First off I am new to Webmin so bare with me. The only problem I am having right now is making my mail server work. I enabled Postfix and had everything in my email client configured correctly. When I would try to retrieve mail it would say that the host could not be found. I then saw that Dovecot IMAP/POP3 Server was not installed so once I had installed it my email client did find the host. I then wanted to test the mail server I sent an email from another provider to my mail server only to receive a bounce email back saying that the email could not be delivered for 3 hours. Anyone have any insight on this type of problem?
What exactly was in that bounce message? Are there any errors in the mail log? Does the MX record for the domain you tried to send to point to your server? You can check that with Code: dig mx yourdomain.com