I have sucessfully set up Virtual Users And Domains With Postfix, Courier And MySQL (+ SMTP-AUTH, Quota, SpamAssassin, ClamAV) using Debian. However, I have a question.
If I wanted to catch mails coming to domainA and forward them over to my exchange box, do I have to set up the virtual users? I know I have to create the domain and transport entries, which I've already done.