I setup Outlook to auth SMTP same as logon, and port 587 using TLS.
In Webmin I 'enabled' submission.
I read a post by someone on the virtualmin site that the user should also have FTP access, so I changed 'email only' to Email, FTP.
Did all that but when I attempt to send out mail, it's always hanging and then timing out.
Appreciate any help, thanks.