Permanent Redirect

We currently have 2 domains for our marketing campaign.  A "shortcut" and the "real" URL.  In IIS6, I have the shortcut set up to permanently redirect to the real URL.  This was working perfectly before SF40.  Now, when it redirects, to the SF site, we get a bizarre result:

www.domainname.com/eurl.axd/be477394021e5746a3eca14bc3f8ed4c/
(Page cannot be found page displayed as a result)

Is there something I should be configuring in the web.config?  Do I need to add a page extension?  It's a simple, URL, redirect - root to root  - so I am not sure what the trouble could be, any help would be greatly appreciated.

Hello Allen,

The error seems to be a generic IIS issue - could you please make sure that Asp.Net can access the application? Also can you verify you have made all the necessary handler ( wildcard isapi dll also ) mappings set up properly.

Greetings,
Victor Velev
the Telerik team