It is still a name resolution issue.

Is the NetBIOS name of the server resolved at the command prompt or the
FQDN?
Is the workstation a member of the windows domain?
Are the TCP/IP settings identical to the other workstations that connect?

"David Farmer" wrote in message
...
I've just set up a new Windows SBS 2003 R2 server and have installed
OUtlook
2003 on all the PCs. One of the PCs (Win XP SP2) will not connect to the
exchange server giving the message;-

“The name could not be resolved. The connection to the Microsoft Exchange
Server is unavailable. Outlook must be on line or connected to complete
this
action.”

All other PCs work fine. The affected PC can resolve the server name at
the
command prompt, can ping the server and I can telnet to port 25 on the
exchange server. The user has full local administrator rights on the PC. I
have tried removing and re-installing Outlook but the problem persists.
Any
ideas.