Dedicated Email server, from Virtualmin > System Info > Status Servers=Postfix, Dovecot IMAP POP, SSH, ClamAV & SpamAssassin. No SSL enabled
Virtualmin > Server Configuration > Select a domain > Manage SSL Certificate is NOT AVAILABLE (Allows certificate copy to Webmin, Usemin, Dovecot and Postfix. There appears to be no easy way to manage certificates, consequently the dedicated email server does not support IMAP or POP3 secure login by Thunderbird from Virtualmin.
On a Dedicated Web server these features are available evidently because the Apache Server is enabled for the websites, and for some reason the Managment of SSL Certificates is available.
Why can't we use SSL on a dedicated Email Server with Pop and Imap Thunderbird? That is where it is needed to prevent a host of spam.... I assume this is possible, but do not know how to configure it.
Perhaps someone can advise further. I'd like to know how to configure Virtualmin/Webmin for secure SSL/TLS or STARTTLS connections for incoming and outgoing SMTP server, with encryption of login passwords to work with Thunderbird client IMAP and POP. 995 and 993 are open. 80 & 443 are closed.