\u7684\u6559\u7a0b\u3002<\/li>\n<li>\u5199 MX \u8bb0\u5f55\uff1a\u4e3b\u673a\u8bb0\u5f55\u586b @ \u6216\u7559\u7a7a\uff0c\u8bb0\u5f55\u503c\u6307\u5411\u670d\u52a1\u5546\u7ed9\u51fa\u7684\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u4f18\u5148\u7ea7\u586b 10\uff1b\u5982\u679c\u670d\u52a1\u5546\u7ed9\u4e24\u6761\uff0c\u53e6\u4e00\u6761\u586b 20\uff0c\u6570\u5b57\u5c0f\u7684\u5148\u6295\u9012\u3002<\/li>\n<li>\u914d SPF \u4e0e DKIM\uff1aSPF \u5199\u6210 v=spf1 include:spf.\u670d\u52a1\u5546\u57df\u540d -all\uff1bDKIM \u516c\u94a5\u653e\u5728 selector._domainkey \u5b50\u57df\u4e0b\uff0c\u5bc6\u94a5\u9009 2048 \u4f4d\uff0c1024 \u4f4d\u53ea\u4f5c\u4e3a\u517c\u5bb9\u5907\u9009\u3002<\/li>\n<li>\u6700\u540e\u8865 DMARC\uff1a\u5148\u5199 v=DMARC1; p=none; rua=mailto:dmarc@example.com\uff0c\u6536\u4e24\u5468\u62a5\u544a\u786e\u8ba4\u5bf9\u9f50\u7387\uff0c\u518d\u6536\u7d27\u5230 quarantine\u3002<\/li>\n<\/ul>\n<p>\u914d\u7f6e\u5b8c\u4e0d\u8981\u9760\u65f6\u95f4\u78b0\u8fd0\u6c14\uff0c\u76f4\u63a5\u7528\u547d\u4ee4\u9a8c\u8bc1\u3002MX \u7528 <code>dig +short MX example.com<\/code> \u770b\u662f\u5426\u8fd4\u56de\u670d\u52a1\u5546\u5730\u5740\uff1bSPF \u7528 <code>dig +short TXT example.com<\/code> \u786e\u8ba4\u53ea\u6709\u4e00\u6761\u4ee5 v=spf1 \u5f00\u5934\u7684\u8bb0\u5f55\uff1bDKIM \u7528 <code>dig +short TXT 2048._domainkey.example.com<\/code> \u80fd\u628a\u516c\u94a5\u7247\u6bb5\u67e5\u51fa\u6765\uff1bDMARC \u67e5 <code>dig +short TXT _dmarc.example.com<\/code>\u3002\u56db\u6761\u90fd\u8fd4\u56de\u9884\u671f\u503c\uff0c\u518d\u53bb\u52a8\u5ba2\u6237\u7aef\u3002<\/p>\n<p>\u5ba2\u6237\u7aef\u8fd9\u4e00\u6bb5\u6700\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u662f\u53d1\u4fe1\u8eab\u4efd\u548c\u6536\u4fe1\u8eab\u4efd\u4e0d\u4e00\u81f4\u3002\u7528 info@ \u6536\u4fe1\u3001\u7528 noreply@ \u7fa4\u53d1\u65f6\uff0cSMTP \u8ba4\u8bc1\u8d26\u53f7\u5fc5\u987b\u662f\u771f\u5b9e\u5b58\u5728\u7684\u90ae\u7bb1\uff0c\u5426\u5219\u670d\u52a1\u5668\u4f1a\u4ee5 535 \u8ba4\u8bc1\u5931\u8d25\u62d2\u6389\u3002\u52a0\u5bc6\u65b9\u5f0f\u4e5f\u8981\u548c\u7aef\u53e3\u914d\u5bf9\uff1a465 \u7aef\u53e3\u914d SSL\uff08\u5b89\u5168\u4f20\u8f93\u534f\u8bae\uff09\u76f4\u8fde\uff0c587 \u7aef\u53e3\u914d STARTTLS\uff0c\u4e24\u8005\u6df7\u7528\u4f1a\u8868\u73b0\u6210\u80fd\u767b\u5f55\u3001\u53d1\u4e0d\u51fa\u53bb\u3002<\/p>\n<p>\u5982\u679c\u4f01\u4e1a\u540c\u65f6\u7528\u5efa\u7ad9\u8868\u5355\u6216\u5546\u57ce\u63d2\u4ef6\u53d1\u901a\u77e5\u90ae\u4ef6\uff0c\u8fd9\u4e9b\u90ae\u4ef6\u4e5f\u8d70\u540c\u4e00\u5957\u8ba4\u8bc1\u94fe\u3002\u8868\u5355\u63d2\u4ef6\u9ed8\u8ba4\u7528 PHP mail() \u53d1\u4fe1\uff0c\u5728\u5171\u4eab\u51fa\u53e3\u4e0a\u5f88\u5bb9\u6613\u88ab\u5224\u6210\u4f2a\u9020\u53d1\u4ef6\u4eba\uff0c\u6539\u6210 SMTP \u8ba4\u8bc1\u53d1\u4fe1\u66f4\u7a33\uff0c\u5177\u4f53\u8bbe\u7f6e\u53ef\u4ee5\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/wordpress\/\">WordPress \u5efa\u7ad9\u4e0e\u90ae\u4ef6\u63d2\u4ef6\u914d\u7f6e<\/a> \u91cc\u7684\u505a\u6cd5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-email-auth-compare.webp\" alt=\"\u8ba4\u8bc1\u8bb0\u5f55\u5b8c\u6574\u4e0e\u7f3a\u5931\u7684\u5bf9\u6bd4\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>\u4e09\u3001\u9000\u4fe1\u6392\u67e5\uff1a\u6309\u8fd4\u56de\u7801\u9010\u5c42\u5f80\u4e0b\u8d70<\/h2>\n<p>\u9000\u4fe1\u4e0d\u662f\u4e00\u79cd\u95ee\u9898\uff0c\u800c\u662f\u4e00\u7c7b\u7ed3\u679c\u3002\u62ff\u5230\u9000\u4fe1\u5148\u770b\u4e09\u6837\u4e1c\u897f\uff1a\u8fd4\u56de\u7801\u3001\u88ab\u62d2\u7684\u90a3\u884c\u82f1\u6587\u8bf4\u660e\u3001\u4ee5\u53ca\u9000\u4fe1\u65f6\u95f4\u4e0e\u5f53\u65f6\u7684\u53d1\u9001\u91cf\u3002\u6309\u4e0b\u9762\u7684\u987a\u5e8f\u67e5\uff0c\u57fa\u672c\u4e0d\u4f1a\u7ed5\u5708\u3002<\/p>\n<ul>\n<li>550 5.1.1 \u8868\u793a\u6536\u4ef6\u4eba\u4e0d\u5b58\u5728\u3002\u8fd9\u7c7b\u9000\u4fe1\u548c\u4f60\u7684\u914d\u7f6e\u65e0\u5173\uff0c\u6e05\u7406\u540d\u5355\u5373\u53ef\uff1b\u5982\u679c\u540c\u4e00\u57df\u540d\u7684\u5730\u5740\u6574\u6279 5.1.1\uff0c\u5148\u786e\u8ba4\u5bf9\u65b9\u57df\u540d\u7684 MX \u662f\u5426\u8fd8\u5728\u3002<\/li>\n<li>550 5.7.1 \u4e0e 554 5.7.1 \u5c5e\u4e8e\u7b56\u7565\u62d2\u7edd\uff0c\u539f\u56e0\u96c6\u4e2d\u5728 SPF\/DKIM \u672a\u901a\u8fc7\u3001\u53d1\u4fe1 IP \u8fdb\u4e86\u9ed1\u540d\u5355\u3001\u6b63\u6587\u547d\u4e2d\u5783\u573e\u90ae\u4ef6\u89c4\u5219\u3002\u53bb Gmail \u6253\u5f00\u201c\u663e\u793a\u539f\u59cb\u90ae\u4ef6\u201d\uff0c\u770b Authentication-Results \u91cc\u7684 spf\u3001dkim\u3001dmarc \u4e09\u9879\u662f\u5426\u5168\u90e8 pass\u3002<\/li>\n<li>421 4.7.0 \u662f\u4e34\u65f6\u6027\u9650\u6d41\uff0c\u591a\u51fa\u73b0\u5728\u77ed\u65f6\u95f4\u96c6\u4e2d\u7fa4\u53d1\u3002\u865a\u62df\u4e3b\u673a\u6309\u5c0f\u65f6\u8ba1\u53d1\u4fe1\u989d\u5ea6\uff0c\u5e38\u89c1\u5957\u9910\u5728 200 \u81f3 500 \u5c01\/\u5c0f\u65f6\uff0c\u8d85\u51fa\u540e\u90ae\u4ef6\u88ab\u9000\u56de\u961f\u5217\uff0c\u4e00\u5c0f\u65f6\u540e\u81ea\u52a8\u91cd\u8bd5\u3002<\/li>\n<li>552 5.3.4 \u6307\u5355\u5c01\u4f53\u79ef\u8d85\u9650\u3002Gmail \u4e0a\u9650 25MB\uff0c\u9644\u4ef6\u7ecf Base64 \u7f16\u7801\u540e\u4f53\u79ef\u6da8\u7ea6 33%\uff0c20MB \u7684\u9644\u4ef6\u5b9e\u9645\u4f20\u8f93\u7ea6 27MB\uff0c\u540c\u65f6\u5360\u7528\u51fa\u53e3\u5e26\u5bbd\uff08\u7f51\u7edc\u51fa\u53e3\u901f\u7387\uff09\uff0c\u5fc5\u7136\u88ab\u62d2\u3002<\/li>\n<\/ul>\n<p>\u8fd4\u56de\u7801\u53ea\u80fd\u5b9a\u4f4d\u5230\u54ea\u4e00\u5c42\uff0c\u5b9a\u4f4d\u4e0d\u5230\u4e3a\u4ec0\u4e48\u3002\u7b2c\u4e8c\u5c42\u8981\u67e5\u57df\u540d\u4e0e IP \u7684\u4fe1\u8a89\uff1a\u7528 Spamhaus\u3001Barracuda \u7684\u516c\u5f00\u67e5\u8be2\u9875\u786e\u8ba4\u53d1\u4fe1 IP \u662f\u5426\u5728\u540d\u5355\u4e2d\uff0c\u518d\u6267\u884c\u4e00\u6b21 <code>dig +short TXT \u4f60\u7684\u57df\u540d<\/code> \u770b SPF \u662f\u5426\u91cd\u590d\u3002\u591a\u6761 SPF \u8bb0\u5f55\u4f1a\u76f4\u63a5\u89e6\u53d1 permerror\uff0c\u6536\u4ef6\u65b9\u4e00\u5f8b\u6309\u672a\u8ba4\u8bc1\u5904\u7406\uff0c\u8fd9\u662f\u4e2d\u5c0f\u4f01\u4e1a\u6700\u5e38\u8e29\u7684\u5751\u3002\u4ee5 Hostease \u865a\u62df\u4e3b\u673a\u4e3a\u4f8b\uff0c\u63a7\u5236\u9762\u677f\u7684\u90ae\u4ef6\u914d\u989d\u9875\u80fd\u770b\u5230\u5f53\u524d\u5c0f\u65f6\u7684\u53d1\u9001\u91cf\uff0c\u5177\u4f53\u6570\u503c\u4ee5\u5957\u9910\u8bf4\u660e\u4e3a\u51c6\u3002<\/p>\n<p>\u7b2c\u4e09\u5c42\u624d\u662f\u5185\u5bb9\u3002\u7fa4\u53d1\u540c\u4e00\u5957\u6a21\u677f\u3001\u6b63\u6587\u91cc\u585e\u4e09\u56db\u4e2a\u77ed\u94fe\u3001\u56fe\u7247\u591a\u6587\u5b57\u5c11\u3001\u9644\u4ef6\u662f exe \u6216\u538b\u7f29\u5305\uff0c\u90fd\u4f1a\u62c9\u9ad8\u5783\u573e\u90ae\u4ef6\u8bc4\u5206\u3002\u628a\u6d4b\u8bd5\u90ae\u4ef6\u5355\u72ec\u53d1\u7ed9 Gmail\u3001Outlook\u3001QQ \u90ae\u7bb1\u5404\u4e00\u4e2a\u8d26\u53f7\uff0c\u770b\u662f\u5426\u8fdb\u5783\u573e\u7bb1\uff0c\u6bd4\u53cd\u590d\u6539\u6b63\u6587\u6709\u6548\u5f97\u591a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/10\/shared-hosting-email-bounce-order.webp\" alt=\"\u9000\u4fe1\u6392\u67e5\u987a\u5e8f\u7684\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>\u56db\u3001\u4e00\u4e2a\u5916\u8d38\u516c\u53f8\u7684\u5b9e\u9645\u6392\u67e5\u8fc7\u7a0b<\/h2>\n<p>\u53bb\u5e74\u6211\u4eec\u534f\u52a9\u4e00\u5bb6\u505a\u6c7d\u8f66\u914d\u4ef6\u7684\u8d38\u6613\u516c\u53f8\u6392\u67e5\u4f01\u4e1a\u90ae\u7bb1\uff0c20 \u4e2a\u8d26\u53f7\uff0c\u65e5\u5747\u53d1\u9001 260 \u5c01\u62a5\u4ef7\u4e0e\u8ddf\u8fdb\u90ae\u4ef6\uff0c\u9000\u4fe1\u7387 32%\u3002\u7b2c\u4e00\u8f6e\u68c0\u67e5\u53d1\u73b0\u57df\u540d\u4e0b\u6709\u4e24\u6761 SPF \u8bb0\u5f55\uff1a\u4e00\u6761\u662f\u65e9\u671f\u670d\u52a1\u5546\u7559\u4e0b\u7684 v=spf1 include:old-mail.com ~all\uff0c\u4e00\u6761\u662f\u65b0\u670d\u52a1\u5546\u7684\uff0c\u4e24\u6761\u5e76\u5b58\u76f4\u63a5\u5bfc\u81f4 permerror\u3002<\/p>\n<p>\u628a\u4e24\u6761\u5408\u5e76\u6210\u4e00\u6761\u540e\u7b49\u4e86 40 \u5206\u949f\uff08TTL \u63d0\u524d\u964d\u5230\u4e86 300 \u79d2\uff09\uff0cGmail \u7684 Authentication-Results \u4ece spf=permerror \u53d8\u6210 spf=pass\uff0c48 \u5c0f\u65f6\u5185\u9000\u4fe1\u7387\u964d\u5230 3%\u3002\u5269\u4e0b 3% \u5168\u90e8\u662f 421 4.7.0\uff0c\u65e5\u5fd7\u663e\u793a\u9500\u552e\u5728\u4e0a\u5348 9 \u70b9\u5230 10 \u70b9\u96c6\u4e2d\u53d1\u51fa 260 \u5c01\uff0c\u8d85\u8fc7\u4e86\u8be5\u5957\u9910 200 \u5c01\/\u5c0f\u65f6\u7684\u4e0a\u9650\u3002<\/p>\n<p>\u6539\u6210\u6bcf 20 \u5206\u949f\u53d1 50 \u5c01\u3001\u5355\u65e5\u63a7\u5236\u5728 800 \u5c01\u4ee5\u5185\u4e4b\u540e\uff0c421 \u5f7b\u5e95\u6d88\u5931\u3002\u8fd9\u4e2a\u6848\u4f8b\u91cc\u6ca1\u6709\u4efb\u4f55\u4e00\u5904\u9700\u8981\u6362\u670d\u52a1\u5668\uff0c\u95ee\u9898\u5168\u90e8\u51fa\u5728\u8bb0\u5f55\u91cd\u590d\u548c\u53d1\u9001\u8282\u594f\u4e0a\u3002\u5b83\u4e5f\u8bf4\u660e\u4e00\u4ef6\u4e8b\uff1a\u9000\u4fe1\u7387\u5f02\u5e38\u65f6\u5148\u67e5\u914d\u7f6e\u4e0e\u914d\u989d\uff0c\u6bd4\u5347\u7ea7\u5957\u9910\u66f4\u7701\u94b1\u3002<\/p>\n<h2>\u4e94\u3001\u4e0a\u7ebf\u524d\u7684\u81ea\u67e5\u6e05\u5355<\/h2>\n<p>\u914d\u7f6e\u5b8c\u6210\u540e\uff0c\u7528\u4e0b\u9762\u4e94\u9879\u505a\u4e00\u6b21\u5b8c\u6574\u9a8c\u8bc1\uff0c\u5168\u90e8\u901a\u8fc7\u518d\u5f00\u59cb\u7fa4\u53d1\u3002<\/p>\n<ul>\n<li>MX \u53ea\u4fdd\u7559\u670d\u52a1\u5546\u7ed9\u51fa\u7684\u8bb0\u5f55\uff0c\u65e7\u90ae\u4ef6\u670d\u52a1\u5546\u7684\u8bb0\u5f55\u5220\u5e72\u51c0\uff0c\u5426\u5219\u90e8\u5206\u90ae\u4ef6\u4ecd\u4f1a\u88ab\u6295\u9012\u5230\u5df2\u505c\u7528\u7684\u670d\u52a1\u5668\u3002<\/li>\n<li>SPF \u53ea\u7559\u4e00\u6761\uff0c\u7ed3\u5c3e\u7528 -all\uff08\u4e25\u683c\uff09\u6216 ~all\uff08\u5bbd\u677e\uff09\uff0c\u4e0d\u8981\u5199 ?all\uff1binclude \u6b21\u6570\u63a7\u5236\u5728 10 \u6b21\u67e5\u8be2\u4ee5\u5185\uff0c\u8d85\u8fc7\u4f1a\u89e6\u53d1 lookup \u8d85\u9650\u3002<\/li>\n<li>DKIM \u9009\u62e9\u5668\u4e0e\u540e\u53f0\u5b9e\u9645\u7b7e\u540d\u4e00\u81f4\uff0c\u5bc6\u94a5 2048 \u4f4d\uff0c\u79c1\u94a5\u7559\u5728\u670d\u52a1\u5546\u4fa7\uff0c\u4e0d\u8981\u4e0b\u8f7d\u5230\u672c\u5730\u7535\u8111\u957f\u671f\u4fdd\u5b58\u3002<\/li>\n<li>DMARC \u5148 p=none \u6536\u96c6\u62a5\u544a\uff0c\u786e\u8ba4 SPF \u4e0e DKIM \u5bf9\u9f50\u7387\u8d85\u8fc7 95%\uff0c\u518d\u5207\u5230 quarantine \u6216 reject\u3002<\/li>\n<li>\u53d1\u9001\u8282\u594f\u6309\u5c0f\u65f6\u914d\u989d\u62c6\u6279\uff0c\u9996\u5c01\u6d4b\u8bd5\u8986\u76d6 Gmail\u3001Outlook\u3001QQ \u4e09\u4e2a\u57df\uff0c\u786e\u8ba4\u4e0d\u8fdb\u5783\u573e\u7bb1\u540e\u518d\u653e\u91cf\u3002<\/li>\n<\/ul>\n<p>\u5982\u679c\u4e1a\u52a1\u91cf\u6da8\u5230\u6bcf\u5929\u51e0\u5343\u5c01\uff0c\u6216\u8005\u9700\u8981\u72ec\u7acb IP \u7ef4\u62a4\u53d1\u4fe1\u58f0\u8a89\uff0c\u865a\u62df\u4e3b\u673a\u7684\u5171\u4eab\u51fa\u53e3\u5c31\u4f1a\u53d8\u6210\u74f6\u9888\u3002\u8fd9\u79cd\u60c5\u51b5\u53ef\u4ee5\u8003\u8651\u8fc1\u79fb\u5230 <a href=\"https:\/\/cn.hostease.com\/blog\/vps\/\">VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09<\/a> \u6216[\u72ec\u7acb\u670d\u52a1\u5668](https:\/\/cn.hostease.com\/dedicated-server\/)\uff0c\u628a\u53d1\u4fe1 IP \u4e0e\u7f51\u7ad9\u8d44\u6e90\u62c6\u5f00\uff0c\u907f\u514d\u4e00\u6b21\u7fa4\u53d1\u5f71\u54cd\u6574\u7ad9\u8bbf\u95ee\u3002\u9009\u578b\u65f6\u4f18\u5148\u786e\u8ba4\u5355\u5c0f\u65f6\u53d1\u4fe1\u4e0a\u9650\u3001\u662f\u5426\u652f\u6301\u72ec\u7acb IP\u3001\u63a7\u5236\u9762\u677f\u80fd\u5426\u67e5\u770b\u90ae\u4ef6\u961f\u5217\uff0c\u8fd9\u4e09\u9879\u76f4\u63a5\u51b3\u5b9a\u540e\u7eed\u6392\u969c\u6210\u672c\u3002<\/p>\n<h2>\u516d\u3001\u628a\u987a\u5e8f\u56fa\u5b9a\u4e0b\u6765<\/h2>\n<p>\u4f01\u4e1a\u90ae\u7bb1\u7684\u914d\u7f6e\u4e0e\u6392\u969c\uff0c\u672c\u8d28\u4e0a\u662f\u4e00\u5957\u56fa\u5b9a\u987a\u5e8f\uff1a\u5148\u786e\u8ba4\u670d\u52a1\u7aef\u53c2\u6570\uff0c\u518d\u5199 MX \u4e0e\u8ba4\u8bc1\u8bb0\u5f55\uff0c\u6700\u540e\u914d\u5ba2\u6237\u7aef\uff1b\u9000\u4fe1\u5148\u8bfb\u8fd4\u56de\u7801\uff0c\u518d\u67e5\u8ba4\u8bc1\u94fe\uff0c\u7136\u540e\u770b IP 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