Hi Experts, ok, here is the situation. With ISPs shutting down Port 25, my little Domino mail server is going to be harder to access if I leave my house (which happens frequently). I have checked, and Domino cannot listen to two ports at the same time for incoming mail (if it could, I would open port 25 and 587 and life would be good). So I asked a couple people and they suggested something that would basically do a port relay. In other words, it would listen to port 587 and send anything that comes through over to port 25 (where my server could pick it up and send it/deliver it appropriately). I did some searching a found one program that would likely work, but is $200 (I would like to keep the cost minimal - ie, free). I was also told that IIS is capable of doing this task, but I have no clue how to set it up to do so. So... my challenge to you guys: is there a good, free port forwarding application out there, or how would I go about setting up IIS (Server 2003 Standard running Domino, which I don't think will affect anything) to listen on port X and forward/relay to port Y of localhost?