LS Exchange Unified Messaging
Event ID: 44028
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.
Go to UM Dial Plan Properties and change VoIP Security.
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