I have this problem continuously.
- Thunderbird works fine, using POP and SMTP
- Crazy Domains changes something on the shared server
- Thunderbird stops fetching email
- I complain and provide the certificate again and they apply it
- Thunderbird starts working again.
Except this last time, it will not fetch the mail. When I look at the certificate that Thunderbird is fetching, it says it expired on 25 May 2023. It had, but was renewed. Access to the website with https works fine.
So, I would like to see for myself what the certificate looks like. How can I do this?
The following is for Linux and I have a Windows PC for development: Auto check that HTTPS certificate has renewed successfully
For some reason my site doesn't have a certificate for mail.example.com
, but it does for example.com
which always works. This is the only site where the certificate covers the mail
subdomain. Is this the problem perhaps?
imap.myhost.example
and use their certificate. Is a subdomain of your own domain really needed for mail access?openssl s_client
to just connect to remote end (which you don't specify) and get the certificate. The certificate used there is not necessarily the same as for HTTPS, as different ports, and very much possibly different names.