On our SBS 2003 server I have set up a 2nd domain for email delivery.
Only a few people in the organization need both the original email (@domain1) and the new email (@domain2) addresses.
I have verified that sending and receiving email from external sources to these addresses works correctly.
For those employees that only need the new address (@domain2), I simply added the new address to the "E-Mail Addresses" tab in ADUC and made it their primary SMTP account. Now, when they send email from Outlook, it uses the @domain2 domain by default. Great!
The only problem I have now is that when these people send emails to recipients in the other domain (to @domain1) users, they receive the email. But if someone from @domain1 tries to email a user @domain2, the recipient never receives the email.
It hasn't been long enough to receive an NDR, so I'm not sure what the error will be exactly. Any idea what's going on?
The Exchange queue shows the test messages in the Local Delivery queue...just waiting.