Exchange Server 5.5 to Exchange Server 2k3 migration mail flow issues
Posted on 2007-04-10
I'm in the process of migrating from Exchange 5.5 to Exchange 2003. I've used the Exchange 2k3 deployment guide and have completed the process from beginning to the deployment of my first Exchange 2k3 server. This includes successfully setting up the ADC and getting 1999 out of 2010 object to sync with AD.
After the installation of the Exchange 2k3 server I ran some "move mailbox" tests that appeared to have worked just fine. However, when I send an email to the moved mailbox from an email account that still resides on any of the Exch5.5 servers it is returned undeliverable with message:
The following recipient(s) could not be reached:
mailtest2 on 4/10/2007 11:42 AM
A required directory operation was unsuccessful
The MTS-ID of the original message is: c=US;a= ;p=Shared Technolog;l=DFWEX02-070410164223Z-12023
It appears that the Exchange 2k3 Server has installed itself as a Front End Server instead of pointing to the existing Exchange 5.5 IMC. I used the Microsoft Exchange Troubleshooting assistant to confirm the Exchange 2k3 server's status as a front end server. When I open the Microsoft Exchange Administrator for Exchange 5.5, the new Exchange 2k3 server is not listed but I know it's part of the site because in Exchange System Manager all the servers in the site show up, both Exch5.5 and Exch2k3.
How can I correct this? I need to be able to start moving mailboxes to the new server without interupting internal and external mail flow production.