http://blogs.iis.net/bretb/archive/2008/03/27/How-to-Use-DelegConfig.aspx
The Tool to Make Sense of it All
Brian Booth, a Support Escalation Engineer for IIS at Microsoft, created an ASP.NET Application that will run some key checks on the client, server, and back end server to identify problem areas for kerberos delegation. The following link will allow you to download the ASP.NET application that helps identify which common symptoms and Root causes you may be running into when attempting to configure an IIS Server to delegate credentials from the client to a back end server.
http://www.iis.net/downloads/default.aspx?tabid=34&g=6&i=1434
