I have been trying to publish OWA. We have a single Exchange 2007 server, running on Server2003, behind an ISA firewall, also on a 2003 server, which is behind a Cisco 857 ADSL router.
The OWA site works perfectly if I browse to it from the ISA server using the internal address. If I try to use the external site though, I get the log on page, but when I enter my username and password I get a Page cannot be displayed mesage with the following technical information: "Error Code: 403 Forbidden. The server denied the specified Uniform Resource Locator (URL). Contact the server administrator. (12202)"
If I try to log on using incorrect credentials though, I get the proper message telling me that the credentials were incorrect, which suggests that somewhere along the line the credentials are being proplerly verified, but why can't I get to the actual application?
I've tried different authentication methids and fiddled with the internal and external URLs, but everything I do gets the same problem.
I've also tried to publish Outlook Anywhere but that isn't working either. It asks me for credentials when I open outlook, and again, if I type incorrect ones it doesn't accept them, but if I type correct ones it just sits there for a while saying 'trying to connect to exchange', before going back to 'Disconnected'
I've been searching the web, wracking my brain, and running round in circles for days on this, please can someone help!