Question : Outlook 2003 is disconnected through VPN

Server: Windows Server 2003 Small Business Server
Client PC: Windows XP SP2 running Office 2003 with all M$ updates.
VPN Connection: Two Linksys RV042 VPN routers connecting to each other (Static IP to Static IP)

The client PC is connecting to the server over the VPN. Sometimes when he opens Outlook it shows the status as "Disconnected". Outlook is running in cached mode and needs to continue running in cached mode. Other users at the same site are able to access the server just fine. He can ping the server and browse to it via network places.

If I restart the Information Store on the exchange server he is able to connect again instantly.

Steps taken:
- Found an article that a M$ patch limited the TCP connections from 50 to 10. Ran another patch to allow 50 connections again.
- Added the local IP and server name to the Hosts file.
- Updated NIC drivers
- Adjusted MTU settings in the router

Thoughts?

Answer : Outlook 2003 is disconnected through VPN

do you 9646 events for this user in your event viewer?
is this sbs server windows 2003 sp2?
if yes to the above, see here
http://msexchangeteam.com/archive/2007/07/18/446400.aspx

and at minimum, start by doing the netsh command to disable the tcp chimney

kris.