[Nottingham] Challenge-Response systems

Peter Chang Peter.Chang at nottingham.ac.uk
Fri Nov 4 16:44:12 GMT 2005

On Fri, 4 Nov 2005, Michael Erskine wrote:

> On Friday 04 November 2005 16:16, Simon Huggins wrote:
> > I see you didn't answer any of my questions in my previous mail.
> Sorry, could you repeat the questions (as long as they're still relevant :) ).
> > Mailman does it once; to be effective CR systems do it to every mail.
> The system in question (in OP) asks once. The author/user finds it to
> be the most effective technique tried so far.

But the system in question has asked me more than once even though I have
never sent emails directly to it! And no, I don't want to be validated.


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