I have a new client with a SBS 2003 server running exchange 2003. Clients are Windows XPPro with office 2003. In the office wired or wireless all works well. From each users home all users VPn in and outlook connect to exchange OK and users see the company files on a mapped drive. Users also heve 3G dongles and these connect OK.
Occasionally a user will be abroad in a hotel on a wireless network and are able to connect via the vpn.However they cannot get mail or see the company shared drive. If they disconnect and use a 3g dongle all works fine. This is not just limited to hotels it can be any wireless network some free access some not.
Any advice/thoughts would be great as this one has me stumped due the ramdomness