Cannot Exchange 2000 mailbox from remote vpn connection

[C C]

Hello.

I desperately need help solve my problem.

I have been connecting to our office LAN (with W2K servers/domain
controllers and Exchange2K e-mail server) using a vpn connection (Cisco
ipsec vpn client to Cisco 3000 Concentrator) on a DSL connection at home. I
have configured the Cisco vpn client in my home PC I use for connecting to
our work LAN to establish the vpn tunnel prior I log on to the Domain. This
PC is a member of our Office Domain. I have had no problem whatsoever. I
use MS Outlook 2000 to connect to our Exchange2k server, I use Terminal
Services client to log in to our Web Servers, Domain controllers, SQL
servers, etc. I use VNC to control my workstation at work, when I need to.

Yesterday, I upgraded my motherboard to a newer one which can take higher
speed processor and memory (with FSB). After installing all the drivers for
all components of the new motherboard (sound, integrated LAN card, USB 2
driver, Chipset drivers, etc), I look at the device manager and everything
is fine - no yellow exclamation or question marks. All components are
working properly. I still have vpn access to our Cisco 3000 concentrator
and I'm authenticated by our Win2k domain controller. However, I cannot
open my mapped network drives, Outlook does not open my mailbox (no error
message - it just sits there with the "Not responding" in the Task Manager,
I have to End-Task it), TS cannot connect anymore, VNC client cannot connect
anymore, etc. I know TCP/IP and the tunnel is working properly because I
can telnet over to our IBM Aix system.

What seems to be my problem. Thanks in advance for your help.

 

[Gerry Voras]

I would be willing to bet that the VPN connectoid or the DSL connection
itself is not totally configured right. The first thing I'd check is all
the relevant DNS settings with your company's sysadmin.

Tell me, can you successfully browse the internet (say, hit
www.microsoft.com) both on and off the VPN? Or did you just telnet to your
aix box using an IP address only?

 

[C C]

Yes! I can successfully browse the Internet with/without vpn.

I disabled the network card and using a modem, dialed into our RAS server
and I can do everything: Open my mailbox in Outlook, TS over to our W2K
servers, use VNC to remote-control my work Workstation, etc.

While the onboard NIC is disabled, I re-installed the Linksys NIC that I
used in the old motherboard thinking that bindings were on the NIC. No
success.

Another thing I want to try next is dial into an ISP and vpn over. See if
everything works with the ISP connection.

Thanks Gerry for your reply. Anything else you can think of other than to
remove all networking components from my PC and re-install?\

 

[Gerry Voras]

If you can hit the internet over the vpn, plus access additional internal
resources over the vpn, then the problem is likely in the way you're trying
to connect to the AIX box. Again, I recommend you try to telnet into it
with just the IP address. This will tell you whether or not there is a DNS
problem across the VPN connection.

I do not belive that you have to remove any networking components from your
PC.