Exchange 2000 Connectivity Problem Through VPN

From: Ray Miller (RayMiller_at_discussions.microsoft.com)
Date: 12/20/04


Date: Mon, 20 Dec 2004 05:21:02 -0800

Greetings and Happy Holidays, hopefully some of you geniuses out there can
help me out.

I am running an Exchange 2000 Server environment with remote connectivity
via a Cisco VPN Concentrator. All of my users can connect to the VPN server
fine, all can see the network shares, send and recieve files and printers
fine.

However, about 10 percent of my users can not use Excahnge via Outlook 2002.
They can ping the server, but it constantly prompts them to authenticate.
About half the users are using laptops that have joined the domain and have
no issues locally. When they login in via the VPN that credentials are
accepted with no problems for all services except Exchange.

We have used both the Cisco Clients and MS Clients to test resolutions with
no progress. The test case user has a DLINK 254 Wireless Router and a DSL
connection. His laptop works remotely when connected to a different ISP and
DIfferent Router (LinkSys) with no config changes on the client. But not at
his usual remote office. Again, this user see all network resources and has
no problem with pass through authentication except for Exchange.

Any and all constructive comments are appreciated. I look forward to the
communities thoughts on this issue.

If there is any more information required to assist in solving this puzzle
please let me know.



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