I feel like I am missing something simple.
I replaced a server running an inexpensive mail server program with a new Windows 2008 server with MS Exchange 2007. The only thing that is not working os OWA. I can access OWA with no problems from the network. When I try to access it from outside, however, I get the "Page cannont be displayed" error.
I have reviewed the PIX firewall settings and we have both ports 80 and 443 open and directed to the Exchange server. Is there something on the Exchange server that needs to be changed to permit access from off the network?