The only problem I have is that all the users that have configured their mail client with the old domain, receive a certificate error because the CN doesn’t match (even if MIAB has certificates for both the domains, the webmail on the old domain works)
Can this be solved in MIAB? Or what is the best way to do this? A reverse proxy that listen on 993/587 on the olddomain and forward it to the new one? Has anyone ever done this and can give me some advice?