[SOLVED] Forwarding to parent domain

[rleach]

I've got an existing IMAP server that all of my mail goes through.
Call the domain foo.com, so my mail server is mail.foo.com.
I've set up Zimbra as zimbra.foo.com.
I've set up an external account for mail.foo.com.

Mail from roy@zimbra.foo.com to roy@zimbra.foo.com works fine.
Mail from roy@zimbra.foo.com to the outside world works fine.
Mail from roy@zimbra.foo.com to roy@foo.com FAILS.

I've found things about how to forward a single machine (like zimbra.foo.com) but nothing to say how to forward everything in a domain EXCEPT a single machine.

Perhaps I'm on the wrong track...

Any ideas out there?
Thanks!
roy.

[rleach]

Must've been user error...
I had created another domain called foo.com which messed things up.