Receiving Event ID 5015 & 5016 on Exchange 2010.
The Active Directory topology service could not discover any route to connector (CN=Internet Mail SMTP Connector (Server2003), ....
In the beginning stages of the migration. There is a barracuda spam/virus fw in place. Changed config to point to Exchg 2010 for receiving email. No mail flow at this point.
As I understand it, Exchg2010 can not communicate with Exchg2003.
Any help is appreciated.