<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>Let's Encrypt on 岁牛笔记</title><link>https://taisuii.cn/tags/lets-encrypt/</link><description>Recent content in Let's Encrypt on 岁牛笔记</description><image><title>岁牛笔记</title><url>https://taisuii.cn/og-image.png</url><link>https://taisuii.cn/og-image.png</link></image><generator>Hugo</generator><language>zh-cn</language><copyright>岁牛笔记 · 湘ICP备2021013885号-1</copyright><lastBuildDate>Thu, 03 Sep 2026 10:00:00 +0800</lastBuildDate><atom:link href="https://taisuii.cn/tags/lets-encrypt/index.xml" rel="self" type="application/rss+xml"/><item><title>Let's Encrypt 通配证书为什么只能走 DNS-01，以及签完之后省下的那些事</title><link>https://taisuii.cn/posts/wildcard-cert-dns01/</link><pubDate>Thu, 03 Sep 2026 10:00:00 +0800</pubDate><guid>https://taisuii.cn/posts/wildcard-cert-dns01/</guid><description>一个域名下要开十几个子域名做测试，每个都单独签证书是不可持续的。通配证书能一次解决，但它有个绕不开的前提。</description></item></channel></rss>