XFOR: Using Imsext.dll If the Exchange Server Internet Mail Service Is Used as a Relay Host

The Imsext.dll file that is included in the Microsoft BackOffice Resource Kit enables you to prepend or append text to an Internet message.

If you use the Exchange Server Internet Mail Service as a relay host, you can use this capability. You can append relayed messages if you enable the RerouteViaStore registry value. For additional information about how to enable this value, click the article number below to view the article in the Microsoft Knowledge Base: Additionally, you can enable relaying with the custom routing dynamic-link library (DLL) by clicking to clear the Instead of the table, use this custom routing program check box. The path to the Imsext.dll file should still be displayed.