The Microsoft Exchange Unified Messaging service on the Mailbox server received a diverted call with ID "%1" for the SIP URI "%2", but no UM-enabled mailbox for the corresponding address could be found. Please check the SIP URI and make sure that the corresponding mailbox is enabled for UM and associated with the correct UM dial plan.
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 ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received a Find-Me outbound call request from user ...
The Microsoft Exchange Unified Messaging service on the Mailbox server received a Play on Phone request for UM auto attendant ...