CRARUN: Creating a Custom Rule Action

Microsoft Exchange Server rules are evaluated against each message coming into a folder or mailbox. The CRARUN sample application is a client-side rule extension that launches an application on the client. See Installing the CRARUN Launch Application and Running the CRARUN Launch Application.

To install the CRARUN sample application, the installation of the CRARUN sample application needs REGINI.EXE, which is found in the Windows NT Resource Kit. This means that you must first modify the registry manually using the REGEDT32.EXE utility.

To prepare the registry for installing CRARUN

1. Start REGEDT32.EXE.
2. Under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange\Client, create a new key called Custom Actions.
3. Under this Custom Actions key, create a value called Launch and assign to it a value of

   4.0;path\crarun.dll;1;00000101001100

   where path is replaced by the full path name, including the drive letter, to CRARUN.DLL.