Routing all mail through comcast

[dmorin at lear.morinfamily.com (Duane Morin)]

I'm getting tired of having my mail blocked just because my server runs 
through my cable modem.  I've been adding the lines to my 
/etc/postfix/transport file to redirect through smtp.comcast.net as this 
happens, but it's annoying.  Is there a way to just set myself up to route 
all my outgoing mail through comcasts server?

Duane