Interesting problem.
The old setup had domain_123.com with 20 users and exchange email. Later there was a separation of entities but everyone still used the same server and network. So I had all 20 users under the domain_123.com, 10 users under domain_abc.com and 10 users under domain_xyz.com.
I've moved the domain_xyz.com users to MS Office 365 - still using @domain_xyz.com email addresses. Everything is going great, except they can't get email from people still using the internal exchange server. It routs to the internal exchange mail boxes. I deleted one user mail box and test messages sent from the internal exchange come back Undeliverable. "The e-mail account does not exist at the organization this message was sent to..."
What do I need to change on the 2003 SBS Server to properly route the email?
Thanks!
The old setup had domain_123.com with 20 users and exchange email. Later there was a separation of entities but everyone still used the same server and network. So I had all 20 users under the domain_123.com, 10 users under domain_abc.com and 10 users under domain_xyz.com.
I've moved the domain_xyz.com users to MS Office 365 - still using @domain_xyz.com email addresses. Everything is going great, except they can't get email from people still using the internal exchange server. It routs to the internal exchange mail boxes. I deleted one user mail box and test messages sent from the internal exchange come back Undeliverable. "The e-mail account does not exist at the organization this message was sent to..."
What do I need to change on the 2003 SBS Server to properly route the email?
Thanks!