A fatal MTA database server error was encountered. An object was not locked when expected. [ ] (16)

Details
Product: Exchange
Event ID: 2105
Source: MSExchangeMTA
Version: 6.5.6940.0
Component: Microsoft Exchange Message Transfer Agent
Message: A fatal MTA database server error was encountered. An object was not locked when expected. [<value> <value> <value> <value> <value>] (16)
   
Explanation

The message transfer agent (MTA) encountered an internal processing error while processing a message or report object. This indicates a logic error or database integrity failure.

   
User Action

Stop and restart the MTA service. If the error persists, run the Mtacheck.exe utility. Stop the MTA service, open a command prompt, and type Mtacheck/v /f c:\mta.txt.

If Mtacheck removes objects from a database queue, it places each damaged object in a Db*.dat file in \Exchsrvr\Mtadata\Mtacheck.out. Check your drives and verify that core *.dat files are in the \Exchsrvr\Mtadata directories. The \Exchsrvr\Mtadata directory with *.dat files may be on more than one drive. Contact Microsoft Product Support Services for assistance.

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