I'm getting ready to migrate to Exchange 2010 from 2003. I have several virtual machines setup to test the installation.
I have a default install of Exchange 2003. I have a CAS, HT, and Mailbox servers. After the install all message are getting stuck in the following queue:
HTserver (Routing Group Connector)
The following error is logged: 421 4.3.2 Service Not Available.
Is there something that must be completed to allow mail flow between the two routing groups?