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 PollingInterval registry key is present and configured with a value greater than 300, a non-default configuration message is displayed.

The PollingInterval registry entry is a custom configuration setting for Exchange Server that helps control the frequency of link state traffic among routing groups, specifically to and from the routing group master within a routing group. Increasing this setting will prevent connections from failing, but it may prevent you from addressing the larger issue of slow links between members of a routing group.

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 PollingInterval 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" (