Question : Outlook login prompt

After demoting a DC on our network to a member server
Some users have been receiving an outlook login prompt when opening Outlook.
The DC that was demoted hosts our Exchange server.
Server in Question is Win Serv 2003, Exchange 2003.

Regards,
Antonio

Answer : Outlook login prompt

Is the other DC (I assume you have at least one ;) ) not having DNS or AD-troubles? Did you check the logs on that server?