SharePoint 2010 and Silverlight

We currently have a Silverlight application which is hosted in a SharePoint 2010 page. The Silverlight app makes web service calls to a another server on our domain, which has a clientaccesspolicy 开发者_如何学运维file in place. We are experiencing cross-domain issues in our production environment.

Users in the farm admin group can use the Silverlight application without any issues. However, all other users recieve the generic cross domain exception when they try to use this app. We have attached Fiddler to the process and noticed that the farm admins are served the clientaccesspolicy file, but that non-admin users are not. In fact, Fiddler does not ever show an attempt to load this file for non-admins.

This only happens in our production environment, which leads me to believe there is a web config or permission setting causing the issue. Unfortunately, I cannot find anything that backs this up.

Has anyone else run into this issue or know if such a setting exists?

See comments above. I had to change the URL to use the full machine name i.e. from webserver/service.svc to webserver.domain.com/service.svc. It solved the problem but doesn't answer the question about why the farm admins could access it. vorrtex's response is the best possible explanation I have seen so far.