MX服务器发送的SSL证书已过期问题排查求助
MX服务器发送的SSL证书已过期问题排查求助
大家好,我现在正卡在一个SSL证书的问题上,想请各位帮忙排查下。
我是通过CheckTLS检测到这个问题的,检测结果显示:
Certificate #1 of 3 (sent by MX): EXPIRED
Cert VALIDATION ERROR(S): certificate has expired
So email is encrypted but the recipient domain is not verified
Cert Hostname VERIFIED (townsendhardware.com = townsendhardware.com | DNS:townsendhardware.com)
Not Valid Before: Jul 18 11:54:10 2024 GMT
Not Valid After: Oct 16 11:54:09 2024 GMT
subject: /CN=townsendhardware.com
issuer: /C=US/O=Let's Encrypt/CN=R11
奇怪的是,我用浏览器访问网站时,SSL证书是完全正常的,所以这个过期的证书肯定不是网站服务器发出来的,应该是来自其他地方。
之后我用SSLShopper分别检查了townsendhardware.com,还有抱着试试的心态查了mail.townsendhardware.com,结果发现...
备注:内容来源于stack exchange,提问作者JBH
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