Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine whether Simple Mail Transfer Protocol (SMTP) connector routing logic has been modified from its default setting:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\RESvc\Parameters\BestAddressMatchOnly

If the Exchange Server Analyzer finds that the BestAddressMatchOnly registry key is present and configured with a value greater than 0, a non-default configuration message is displayed.

The BestAddressMatchOnly registry entry is a custom configuration setting for Exchange Server that forces mail sent to a specific domain to be routed through a specific connector, regardless of any existing restrictions.

Important:
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 revert to the default configuration

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

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

  3. Delete the BestAddressMatchOnly registry key.

  4. Close the registry editor.

  5. Restart the IIS Admin Service for the change to take effect.

Before you edit the registry, and for information about how to edit the registry, see Microsoft Knowledge Base article 256986, "Description of the Microsoft Windows Registry" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=256986).