said by Steve 
: said by Boomerang86 : witness port 25 blocks by many major ISPs.
It's not the same thing: the
reason for blockage matters.
Blocking ports for security purposes (SMTP, NETBIOS)
Blocking ports for ToS enforcement (HTTP on res cable)
Blocking ports to kill yoru competition (VoIP)
These aren't all "equivalent"
I think he ment the blocking of out going port 25 and your isp forceing you to use their email for out going and incoming. Blockig incoming server ports fine but be upfront about it dont claim unlimited then limit me. Blocking out going ports because you dont want some one useing another mail server not fine.
