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Exchange 2003 not accpting client credentials via Outlook 2003.

Posted on 2007-07-31
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I have a WAN running 9 DC and 1 Exchange 2003 Svr.  The servers are all running Windows 2003 Std Ed, some with and some without SP1 on them.  I have one Exchange 2003 Std Ed SP2 running.  Exchange appears to be working without a problem.  It is collecting, sending and passing email.  All services are running and all stores are mounting etc.  Some of the servers are communicating with Exchange via a VPN tunnel.  The tunnels are up and servers on either side of the tunnel are working.  I've checked and all servers and workstations in question can communicate (ping) the Exchange server properly.

My question is this: At a few of the remote branches (not all of them) when the users login to the domain and they launch Outlook 2003, they are prompted for there username and password.  Even with correct information and the correct format, they are unable to connect to Exchange.  This isn't happening at all branches and is not happening on the LAN where the Exch. svr is located.

I've never seen this before, so I thought I would send it to the best of the best.

Javas
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Question by:jvandeway
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by:peakpeak
ID: 19603500
Bet it's timeout, slow connection. Look into it
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by:Hypercat (Deb)
ID: 19603577
First thing I'd do is the simplest - check the Outlook profile security settings to make sure that the little checkbox that says "always prompt for user name and password" is not checked. Also on the same tab be sure that Kerberos/NTLM authentication is selected (not just Kerberos).  These are both on the Advanced tab in the "More Settings" dialog box in the properties of the profile.

Another thing to check is to make sure there aren't any old cached passwords that are interfering with the authentication.  To do this, you have to make the user a local administrator temporarily if they are not already, then go to Control Panel/User Accounts, click the Advanced tab, and then click the Manage Passwords button.  If there are any passwords stored here, delete them.
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by:peakpeak
ID: 19603718
Cached passwords are not the issue. Cached credentials are. Remove all temporary items and restart
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by:jvandeway
ID: 19603846
the settings in outlook are correct.  there were no saved passwords.  i cleared out temporary items, all to no avail.  i ran a ping test over the wan to the exchange server, it is responding at 153ms, from our farthest office.  so i don't think response time is the issue.

it acts like it isn't passing network authentication information on to the exchange server, at least that is how its behaving, but it is logging into the domain fine.
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by:peakpeak
ID: 19603875
Repeating: I'd Luve to see this myself !!!
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by:Hypercat (Deb)
ID: 19603882
Try creating a new Outlook profile for the affected user(s) and see if that resolves the situation. Does this affect all of the users at a particular location, or just some of them?
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by:peakpeak
ID: 19603906
on location I'd put in a sniffer .... (solved in like 3 mins)
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by:peakpeak
ID: 19603966
did you Javas?
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Author Comment

by:jvandeway
ID: 19603997
I will try the new profile.  It is effecting all users at a specific location.  Each location has a domain controller the replicates back to the main dc or gc at the main office.  the really wierd part is, i can access any of the effected mail boxes via OWA from outside of the network, or from the exchange server itself.  and its gets better, i can also access OWA from the dc at a branch where users are unable to use either owa or outlook from there desktop.
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by:sparkofgenius
ID: 19604716
do each of your offices have some kind of corporate firewall i.e. ISA Server. Is it possible that your firewall could be preventing the authentication details reaching your exchange server? remember that by design ISA blocks everything and you must create a rules to allow access in and out. if you are running isa or an equivalent then it may be necessary to create a new access rule to allow connection from the internal network to the exchange server.

hope this helps
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Author Comment

by:jvandeway
ID: 19609602
i have found the source of the problem.  it turned out to be much larget then anticipatd.  the group policy file became corrupted across the servers. so i had to create a new group policy.  then we realized that we were experiencing some replication issues.  once all of these are fixed then we should have outlook working.  turns out nothing is wrong with exchange at all. LOL
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