Computer can't access email server or anything internally...

What I thought was something simple is something more.

A user computer that is internal on my network was working fine yesterday.  They claim they made no changes.  The machine does have an IP, is on the network, I can access the admin shares, and they can surf the web.  However, they can't open Outlook to check email nor can they access our share drives on another server.

The computername does have an account on Active Directory.

Even as a test to make sure they weren't logging on as a cache account, I create a new test account on Active Directory and logged on successfully with it.  However, when I tried to check the name on the test account when setting up a new email profile, it as well could not see the server.

So, this isn't a user specific problem, it's a computer problem only on that machine.  Anyone have any ideas??
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CHILINVLNAsked:
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CHILINVLNAuthor Commented:
Taking the PC off the domain and re-adding it, even as a different computer name didn't solve the problem either.

But, replacing the computer did.  :-)

I'm assuming there had to be something wrong in the registry that was preventing it from authenticating correctly.  This machine was from 2002 anyhow, so it was a good excuse to replace.
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prashsaxCommented:
Check if the workstation service is started on this computer.

This service is responsible for authentication while accessing Network Shares.
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rsivanandanCommented:
Or check the 'hosts' file to see if it had an incorrect mapping for your email server.

Cheers,
Rajesh
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CHILINVLNAuthor Commented:
Just checked, and yes, workstation service is started, and the hosts file is also correct.

I can ping and get a reply on the servers it can't access.
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prashsaxCommented:
Have you tried access it using IP address, instead of name.

use \\Server_IP_Address.

Also, in outlook use IP address of your mail server.
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