I have three computers that will not connect to a SBS 2003 Server using the HTTP Proxy. I have a valid SSL and tested it against OWA which works fine, no certificate errors. Because the three computers won't connect it apppears the problem is on the server and not with Outlook. Clients are using Outlook 2003 and 2007. Server is Exchange 2003 SP2
I notice in exchange I do not have the option to select RPC-HTTP front end server. Is this why clients can't connect Outlook to Exchange over the internet?