We have a L2L VPN tunnel that keeps going down - our Exchange 2010 Server is hosted across the tunnel. I am wondering how to force Outlook 2007 to connect via HTTP or HTTPS to the Exchange Server at all times so that this is never an issue. The Exchange server is exposed to the Internet on ports 25, 80, and 443. OWA works when the L2L tunnel is down.
Note that I have already done the "Fast, Slow connections use OWA" trick.