My network consists of one domain, two domain controllers that also run dns, one exchange 2003 enterprise sever. One of my domain controllers is down. This one also happened to be the global catalog server. Although users can log onto their workstations their microsoft outlook clients are failing on authentication. I also checked the services on the exchange server and the exchange server server is not started. In the event log it states the global catalog server cannot be found. Can a windows 2003 domain have more than one global catalog server? If yes, how can i set this up?