The Microsoft Exchange Unified Messaging service on the Mailbox server received "{0}" request with an invalid SIP header "{1}" with value "{2}".
The Microsoft Exchange Unified Messaging service on the Mailbox server is initiating an outgoing call. The calling party ...
The Microsoft Exchange Unified Messaging service on the Mailbox server is sending this %1 in response to the Test-UMConnectivity ...
The Microsoft Exchange Unified Messaging service on the Mailbox server is trying to locate a UM IP gateway in Active Directory ...
The Microsoft Exchange Unified Messaging service on the Mailbox server isn't currently enabled. The Unified Messaging service ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received "{0}" request with an invalid SIP header ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received a direct call with ID "%1" for the SIP URI ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received a diverted call with ID "%1" for the SIP ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received a diverted call with ID "%3" for extension ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received a Find-Me outbound call request from user ...