{"id":34485,"date":"2026-11-12T18:00:00","date_gmt":"2026-11-12T10:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=34485"},"modified":"2026-11-02T13:58:16","modified_gmt":"2026-11-02T05:58:16","slug":"caa-ca-ssl","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/caa-ca-ssl\/","title":{"rendered":"\u57df\u540d CAA \u8bb0\u5f55\u914d\u7f6e\uff1a\u53ea\u5141\u8bb8\u6307\u5b9a CA \u4e3a\u7f51\u7ad9\u7b7e\u53d1 SSL \u8bc1\u4e66"},"content":{"rendered":"<p>\u7f51\u7ad9\u4e00\u76f4\u5728\u6b63\u5e38\u8bbf\u95ee\uff0c\u67d0\u5929\u5374\u63a5\u5230\u7528\u6237\u53cd\u9988\u6d4f\u89c8\u5668\u5f39\u51fa\u8bc1\u4e66\u544a\u8b66\uff0c\u6392\u67e5\u540e\u53d1\u73b0\u662f\u57df\u540d\u88ab\u53e6\u4e00\u4e2a\u8bc1\u4e66\u9881\u53d1\u673a\u6784\uff08CA\uff0cCertificate Authority\uff09\u8bef\u7b7e\u4e86\u8bc1\u4e66\u2014\u2014\u8fd9\u7c7b\u95ee\u9898\u9047\u5230\u7684\u6982\u7387\u4e0d\u9ad8\uff0c\u4f46\u4e00\u65e6\u53d1\u751f\u5904\u7406\u8d77\u6765\u975e\u5e38\u88ab\u52a8\u3002CAA\uff08Certificate Authority Authorization\uff0c\u8bc1\u4e66\u9881\u53d1\u673a\u6784\u6388\u6743\uff09\u8bb0\u5f55\u5c31\u662f\u7528\u6765\u89e3\u51b3\u8fd9\u4e2a\u9690\u60a3\u7684\uff1a\u5b83\u5728 DNS\uff08Domain Name System\uff0c\u57df\u540d\u89e3\u6790\u7cfb\u7edf\uff09\u91cc\u58f0\u660e&#8221;\u53ea\u5141\u8bb8\u54ea\u4e9b CA \u4e3a\u6211\u7684\u57df\u540d\u7b7e\u53d1 SSL\uff08Secure Sockets Layer\uff0c\u5b89\u5168\u4f20\u8f93\u534f\u8bae\uff09\u8bc1\u4e66&#8221;\uff0c\u4ece\u6e90\u5934\u4e0a\u6536\u7a84\u7b7e\u53d1\u6743\u9650\u3002\u8fd9\u7bc7\u6587\u7ae0\u8bb2\u6e05 CAA \u8bb0\u5f55\u7684\u4e09\u4e2a\u6807\u7b7e\u600e\u4e48\u7528\u3001\u600e\u4e48\u5728 DNS \u5e73\u53f0\u914d\u7f6e\u3001\u600e\u4e48\u9a8c\u8bc1\u751f\u6548\uff0c\u4ee5\u53ca\u7eed\u671f\u5931\u8d25\u600e\u4e48\u6392\u67e5\uff0c\u770b\u5b8c\u5c31\u80fd\u76f4\u63a5\u7ed9\u751f\u4ea7\u57df\u540d\u52a0\u4e0a\u8fd9\u9053\u9632\u7ebf\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/11\/caa-ca-ssl-cover.webp\" alt=\"CAA \u8bb0\u5f55\u6838\u5fc3\u6982\u5ff5\u5c01\u9762\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>CAA \u8bb0\u5f55\u662f\u600e\u4e48\u62e6\u4f4f&#8221;\u4e0d\u8be5\u7b7e\u7684\u8bc1\u4e66&#8221;\u7684<\/h2>\n<p>CAA \u8bb0\u5f55\u672c\u8d28\u4e0a\u662f\u4e00\u6761\u666e\u901a\u7684 DNS \u8bb0\u5f55\uff0c\u4f46\u5b83\u627f\u8f7d\u7684\u662f\u4e00\u6761\u7b7e\u53d1\u7b56\u7565\u58f0\u660e\u3002\u6309\u7167 RFC 8659 \u7684\u7ea6\u5b9a\uff0c\u8bc1\u4e66\u9881\u53d1\u673a\u6784\u5728\u6536\u5230\u7b7e\u53d1\u8bf7\u6c42\u540e\uff0c\u5fc5\u987b\u5148\u67e5\u8be2\u76ee\u6807\u57df\u540d\u7684 CAA \u8bb0\u5f55\uff1a\u5982\u679c\u8bb0\u5f55\u91cc\u58f0\u660e\u7684\u5141\u8bb8\u5217\u8868\u91cc\u6ca1\u6709\u81ea\u5df1\uff0c\u5c31\u5fc5\u987b\u62d2\u7edd\u7b7e\u53d1\u5e76\u628a\u8fd9\u6b21\u8bf7\u6c42\u8bb0\u5f55\u5728\u5ba1\u8ba1\u65e5\u5fd7\u91cc\uff1b\u5982\u679c\u57df\u540d\u6ca1\u6709\u914d\u7f6e\u4efb\u4f55 CAA \u8bb0\u5f55\uff0c\u5219\u9ed8\u8ba4\u4efb\u4f55 CA \u90fd\u53ef\u4ee5\u7b7e\u53d1\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cCAA \u628a&#8221;\u8c01\u80fd\u7ed9\u6211\u7684\u57df\u540d\u53d1\u8bc1\u4e66&#8221;\u8fd9\u4e2a\u51b3\u5b9a\u6743\u6536\u56de\u5230\u57df\u540d\u6240\u6709\u8005\u624b\u91cc\u3002<\/p>\n<p>\u4e00\u6761\u5b8c\u6574\u7684 CAA \u8bb0\u5f55\u7531\u4e09\u4e2a\u5b57\u6bb5\u7ec4\u6210\uff1a\u6807\u5fd7\u4f4d\uff08flags\uff0c\u901a\u5e38\u662f 0\uff09\u3001\u6807\u7b7e\uff08tag\uff09\u548c\u503c\uff08value\uff09\u3002\u771f\u6b63\u5e72\u6d3b\u7684\u662f\u6807\u7b7e\uff0c\u5171\u6709\u4e09\u4e2a\uff1a<\/p>\n<ul>\n<li><code>issue<\/code>\uff1a\u58f0\u660e\u5141\u8bb8\u4e3a\u8be5\u57df\u540d\u7b7e\u53d1\u666e\u901a\u8bc1\u4e66\u7684 CA \u57df\u540d<\/li>\n<li><code>issuewild<\/code>\uff1a\u5355\u72ec\u63a7\u5236\u901a\u914d\u7b26\u8bc1\u4e66\uff08\u5982 <code>*.example.com<\/code>\uff09\u7684\u7b7e\u53d1\u6743\u9650<\/li>\n<li><code>iodef<\/code>\uff1a\u6307\u5b9a\u8fdd\u89c4\u7b7e\u53d1\u884c\u4e3a\u7684\u62a5\u544a\u63a5\u6536\u5730\u5740\uff0c\u65b9\u4fbf\u7b2c\u4e00\u65f6\u95f4\u53d1\u73b0\u5f02\u5e38<\/li>\n<\/ul>\n<p>\u8fd8\u6709\u4e00\u4e2a\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u7ec6\u8282\u662f\u7ee7\u627f\u89c4\u5219\uff1aCAA \u8bb0\u5f55\u4f1a\u6cbf DNS \u6811\u5411\u4e0b\u7ee7\u627f\u3002<code>sub.example.com<\/code> \u6ca1\u6709\u81ea\u5df1\u7684 CAA \u8bb0\u5f55\u65f6\uff0c\u7b7e\u53d1\u6cbf\u7528 <code>example.com<\/code> \u7684\u7b56\u7565\uff1b\u4e00\u65e6\u5b50\u57df\u914d\u7f6e\u4e86\u81ea\u5df1\u7684\u8bb0\u5f55\uff0c\u5c31\u5b8c\u5168\u8986\u76d6\u7236\u57df\u3002<\/p>\n<h2>\u914d\u7f6e\u524d\u7684\u51c6\u5907\uff1a\u786e\u8ba4\u4f60\u7684 CA \u57df\u540d<\/h2>\n<p>\u52a8\u624b\u914d\u7f6e\u4e4b\u524d\uff0c\u5148\u786e\u8ba4\u4e00\u4ef6\u6700\u5173\u952e\u7684\u4e8b\uff1a\u5f53\u524d\u8bc1\u4e66\u662f\u7531\u54ea\u5bb6 CA \u7b7e\u53d1\u7684\uff0c\u4ee5\u53ca\u8fd9\u5bb6 CA \u5728 CAA \u4f53\u7cfb\u91cc\u767b\u8bb0\u7684\u57df\u540d\u3002\u5199\u9519 CA \u57df\u540d\u662f CAA \u914d\u7f6e\u4e8b\u6545\u7684\u5934\u53f7\u6765\u6e90\u2014\u2014\u8bb0\u5f55\u4e00\u751f\u6548\uff0c\u4e0b\u4e00\u6b21\u8bc1\u4e66\u7eed\u671f\u5c31\u4f1a\u88ab\u76f4\u63a5\u62d2\u7edd\uff0c\u7f51\u7ad9\u5728\u65e0\u4eba\u5bdf\u89c9\u7684\u60c5\u51b5\u4e0b\u8bc1\u4e66\u8fc7\u671f\u3002<\/p>\n<p>\u5404\u4e3b\u6d41 CA \u7684\u767b\u8bb0\u57df\u540d\uff1a\u514d\u8d39\u7684 Let&#8217;s Encrypt \u4f7f\u7528 <code>letsencrypt.org<\/code>\uff1bDigiCert \u4f7f\u7528 <code>digicert.com<\/code>\uff1bSectigo \u4f7f\u7528 <code>sectigo.com<\/code>\uff1bGlobalSign \u4f7f\u7528 <code>globalsign.com<\/code>\u3002\u5982\u679c\u4e0d\u786e\u5b9a\u8bc1\u4e66\u6765\u81ea\u54ea\u5bb6\uff0c\u53ef\u4ee5\u5728\u6d4f\u89c8\u5668\u91cc\u70b9\u5f00\u7ad9\u70b9\u8bc1\u4e66\u8be6\u60c5\u67e5\u770b\u7b7e\u53d1\u673a\u6784\uff0c\u6216\u8005\u5728\u670d\u52a1\u5668\u4e0a\u7528 OpenSSL \u547d\u4ee4\u67e5\u770b\uff1a<\/p>\n<pre><code class=\"language-bash\"># \u67e5\u770b\u5f53\u524d\u7ad9\u70b9\u8bc1\u4e66\u7684\u7b7e\u53d1\u673a\u6784\uff08\u628a\u57df\u540d\u6362\u6210\u81ea\u5df1\u7684\uff09\nopenssl s_client -connect example.com:443 -servername example.com 2&gt;\/dev\/null | openssl x509 -noout -issuer\n\n# \u7528 dig \u67e5\u8be2\u57df\u540d\u73b0\u6709\u7684 CAA \u8bb0\u5f55\uff08\u53ef\u80fd\u4e3a\u7a7a\uff0c\u4e3a\u7a7a\u8868\u793a\u5c1a\u672a\u914d\u7f6e\uff09\ndig example.com CAA +short\n<\/code><\/pre>\n<p>\u53e6\u5916\u8981\u63d0\u524d\u60f3\u6e05\u695a\u4e24\u4e2a\u95ee\u9898\uff1a\u4e00\u662f\u662f\u5426\u4f7f\u7528\u6216\u8ba1\u5212\u4f7f\u7528\u901a\u914d\u7b26\u8bc1\u4e66\uff0c\u5982\u679c\u7b54\u6848\u662f\u80af\u5b9a\u7684\uff0c\u5c31\u5fc5\u987b\u540c\u65f6\u5199 <code>issuewild<\/code>\uff0c\u5426\u5219\u901a\u914d\u7b26\u7eed\u671f\u4f1a\u88ab\u62e6\u4e0b\uff1b\u4e8c\u662f\u662f\u5426\u6258\u7ba1\u5728<a href=\"https:\/\/cn.hostease.com\/shared-hosting.html\">\u5171\u4eab\u4e3b\u673a<\/a>\u4e0a\u7531\u4e3b\u673a\u5546\u7edf\u4e00\u7ba1\u7406\u8bc1\u4e66\u2014\u2014\u8fd9\u79cd\u60c5\u51b5\u4e0b\u8981\u5148\u95ee\u6e05\u4e3b\u673a\u5546\u7528\u7684\u662f\u54ea\u5bb6 CA\uff0c\u518d\u51b3\u5b9a\u5141\u8bb8\u5217\u8868\uff0c\u907f\u514d\u5355\u65b9\u9762\u6536\u7d27\u540e\u628a\u4e3b\u673a\u5546\u7684\u81ea\u52a8\u7b7e\u53d1\u6d41\u7a0b\u5361\u6b7b\u3002\u90e8\u7f72\u5f62\u6001\u4e0d\u540c\uff0c\u8bc1\u4e66\u7ba1\u7406\u65b9\u5f0f\u4e5f\u4e0d\u540c\uff0c\u53ef\u4ee5\u53c2\u8003\u8fd9\u7bc7<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/shared-hosting-ssl-deployment-https-301\/\">\u865a\u62df\u4e3b\u673a SSL \u8bc1\u4e66\u90e8\u7f72\u540e\u5f3a\u5236 HTTPS\uff1a301 \u8df3\u8f6c\u4e0e\u6df7\u5408\u5185\u5bb9\u4fee\u590d<\/a>\u63d0\u524d\u4e86\u89e3\u3002<\/p>\n<h2>\u4e09\u79cd\u573a\u666f\u4e0b\u7684 CAA \u8bb0\u5f55\u914d\u7f6e\u65b9\u6cd5<\/h2>\n<p>\u914d\u7f6e\u5165\u53e3\u5728\u57df\u540d\u89e3\u6790\u670d\u52a1\u5546\u7684\u7ba1\u7406\u540e\u53f0\uff1a\u8fdb\u5165\u5bf9\u5e94\u57df\u540d\u7684\u89e3\u6790\u8bb0\u5f55\u9875\uff0c\u6dfb\u52a0\u8bb0\u5f55\u65f6\u628a\u8bb0\u5f55\u7c7b\u578b\u9009\u4e3a CAA\uff0c\u586b\u5199\u4e3b\u673a\u540d\u3001\u6807\u5fd7\u4f4d\u3001\u6807\u7b7e\u548c\u503c\u5373\u53ef\u3002\u4e0d\u540c\u670d\u52a1\u5546\u754c\u9762\u7565\u6709\u5dee\u5f02\uff0c\u4f46\u5b57\u6bb5\u542b\u4e49\u4e00\u81f4\uff0c\u4e0b\u9762\u6309\u4e09\u4e2a\u5178\u578b\u573a\u666f\u7ed9\u51fa\u53ef\u4ee5\u76f4\u63a5\u5957\u7528\u7684\u914d\u7f6e\u3002<\/p>\n<p><strong>\u573a\u666f\u4e00\uff1a\u5355\u4e00 CA\uff0c\u6700\u7b80\u5355\u7684\u6536\u7d27\u3002<\/strong> \u5047\u8bbe\u4f60\u7684\u7ad9\u70b9\u53ea\u7528 Let&#8217;s Encrypt \u7b7e\u53d1\uff0c\u53ea\u9700\u6dfb\u52a0\u4e24\u6761\u8bb0\u5f55\u2014\u2014\u4e00\u6761\u7ba1\u666e\u901a\u8bc1\u4e66\uff0c\u4e00\u6761\u7ba1\u8fdd\u89c4\u62a5\u544a\uff1a<\/p>\n<pre><code class=\"language-text\">example.com.  CAA  0 issue &quot;letsencrypt.org&quot;\nexample.com.  CAA  0 iodef &quot;mailto:security@example.com&quot;\n<\/code><\/pre>\n<p>\u6ce8\u610f value \u5fc5\u987b\u7528\u82f1\u6587\u53cc\u5f15\u53f7\u5305\u4f4f CA \u57df\u540d\uff0c\u5f88\u591a\u63a7\u5236\u53f0\u4f1a\u5e2e\u4f60\u81ea\u52a8\u8865\u5f15\u53f7\uff0c\u4f46\u7528 API \u6216 zone \u6587\u4ef6\u76f4\u63a5\u7f16\u8f91\u65f6\u5bb9\u6613\u6f0f\u6389\u3002<\/p>\n<p><strong>\u573a\u666f\u4e8c\uff1a\u5141\u8bb8\u591a\u5bb6 CA \u5e76\u5b58\u3002<\/strong> \u5982\u679c\u4e3b\u7ad9\u7528\u5546\u4e1a\u8bc1\u4e66\u3001\u5b50\u57df\u6d4b\u8bd5\u73af\u5883\u7528 Let&#8217;s Encrypt\uff0c\u53ef\u4ee5\u5e76\u5217\u591a\u6761 <code>issue<\/code> \u8bb0\u5f55\u3002\u7b7e\u53d1\u673a\u6784\u5728\u68c0\u67e5\u65f6\u53ea\u8981\u6ee1\u8db3\u5176\u4e2d\u4efb\u610f\u4e00\u6761\u5373\u53ef\u901a\u8fc7\uff1a<\/p>\n<pre><code class=\"language-text\">example.com.  CAA  0 issue &quot;digicert.com&quot;\nexample.com.  CAA  0 issue &quot;letsencrypt.org&quot;\nexample.com.  CAA  0 iodef &quot;mailto:security@example.com&quot;\n<\/code><\/pre>\n<p><strong>\u573a\u666f\u4e09\uff1a\u9700\u8981\u901a\u914d\u7b26\u8bc1\u4e66\uff0c\u4e14\u548c\u666e\u901a\u8bc1\u4e66\u7528\u540c\u4e00\u5bb6 CA\u3002<\/strong> \u5982\u679c\u4e0d\u5199\u4efb\u4f55 <code>issuewild<\/code> \u8bb0\u5f55\uff0c\u901a\u914d\u7b26\u7b7e\u53d1\u4f1a\u6cbf\u7528 <code>issue<\/code> \u5217\u8868\uff1b\u4f46\u5982\u679c\u5199\u4e86 <code>issuewild<\/code>\uff0c\u901a\u914d\u7b26\u8bc1\u4e66\u5c31\u53ea\u770b <code>issuewild<\/code>\uff0c<code>issue<\/code> \u5bf9\u5b83\u5931\u6548\u3002\u660e\u786e\u5199\u51fa\u66f4\u7a33\u59a5\uff1a<\/p>\n<pre><code class=\"language-text\">example.com.  CAA  0 issue &quot;letsencrypt.org&quot;\nexample.com.  CAA  0 issuewild &quot;letsencrypt.org&quot;\nexample.com.  CAA  0 iodef &quot;mailto:security@example.com&quot;\n<\/code><\/pre>\n<p>\u53cd\u8fc7\u6765\uff0c\u5982\u679c\u4f60\u60f3\u628a\u901a\u914d\u7b26\u5f7b\u5e95\u5173\u6389\uff08\u4e0d\u5c11\u5b89\u5168\u56e2\u961f\u4f1a\u8fd9\u4e48\u505a\uff0c\u56e0\u4e3a\u901a\u914d\u7b26\u8bc1\u4e66\u4e00\u65e6\u6cc4\u9732\u5f71\u54cd\u9762\u6700\u5927\uff09\uff0c\u53ef\u4ee5\u5199\u4e00\u6761\u6307\u5411\u7a7a\u503c\u7684 <code>issuewild<\/code>\uff1a<code>example.com. CAA 0 issuewild \";\"<\/code>\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/11\/caa-ca-ssl-config-compare.webp\" alt=\"CAA \u914d\u7f6e\u524d\u540e\u5bf9\u6bd4\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<h2>\u914d\u7f6e\u540e\u5982\u4f55\u9a8c\u8bc1\u751f\u6548<\/h2>\n<p>\u8bb0\u5f55\u4fdd\u5b58\u540e\u4e0d\u8981\u60f3\u5f53\u7136\u8ba4\u4e3a\u5df2\u7ecf\u751f\u6548\uff0c\u6309\u4e09\u6b65\u9a8c\u8bc1\uff1a\u5148\u7528 <code>dig<\/code> \u786e\u8ba4\u6743\u5a01\u89e3\u6790\u8fd4\u56de\u8bb0\u5f55\uff1b\u518d\u7528\u5728\u7ebf CAA \u68c0\u6d4b\u5de5\u5177\u4ea4\u53c9\u786e\u8ba4\uff1b\u6700\u540e\u7528\u4e00\u6b21\u771f\u5b9e\u7b7e\u53d1\u6216\u7eed\u671f\u505a\u7aef\u5230\u7aef\u9a8c\u8bc1\u3002<\/p>\n<pre><code class=\"language-bash\"># \u9a8c\u8bc1 CAA \u8bb0\u5f55\u5df2\u751f\u6548\uff0c\u5e94\u8fd4\u56de\u914d\u7f6e\u7684\u4e09\u6761\u8bb0\u5f55\ndig example.com CAA +short\n\n# \u6307\u5b9a\u6743\u5a01\u670d\u52a1\u5668\u67e5\u8be2\uff0c\u6392\u9664\u672c\u5730\u7f13\u5b58\u5e72\u6270\ndig @ns1.your-dns-provider.com example.com CAA +short\n<\/code><\/pre>\n<p>\u9a8c\u8bc1\u65f6\u6709\u4e24\u4e2a\u65f6\u95f4\u56e0\u7d20\u8981\u7559\u610f\uff1a\u4e00\u662f DNS \u7f13\u5b58\uff0c\u65b0\u8bb0\u5f55\u7684\u5168\u7403\u751f\u6548\u901f\u5ea6\u53d6\u51b3\u4e8e TTL\uff08Time To Live\uff0cDNS \u8bb0\u5f55\u7f13\u5b58\u6709\u6548\u671f\uff09\uff1b\u4e8c\u662f\u8bc1\u4e66\u9881\u53d1\u673a\u6784\u5185\u90e8\u7684\u7b56\u7565\u7f13\u5b58\uff0c\u4e2a\u522b CA \u4f1a\u7f13\u5b58 CAA \u67e5\u8be2\u7ed3\u679c\u6700\u957f 8 \u5c0f\u65f6\u3002\u5982\u679c\u7d27\u63a5\u7740\u5c31\u8981\u7eed\u671f\uff0c\u5efa\u8bae\u5148\u628a TTL \u8bbe\u77ed\u4e00\u4e9b\uff08\u5982 300 \u79d2\uff09\uff0c\u786e\u8ba4\u7b7e\u53d1\u6b63\u5e38\u540e\u518d\u8c03\u56de\u3002<\/p>\n<p>iodef \u7684\u62a5\u544a\u901a\u9053\u4e5f\u53ef\u4ee5\u987a\u624b\u9a8c\u8bc1\uff1a\u8fd9\u6761\u6807\u7b7e\u652f\u6301 <code>mailto:<\/code> \u548c <code>http:<\/code> \u4e24\u79cd\u683c\u5f0f\uff0cCA \u9047\u5230\u88ab\u62d2\u7edd\u7684\u7b7e\u53d1\u8bf7\u6c42\u65f6\u4f1a\u5411\u8fd9\u4e2a\u5730\u5740\u53d1\u62a5\u544a\u3002\u914d\u7f6e\u4e00\u4e2a\u786e\u5b9e\u80fd\u6536\u4fe1\u7684\u90ae\u7bb1\uff0c\u624d\u4e0d\u4f1a\u5728\u51fa\u4e8b\u65f6\u9519\u8fc7\u8b66\u62a5\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/11\/caa-ca-ssl-issuance-flow.webp\" alt=\"CAA \u8bb0\u5f55\u7b7e\u53d1\u62e6\u622a\u6d41\u7a0b\u793a\u610f\" loading=\"lazy\" \/><\/p>\n<h2>\u8bc1\u4e66\u7eed\u671f\u7a81\u7136\u5931\u8d25\uff1f\u5148\u67e5\u8fd9\u4e09\u5904<\/h2>\n<p>CAA \u914d\u7f6e\u6700\u5e38\u89c1\u7684\u7ffb\u8f66\u73b0\u573a\u662f&#8221;\u914d\u5b8c\u6ca1\u7ba1\uff0c\u51e0\u4e2a\u6708\u540e\u7eed\u671f\u96c6\u4f53\u5931\u8d25&#8221;\u3002\u6309\u4e0b\u9762\u987a\u5e8f\u6392\u67e5\uff0c\u901a\u5e38\u51e0\u5206\u949f\u5185\u80fd\u5b9a\u4f4d\uff1a<\/p>\n<ol>\n<li><strong>\u5148\u770b\u7eed\u671f\u65e5\u5fd7\u91cc\u7684\u62a5\u9519\u5173\u952e\u8bcd<\/strong>\u3002Let&#8217;s Encrypt \u7684\u62a5\u9519\u4f1a\u76f4\u63a5\u5305\u542b <code>CAA<\/code> \u5b57\u6837\u5e76\u5199\u660e\u662f\u54ea\u4e2a CA \u57df\u540d\u4e0d\u5339\u914d\uff1b\u5546\u4e1a CA \u7684\u62a5\u9519\u63aa\u8f9e\u4e0d\u540c\uff0c\u4f46\u540c\u6837\u4f1a\u8bf4\u660e\u7b7e\u53d1\u88ab\u7b56\u7565\u62d2\u7edd\u3002<\/li>\n<li><strong>\u6838\u5bf9\u8bb0\u5f55\u91cc\u7684 CA \u57df\u540d\u548c\u5b9e\u9645\u7b7e\u53d1\u65b9\u662f\u5426\u4e00\u81f4<\/strong>\u3002\u91cd\u70b9\u68c0\u67e5\u4e09\u5904\uff1aCA \u81ea\u5df1\u6709\u6ca1\u6709\u6362\u767b\u8bb0\u57df\u540d\uff08\u5386\u53f2\u4e0a\u53d1\u751f\u8fc7\uff09\u3001\u4f60\u662f\u5426\u7528 ACME\uff08Automated Certificate Management Environment\uff0c\u81ea\u52a8\u5316\u8bc1\u4e66\u7ba1\u7406\u73af\u5883\uff09\u5ba2\u6237\u7aef\u8d70\u4e86\u4e2d\u95f4\u5546\u670d\u52a1\u3001\u7eed\u671f\u662f\u5426\u65b0\u5f15\u5165\u4e86\u901a\u914d\u7b26\u800c <code>issuewild<\/code> \u6ca1\u8ddf\u4e0a\u3002<br \/>\n\u8fd8\u6709\u4e00\u79cd\u60c5\u51b5\u8981\u7559\u610f\uff1a<strong>\u5b50\u57df\u8986\u76d6<\/strong>\u3002\u5982\u679c\u5931\u8d25\u7684\u8bc1\u4e66\u6302\u5728\u67d0\u4e2a\u5b50\u57df\u4e0a\uff0c\u7528 <code>dig \u5b50\u57df CAA +short<\/code> \u786e\u8ba4\u5b83\u662f\u5426\u610f\u5916\u914d\u7f6e\u4e86\u81ea\u5df1\u7684 CAA \u8bb0\u5f55\uff0c\u8986\u76d6\u6389\u7236\u57df\u653e\u5f00\u7684\u6743\u9650\u3002<\/li>\n<\/ol>\n<p>\u6392\u67e5\u671f\u95f4\u5982\u679c\u7ebf\u4e0a\u8bc1\u4e66\u5373\u5c06\u5230\u671f\uff0c\u5148\u4e34\u65f6\u628a\u5f53\u524d\u7b7e\u53d1\u65b9\u7684\u57df\u540d\u52a0\u56de CAA \u8bb0\u5f55\u6062\u590d\u7b7e\u53d1\uff0c\u7b49\u8bc1\u4e66\u7eed\u4e0a\u518d\u6536\u7d27\u5217\u8868\u2014\u2014CAA \u662f DNS \u8bb0\u5f55\uff0c\u901a\u5e38\u4e0d\u8d85\u8fc7\u4e00\u4e2a TTL \u5468\u671f\u5c31\u4f1a\u751f\u6548\u3002\u7eed\u671f\u76d1\u63a7\u548c\u5230\u671f\u544a\u8b66\u5c5e\u4e8e\u53e6\u4e00\u6761\u7ebf\uff0c\u53c2\u8003\u8fd9\u7bc7<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/certbot-troubleshooting-server-ssl\/\"> Certbot \u8bc1\u4e66\u81ea\u52a8\u7eed\u671f\u6392\u969c\uff1a\u670d\u52a1\u5668 SSL \u90e8\u7f72\u4e0e\u7eed\u671f\u9a8c\u8bc1<\/a>\u5206\u5f00\u7ba1\u597d\u3002<\/p>\n<h2>\u591a\u57df\u540d\u548c\u6279\u91cf\u7ad9\u70b9\u573a\u666f\u7684\u7ba1\u7406\u5efa\u8bae<\/h2>\n<p>\u57df\u540d\u6570\u91cf\u4e00\u591a\uff0cCAA \u5c31\u4ece&#8221;\u4e00\u6b21\u6027\u914d\u7f6e&#8221;\u53d8\u6210&#8221;\u9700\u8981\u7ba1\u7406\u7684\u8d44\u4ea7&#8221;\uff0c\u51e0\u4e2a\u5b9e\u8df5\u88ab\u53cd\u590d\u9a8c\u8bc1\u6709\u6548\uff1a<\/p>\n<ul>\n<li>\u628a\u6bcf\u4e2a\u57df\u540d\u7684 CAA \u914d\u7f6e\u5199\u8fdb\u57fa\u7840\u8bbe\u65bd\u4ee3\u7801\u4ed3\u5e93\uff08\u5982 zone \u6587\u4ef6\u6216 Terraform \u6a21\u5757\uff09\uff0c\u548c<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e<\/a>\u4e00\u8d77\u8d70\u53d8\u66f4\u6d41\u7a0b\uff0c\u907f\u514d\u53ea\u5728 DNS \u63a7\u5236\u53f0\u4e0a&#8221;\u987a\u624b\u6539&#8221;<\/li>\n<li>\u6bcf\u5b63\u5ea6\u7528 <code>dig<\/code> \u6279\u91cf\u5de1\u68c0\u5168\u90e8\u57df\u540d\u7684 CAA \u8bb0\u5f55\uff0c\u6838\u5bf9\u5141\u8bb8\u5217\u8868\u4e0e\u5b9e\u9645\u5728\u7528\u7684 CA \u662f\u5426\u4e00\u81f4\uff1b\u51fa\u73b0&#8221;\u8bb0\u5f55\u91cc\u6ca1\u6709\u4f46\u5b9e\u9645\u5728\u7528&#8221;\u7684 CA\uff0c\u5c31\u662f\u4e0b\u6b21\u7eed\u671f\u4e8b\u6545\u7684\u9884\u544a<\/li>\n<li>iodef \u90ae\u7bb1\u63a5\u5230\u62a5\u544a\u540e\u5f53\u5b89\u5168\u4e8b\u4ef6\u5904\u7406\uff1a\u67e5\u6e05\u662f\u54ea\u4e2a CA\u3001\u54ea\u4e2a\u8d26\u53f7\u53d1\u8d77\u7684\u7b7e\u53d1\u8bf7\u6c42\uff0c\u786e\u8ba4\u4e0d\u662f\u81ea\u5df1\u56e2\u961f\u7684\u64cd\u4f5c\u540e\u518d\u8003\u8651\u8fdb\u4e00\u6b65\u63aa\u65bd<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f60\u7684\u7ad9\u70b9\u90e8\u7f72\u5728<a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u72ec\u7acb\u670d\u52a1\u5668<\/a>\u6216 <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS\uff08Virtual Private Server\uff0c\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09<\/a>\u4e0a\u3001\u8bc1\u4e66\u7531\u81ea\u5df1\u7b7e\u53d1\u7ba1\u7406\uff0cCAA \u548c\u670d\u52a1\u5668\u4fa7\u7684\u5b89\u5168\u57fa\u7ebf\u5e94\u8be5\u4e00\u8d77\u505a\uff0c\u53ef\u4ee5\u642d\u914d\u8fd9\u4efd<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/server-security-hardening-checklist\/\">\u670d\u52a1\u5668\u5b89\u5168\u52a0\u56fa\u6e05\u5355\uff1a\u4ece\u767b\u5f55\u5165\u53e3\u5230\u5185\u6838\u53c2\u6570<\/a>\u9010\u9879\u8fc7\u4e00\u904d\u3002\u57df\u540d\u89e3\u6790\u5c42\u9762\u7684\u5176\u5b83\u9632\u62a4\uff08\u5982 DNSSEC \u7b7e\u540d\u9a8c\u8bc1\uff09\u5c5e\u4e8e\u53e6\u4e00\u6761\u9632\u7ebf\uff0c\u64cd\u4f5c\u65b9\u6cd5\u89c1\u8fd9\u7bc7<a href=\"https:\/\/cn.hostease.com\/blog\/guides\/dnssec-deployment-signing\/\">DNSSEC \u90e8\u7f72\uff1a\u7ed9\u57df\u540d\u89e3\u6790\u52a0\u4e0a\u7b7e\u540d\u9a8c\u8bc1<\/a>\u3002<\/p>\n<h2>\u603b\u7ed3<\/h2>\n<p>CAA \u8bb0\u5f55\u53d6\u56de\u7684\u662f\u8bc1\u4e66\u7b7e\u53d1\u7684\u6388\u6743\u6743\uff1a\u4e09\u6761\u8bb0\u5f55\u3001\u4e09\u4e2a\u6807\u7b7e\uff0c\u5c31\u80fd\u628a&#8221;\u8c01\u80fd\u4e3a\u6211\u7684\u57df\u540d\u7b7e\u53d1 SSL \u8bc1\u4e66&#8221;\u9650\u5b9a\u6210\u4e00\u5f20\u660e\u786e\u7684\u767d\u540d\u5355\u3002\u914d\u7f6e\u53ea\u8981\u51e0\u5206\u949f\uff0c\u5173\u952e\u662f\u914d\u7f6e\u524d\u786e\u8ba4 CA \u57df\u540d\u3001\u914d\u7f6e\u540e\u9a8c\u8bc1\u751f\u6548\u3001\u5e76\u628a\u5b83\u7eb3\u5165\u5b63\u5ea6\u5de1\u68c0\u3002\u5982\u679c\u4f60\u9700\u8981\u6258\u7ba1\u73af\u5883\u4e0b\u7684\u8bc1\u4e66\u4e0e\u5b89\u5168\u4e00\u4f53\u5316\u65b9\u6848\uff0c\u53ef\u4ee5\u8003\u8651 <a href=\"https:\/\/cn.hostease.com\/shared-hosting.html\">Hostease \u865a\u62df\u4e3b\u673a<\/a>\uff0ccPanel \u9762\u677f\u96c6\u6210 SSL\/TLS Status \u7ba1\u7406\uff0c\u8bc1\u4e66\u5b89\u88c5\u4e0e\u7eed\u671f\u5728\u540e\u53f0\u4e00\u952e\u5b8c\u6210\uff1b\u81ea\u8fd0\u7ef4\u573a\u666f\u5219\u63a8\u8350 <a href=\"https:\/\/cn.hostease.com\/vps\/\">Hostease VPS<\/a>\uff0c\u914d\u5408 Let&#8217;s Encrypt \u81ea\u52a8\u7eed\u671f\u628a\u6574\u6761\u8bc1\u4e66\u751f\u547d\u5468\u671f\u7ba1\u8d77\u6765\u3002\u5efa\u8bae\u4eca\u5929\u5c31\u7ed9\u81ea\u5df1\u7684\u4e3b\u57df\u540d\u52a0\u4e0a CAA \u8bb0\u5f55\u2014\u2014\u8fd9\u662f\u4e00\u9879\u5178\u578b\u7684&#8221;\u73b0\u5728\u82b1 5 \u5206\u949f\uff0c\u907f\u514d\u5c06\u6765\u6392\u969c\u4e00\u6574\u5929&#8221;\u7684\u914d\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CAA \u8bb0\u5f55\u914d\u7f6e\u6559\u7a0b\uff1a\u5982\u4f55\u7528 DNS CAA \u53ea\u5141\u8bb8\u6307\u5b9a\u8bc1\u4e66\u9881\u53d1\u673a\u6784\u4e3a\u7f51\u7ad9\u7b7e\u53d1 SSL \u8bc1\u4e66\uff0c\u8986\u76d6 issue\u3001issuewild\u3001iodef \u4e09\u4e2a\u6807\u7b7e\u7684\u7528\u6cd5\u3001\u9a8c\u8bc1\u65b9\u6cd5\u4e0e\u5e38\u89c1\u62a5\u9519\u6392\u67e5\u3002<\/p>\n","protected":false},"author":2,"featured_media":34482,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3822],"tags":[5533,301,162,58,5534],"class_list":["post-34485","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-caa","tag-dns","tag-ssl","tag-58","tag-5534"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/11\/caa-ca-ssl-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34485","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=34485"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34485\/revisions"}],"predecessor-version":[{"id":34486,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/34485\/revisions\/34486"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/34482"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=34485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=34485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=34485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}