Exchange 2K3 and Outlook 2K not authenticating

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    RocJoc
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    #98625

    Hi All, just went to Exch 2K3 a while back, and finally got all the clients (Outlook 2K) to play nice with the new box. Just yesterday, the clients started coming up with the username/password/domain box upon opening Outlook, but their setting are to use NT Authentication. (I know this happens when you select “None”). No changes were made to the Exch box or the clients, and even when the client fills in the dialog box with the correct information, it still won’t log them on to Exchange. I’m thinking either a DNS or AD problem, ie. the Exchange box is no longer talking to the DC, but again, no changes were made, and I don’t know how to verify correct comms with AD – DNS is still set with the correct IP for the A and MX records. Any thoughts? TIA,
    Rocjoc

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