Yesterday I did some cleanups and move mailboxes to the new databases I created. I think created Mailbox Copies (More on how to do this: http://technet.microsoft.com/en-us/library/dd335158(v=exchg.150).aspx).
In the event log I started to receive the following warning:
“RPC request to the Microsoft Exchange Information Store service for log truncation failed for database (DB Name). Error: Failed to notify source server ‘Server Name’ about the local truncation point. Hresult: 0xc8000713. Error: Unable to find the file.”
This warning will clear with the next full backup of the Database and when all the log files are truncated.
Hope it helps