I am actually trying (fighting?) to know the requested informations about the email server for using Thunderbird.
I have created several email users in virtualmin, but I cannot find the following informations:
SMTP:
Server name
Port
User (the name of the user I guess)
authentification method
All POP or IMAP informations about these email accounts.
I am tired to looking for these informations everywhere in Virtualmin, I checked all the menus so much times unsuccessfully…
Okay, enabling SSL on Ubuntu should be fairly straight forward… if you edit /etc/postfix/master.cf, uncomment the lines near the top that are related to “smtps” and “submission” (there’d be 3-4 lines for each of those).
After you do that – restart Postfix, and see if you can then connect to port 465 or 587 with SSL to send email.
If that doesn’t completely fix the problems you’re having – let us know what errors you get when sending or receiving email. Thanks!