ubuntu 16.04 webmin 1.902 apache 2.4.18 postfix 3.1.0 dovecot 2.2.22
ive suddenly begun experiencing the strangest certificate issues that have stopped mail delivery for select clients. those clients are getting a name mismatch error with my mail server's certificate.
as per the recommendations found in ur setup guide, ive registered a separate domain, antiochtechnologies.com, for use with wembin. it is NOT connected to the virtual server antiochtech.com. however when i ran mail.antiochtechnologies.com (a san of antiochtechnologies.com) through a certificate checker, it came back with the name mismatch error pointing to amrocks.us, another virtual server i run. when i deleted that virtual server, and re-ran the check, the same error results but now points to antiochtech.com - the alphabetical significance of which did not escape me. but im lost as to what went wrong and how to correct it as no changes, save for the usual software updates, have taken place recently.