I am having a problem connecting to our Exchange Server once my VPN tunnel has been created. This is only a problem on my home's wireless router. It works fine on my Verizon Aircard. Once I establish the VPN tunnel, I can browse the Internet without issue and can access network drives. However, I cannot connect to the Exchange Server through Outlook. Outlook cycles through "attempting to connect to Exchange server" and "Disconnected." As I mentioned, if I disconnect from my wireless connection and connect to my Verizon Aircard, I can connect to Exchange server without issue. I have not had access to other wireless networks to know whether it works on other wireless networks. I've read that Outlook / Exchange through a VPN tunnel is sensitive to MTU issues. As I browse the registry, I don't see any MTU values higher than 1500, some settings show 1300. I see that my wireless router has a "fragmentation threshold" setting which is the default of 2346. My wireless card on my laptop has a similar 2346 setting. Could that be related? The WAN status in my wireless router reports an MTU setting of 1500 from my ISP. I have confirmed that IPSEC, PPTP and L2TP are all enabled in my wireless router. Any thoughts on where I go from here? Thank you.
I have this problem too.