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How to Disable Throttling in Microsoft Exchange Server 2007

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This article refers to the Barracuda Message Archiver release 4.0 or higher, and Microsoft Exchange Server 2007.

Microsoft Exchange Server 2007 RPC client throttling is enabled by default and allows Exchange to restrict the number of processed messages. If you wish to disable throttling, you can do so through the RPC Throttling Factor Registry. For more information, see the Microsoft TechNet Article Understanding Client Throttling.

Use the following steps to disable throttling in Exchange Server 2007:

  1. Log in to the Exchange Server as the administrator, and run regedit to open the Registry Editor.
  2. Browse to the following location:
    HKLM\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
  3. Double-click the DWORD key RPC Throttling Factor, and change the value to 0; if the key is not present, right-click and create a new DWORD called RPC Throttling Factor.
  4. Close the Registry Editor.

throttle