My ISP provideder is Comcast.  Using Windows Mail Live I can receive my mail from ISP, but I can not send mail.  Below is the error I'm getting.  any idea what the problem might be?

The connection to the server has failed.

Subject 'Test 8'
Server: 'smtp.comcast.net'
Windows Live Mail Error ID: 0x800CCC0E
Protocol: SMTP
Port: 25
Secure(SSL): Yes
Socket Error: 10060