On 07/21/2014 12:34 AM, Mike Hearn wrote:
Tor provides exit policies to let exit relay operators restrict traffic they consider to be unwanted or abusive. In this way a kind of international group consensus emerges about what is and is not acceptable usage of Tor. For instance, SMTP out is widely restricted.
As Andrea said, the exit policies are there mostly to have a small knob to stop complaints.
In that sense, participation as a hidden service is "opt-in": You're willing to lose the ability to use IP address as a rough method of identifying users.
A network provider should in an ideal world _never_ [be able to] interfere with any of the traffic they transport. I already feel very uncomfortable limiting "arbitrary" destinations based on IP and port. A network provider is a neutral channel. Remember, data payload is just protocol overhead.