I have several telecommuters using the Cisco VPN client to attach to our network via a PIX 515. Although the VPN connection will remain solid they either cannot access the Windows 2003 Server / Exchange at all ("Exchange server is offline or not responding") or they can attach it but then lose the connection after some time. They will also lose mapped drives to this same server periodically although the VPN remains connected. This is a sporadic problem, they can attach Outlook and map drives approx. 75% of the time. I am using the FQDN in the Outlook setup and the "Check Names" button typically returns the underline. Thanks.