The UM mailbox policy with ID '{0}' assigned to user '{1}' wasn't found. If the policy was created recently, this may have occurred due to replication latency between Active Directory domain controllers. Retry the operation in a few minutes.
The UM IP gateway address specified does not correspond to any accepted domain configured for the organization. For example, ...
The UM IP gateway couldn't be found because the certificate presented by the remote peer isn't valid. Certificate thumbprint: ...
The UM IP gateway or host "%1" resolves to an invalid FQDN. Please check your UM IP gateway and DNS server configuration. ...
The UM mailbox policy assigned to the mailbox in the source forest couldn't be mapped to a UM mailbox policy in the target ...
The UM mailbox policy with ID '{0}' assigned to user '{1}' wasn't found. If the policy was created recently, this may have ...
The UM mailbox with Identity '{0}' is a legacy mailbox. You need to run this command from a Windows PowerShell window that's ...
The UM Partner Message Assistant failed to deliver message '%1' for the mailbox '%2' because the Microsoft Exchange Unified ...
The UM Partner Message Assistant failed to process a message. This is a permanent error. The message will not be delivered. ...
The UM worker process (UMWorkerProcess.exe) encountered an unhandled exception "%1" during an incoming call with ID "%2". ...