I am using a SBS 2008 based server and am trying to configure Outlook Anywhere to work outside the LAN. Currently, I have port 80 and 443 forwarded to the server. I checked to make sure the RPC over HTTP protocol was installed - and it is. I can work with Exchange all day long on the LAN (over TCP/IP), but am still unable to connect from WAN side. I have configured the Outlook 2003 client on this system to "Connect to my Exchange server using HTTP" and have configured our external IP address (static BTW) as the proxy server in the settings dialog. Does the server have to have a CNAME on our internet domain forwarded to it? Is there something I am missing here?