I have stumbled upon a possible DNS issue (well I think it is)
Our Mac users here use Entourage to connect to exchange, just over the last couple of days I've had a random number of people report that they loose connection. Their entourage is setup to connect to the exchange box via its host name riverexch but it seems to be failing to connect using this method. If I enter the webmail address instead it connects fine. Also they are unable to connect to the Mac server using rivermacserv but can connect to it using it's IP address.
Can you please give me some indication of what I need to look for to resolve, assuming it's something on the domain controller that servers as DNS, DHCP etc.