should be pop.googlemail.com ensure you have it on port 995 and SSL if you have the option
outgoing (depending on your isp) should be either your isp smtp server or
smtp.googlemail.com port 587 with TLS
Hm. Not sure what the problem is then... maybe gmail's server was borked? Has it NEVER worked-- incoming mail, I mean? Odd that you'd have no issues sending mail, just receiving. If ever I had problems it was the inverse of that.