Outlook 2007 disconnected

[ACC]

We have a SBS2003 server and since yesterday one outlook 2007 user cannot
connect to the exchange. She is logged onto the domain and can access shared
folders, etc but when OL2k7 is launched the network status shows
Disconnected. She can get email via OWA, but cannot turn off Out-of-office
replies.

I can ping the exchange server from the pc and vice versa.

Any ideas, please.

 

[ACC]

Sorted the problem by deleting the exchange account and setting it up again.

Still can't work out why the problem occurred in the first place. Oh well.