Hi there. I've been using my main virtual server in virtualmin with lets encrypt in order to support all my clients' connections to their own domains with valid SSL Certificate. So i use Let's Encrypt and request a certificate ofr all the default values but also for mail.domain1.tld, mail.domain2.tld etc. I also add those lines under autodiscover command line in "Directives for SSL" (ServerAlias mail.domain1.tld, ServerAlias mail.domain2.tld)
So that's how I am able to make thunderbird be able to use an encrypted connection.
A problem appeared yesterday some hours ago though. I generated a new SSSL Certificate for the main server and from that time noone can connect to the server using Thunderbird.
Can someone please let me know on what's the issue with authentication and SSL???? I am having a great problem with all my clients calling me, and i made no changes to my config...
Thanks in advance, Chill_Surf