In your email client, you need to enter "pop.gmail.com" and Port 995 for incoming mail, which comes through the POP3 server. For outgoing mail, you need to enter "smtp.gmail.com" and Port 587, or ...

Since I am using a small LAN and I want to have all of my POP3 e-mail boxes on the same machine that I use as my e-mail server, I entered the IP address of that workstation in every POP3 Hosts box.