改了 Cloudflare 邮箱忘记改 Certbot 配置，所以证书自动更新挂了。
然后 Let's Encrypt 早早地就发了几封提醒邮件，我非要拖延到证书真的过期再去处理。👍
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然后 Let's Encrypt 早早地就发了几封提醒邮件，我非要拖延到证书真的过期再去处理。👍