[GRLUG] new Comcast mail blocking?

[Collin Kidder]

John-Thomas Richards wrote:
> Am I correct in assuming that Comcast is blocking me from connecting to
> a specific port elsewhere?
>   

Yes, why wouldn't that be the way they'd block things? Their whole point 
is to prevent botnets from being able to send spam. You send from a 
random port but you need to connect to port 25 to send mail to an 
external network. And so they block you from sending to port 25 so that 
nobody can easily spam from your IP or any other IP on their network. If 
you control both ends of the link then you can feel free to change the 
port # to something (like you did to send the above message.)

Personally, I still don't agree with wholesale port blocking for 
everybody but I'm not an administrator at Comcast so I get no say at all.