I am running Exchange server 5.5 and Outlook 2000 as my client. About 1 month ago my ability to login to the Exchange server from home (high speed cable going thru a cable router) ceased. There are no problems connecting on the internal network. I have tried creating a new profile using the ip address and still cannot connect to the server. We have checked to make sure no ports are being blocked by the ISP. Any ideas where I should start troubleshooting? Thx, Nigel