Topic Last Modified: 2007-11-14

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine its current value:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeMTA\Parameters\Transport threads

If the Exchange Server Analyzer finds the value for Transport threads present and set to anything other than 1, a non-default configuration message is displayed.

The Transport threads value is the number of message transfer agent (MTA) Transport threads. The default value of 1 is generally sufficient for all organizations. Unless directed to do so by Microsoft Product Support Services, you should leave this value set at 1.

This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore the registry if a problem occurs. For information about how to restore the registry, view the "Restore the Registry" Help topic in Regedit.exe or Regedt32.exe.

To configure the Transport threads value

  1. Open a registry editor, such as Regedit.exe or Regedt32.exe.

  2. Navigate to: HKLM\System\CurrentControlSet\Services\MSExchangeMTA\Parameters

  3. In the right pane, locate and double-click the Transport threads value.

  4. In the Value data field, enter 1 and click OK.

  5. Close the registry editor and then restart the Microsoft Exchange MTA Stacks service for the change to take effect.

Before you edit the registry, and for information about how to edit the registry, see the Microsoft Knowledge Base article 256986, "Description of the Microsoft Windows Registry" (