Incredimail not connecting to Comcast

Hi, I've had Incredimail and Comcast for over a year now and have not had this problem before. I get an error message when I start Incredimail and it tries to get my mail from Comcast server. Here is the error message:

Socket Error: 10060 , Port: 25, Protocol: SMTP.A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.

I know I'm connected because I'm writing to you so what might be the problem?