I've installed Installed new Exchange 2003 in Win 2000 domain with existing exchange 2000. Everything went well.
I've successfully moved one mailbox over to the new 2003 server as a test.
Using the moved email account I can send and receive emails to external sources.
I can receive emails from users' who's mailboxes still reside on the 2000 box. But emails send from this account is never received by the recipients on the 2000 box.
I'm wondering if there is a some sort of relationship which needs to enabled for this to work.
-New to the Exchange Admin world.