I have been struggling with email on virtualmin for well over 12 months with SSL for multiple domains. I can find no useful documentation anywhere on setting up Secure email for multiple domains using webmin / virtualmin. For example : My host site could be server.MYHOST.COM with mail.MYHOST.com, ns.MYHOST.COM etc and using its SSL cert in postfix etc. Then I have Websites: WEBSITE1.COM SECONDSITE.COM WEB3.COM etc all with there own SSL certificate for website. Webmin will configure email servers for the users as mail.WEBSITE1.COM, or mail.WEB3.COM etc and these will give security errors within outlook etc. mail.MYHOST.COM with admin@MYHOST.COM works fine. EVERY email address that is not the myhost.com gives a warning in outlook re SSL Certificate even though every site has ssl website access fine.
I have had suggestions to use mail.MYHOST.COM as servers for the other domains and that doesn't help as user1@WEBSITE1.COM gives error its using MYHOST.COM cert for email. I have been told to setup up a seperate domain just for email, but again limited info and limited success. Is there a tutorial, info etc on how to configure email for multiple domains that comply with SSL etc.? I have recently bought a 3rd server, this one dedicated, and am trying to set it up correctly and still the same issues. Currently this server is not in production so I can attempt to try and find a solution. Yes I have 5 ip addresses on this server and NO I cannot dedicate and IP to every domain. I WAS thinking of dedicating 1 to the MailServer and sharing the rest amongst the 11 domains I want to shift to it. I am aiming at simple as possible for all. IE clients can setup their clients with autoconfig etc and add and remover users as they need without endless headaches. My early shared system use to handle this easily but not so much with virtualmin. I believe its only setting but WHICH settings?