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:


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

The StateChangeDelay registry entry is a custom configuration setting for Exchange Server that helps control the interval at which connectors are marked as unavailable and the notifications that occur because of connector and server state change. When StateChangeDelay is set to greater than 0, a server can only be marked as available or unavailable one time in each time period that is set by this value.

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 StateChangeDelay 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" (