Dynamic DNS and/or port forwarding? My ISP blocks port 80 inbound and port 25 outbound, like most ISPs.. I just forward a different port to port 80 and hand out the URL with the port number in it. If your site truly isn't commercial as you say, there's no harm throwing a port number on there.. (ex. http://www.yoursite.dyndns.org:30/) and then forward 30 to 80 or have your web server answer on 30.