Hello, my thunderbird was working correctly for several months and since few days it just stopped pulling messages from the server and I also can’t send messages. This is the message Thunderbird gives me when trying to send an email.
Sending of the message failed.
The certificate is not trusted because it is self-signed.
The configuration related to mail.domain.com must be corrected.
These are my DNS records:
I have tried to manually issue certificates and it works. But when thunderbird check mail.domain.com:143 or mail.domain.com:465 it can’t find certificate. However, when it checks for mail.domain.com, without the ports, it finds the certificate.
My Cyberpanel version is 2.1.2 and I haven’t updated anything in the server for few months. The Thunderbird was working correctly until few days ago.
EDIT: Forgot to mention that sending and receiving in rainloop (webmail) works. I have also disabled the antivirus and double checked if the ports has been blocked.