Exchange Unified Messaging Routing Application did not find any Exchange UM servers. Cause: No Exchange UM servers are configured ...

Exchange Unified Messaging Routing Application did not find any Exchange UM servers.

Cause: No Exchange UM servers are configured for SIP traffic or the RTCSRV service account does not have permission to read Exchange objects in Active Directory.
Resolution:
Configure one or more Exchange UM servers to handle SIP traffic.