Exchange server 2010 Temp.que file growing


  • We have a exchange server 2010 that is on a Small business server 2011. 

    We are experiencing that we have a file on this path: C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\data\Temp

    Are growing really fast suddenly and when we restart the "Microsoft exchange transport" service it appears to disappear. 

    Any idea how to stop it from growing from time to time? 

    Wednesday, November 1, 2017 2:40 PM

All replies

  • Hi.

    Fist of all restart services and check log.

    net stop MSExchangeTransport && net start MSExchangeTransport

    Check log.

    If not help restart services on your Exchange services.

    1. Stop transport services . net stop MSExchangeTransport or from services

    2. move all file from Temp to other temporary folder

    3. run transport services net start MSExchangeTransport or from services

    This is data file automatically create when run services.

    Exchange hub transport “Mail.que” file large in size

    PS. Sometime this is problem with hardware, maybe you have bad cluster on your disk drive.

    You can move transport DB to any other disk drive on this server.

    Change the Location of the Queue Database

    MCITP, MCSE. Regards, Oleg

    Wednesday, November 1, 2017 7:01 PM
  • The file is named Cts 1CB1CDE5.temp 

    And not mail.que 

    It starts growing randomly and its very large all of a sudden any idea why?

    Thursday, November 2, 2017 12:40 PM
  • This is same situation, but for Exchange 2013.

    Exchange 2013 TransportRoles\Data\Temp filling up disk 

    Temp folder is one location for transport services. When Server very quickly shutdown, Exchange use this folder for save temporary transport date.  

    Sometime, Transport Services use this folder for cache files, when low level memory on the server for Transport Services (Antivirus, Transport Filter or Rule)

    MCITP, MCSE. Regards, Oleg

    Thursday, November 2, 2017 1:14 PM
  • Hi,

    Thanks for contacting our forum. The directory is used for content conversion in the transport pipeline, they are safe to delete even if the message is still in the transport queue.

    We can stopped the Transport Services, renamed the temp folder (temp.old), restarted the services, and then copy the temp.old folder to an external, then deleted the folder out of the directory.

    We can also check the event log to see if any backpressure related events and it’s also recommended to improve the event log level of transport service and check if any related errors.

    Hope it helps.


    Jason Chao

    Please remember to mark the replies as answers if they helped.
    If you have feedback for TechNet Subscriber Support, contact

    Monday, November 13, 2017 10:06 AM
  • Hi,

    We haven't heard back from you yet, and I'm just writing  to see if you have had an opportunity to try the suggestions I provided. If it helps, please help to mark as answer. Any further questions, please feel free to post back.



    Jason Chao

    Please remember to mark the replies as answers if they helped.
    If you have feedback for TechNet Subscriber Support, contact

    Tuesday, November 21, 2017 9:55 AM