Using this howto: http://www.howtoforge.com/virtual-users-domains-postfix-courier-mysql-squirrelmail-centos-5.3-x86_64 I am attempting to receive mail for another domain. More specifically, I'm trying to catch mail for a specific email address and forward that onto a gmail address. It works if I'm sending the email FROM my domain, but if I try to email for the address from gmail, I'll get a 550 rejected message back from google (saying that my mail server rejected the mail because of the recipient domain). I added the domain in the domains table in the mail database. What else should I be doing to make that work?
That was the problem. Looks like someone had been mucking around in the domain config and changed the MX record back to the original configuration. Now everything works perfectly again. Thanks!