Is there something different that needs to be done on the ISA server facing the Internet to Publish OWA? I have it working from the DMZ just fine but when I duplicate the same setup on my Outside ISA server I get the following error: 403 Forbidden - The server denies the specified Uniform Resource Locator (URL). Contact the server administrator. (12202) Internet Security and Acceleration Server I put up a test website just to make sure I have listeners, etc configured correctly and it works fine. Any help is appreciated. Thank you. Steve