Re: [Asrg] Turing Test ...

On Thursday, Apr 3, 2003, at 17:06 Europe/London, Hallam-Baker, Phillip 
wrote:
> > > 1) How do I distinguish the messages from these robots from spam?
> > >         A lot of them advertise these horrible services.
> > Use a VERP. Another robot should reply to the VERP, whereas a human
> > should reply to the Reply-To.
> Please explain
OK. But first let me say I hate C/R solutions, so I almost want to not 
explain and let you continue believing they can't work ;-)
The C/R system sends a challenge with a return address of 
"cr-respond-bounce(_at_)server(_dot_)com" or something, but a reply-to field of 
"cr-respond-unique-id(_at_)server(_dot_)com".
If two C/R systems start communicating it stops quickly because the cr 
bounce handler gets it. The challenge goes into the originators 
"pending validation" folder, so in order to validate the original he 
has to find it in that folder. Eventually if everyone uses C/R you 
might as well have your "pending validation" folder become your inbox.
Ah, I think I've just proved the point that these systems are 
fundamentally broken in the large scale. Excellent ;-)
Matt.

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