I have a client with SBS2003 and Exchange. One of their part time employees uses Outlook with POP3 client since he works off-site 90% of the time. I set up his account on the Exchange so that he get his email and that works fine.
The problem is that when he comes onsite, his pop does not work since he is in the building now. Is there a way for him to get his email off the Exchange using the POP?