No Outlook through VPN on DLink Router

[n2edi]

VPN connects successfully, and I have access to all network shares, etc. However, no Outlook. It will bring up the title window, then hang. I can successfully ping the exchange server, but Outlook won't open. When connected directly through modem, no problems - only through router.

Symantec VPN 7.0.1 client
D-Link DI-604 Router

I've messed with opening all ports and IPs from/to WAN, etc, tried operating in DMZ mode, but still no luck. Any suggestions will be greatly appreciated.

 

[tattl]

Can you ping the mail server using the server name? If not you might want to use a hosts file on the machine with the VPN client. The Outlook client uses computer names.