Comcast blocking port 25? (not what you think)

[Brian]

On Mon, 2004-05-10 at 11:20, Travis Roy wrote:
> Okay.. for the -LAST TIME- my parents are -NOT- I repeat are -NOT- 
> running any kind of sever at all, NONE! They are trying to connect to MY 
> server that is NOT on the comcast network to send mail.

(maybe it's already bee covered?)

Why don't they just use Comcasts provided SMTP server?  What is the real
benefit of having them send through your server?