Outlook clients can't authenticate to Exchange 2000 server, but logged onto domain

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From: allisa (allisahui_at_yahoo.com)
Date: 06/08/04 

Date: Mon, 7 Jun 2004 23:18:45 -0700

This is a weird one. Has anyone ever experienced this?

I have Exchange 2000 server running. Suddenly this morning, NONE of the
outlook clients (Outlook 2000 and XP) from all workstation are able to logon
to the Exchange server. The logon box keeps popping up like you're not
authenticated to the domain. When I manually enter the the user id,
password, and domain info this is the error message I get: "Your logon
information was incorrect. Check your username and domain, then type your
password again..."

However, I am already successfully logged onto the domain and am able to
access all network resources, except Exchange.

So I'm thinking that maybe it a MAPI issue. However, I am able to go to a
workstation, logon as the administrator, create a outlook profile, and am
able to access the mailbox with no authentication issues. But if I logon as
another user on the same workstation, I can't successfully authentication
with Outlook.

It seems like a permission issue, so I even tried giving a user as a member
of the admins group, but that didn't help.

Virus scan also comes clean.

Any suggestions? Would sure appreciate it.

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