连续两天收到中间人威胁警告邮件

两封来自 Fastly ，他们提示我的证书匹配不上，而且好像很急的样子。我没去理他，第三封说了以下内容 Hello,

We're writing because we haven't received a reply from you regarding our earlier message.

This is an urgent update regarding your services that requires your action. We want to be sure you have time to update your service before the issue is communicated to a wider audience.

Please let us know that you have received this message and are in the process implementing corrections.
As always, we're available to help with any configuration questions you may have.

Thanks,
Kami
Fastly Customer Support

这到底是怎么回事，刚才谷歌也来邮件了提示 SSL 证书可能错误。

看了一下自己的域名完全是 OK 的，误报还是怎么回事？