RPC errors encountered when attempting to start/stop mail or other Quest agents on a source Excha (4281187)

RPC errors encountered when attempting to start/stop mail or other Quest migration agents on a source Exchange server.

All name resolution and network connectivity problems have been ruled out.   What else could cause this behaviour?

If a source Exchange server's computer account has been migrated to the target domain using a QMM migration session, there will be a disabled computer account in the target domain with the same name as the source Exchange server.

This may cause issues when attempting to connect to the source Exchange server via RPC.

Please delete the disabled computer object representing the source Exchange server from the target Active Directory.