spf-discuss
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Re[2]: SPF + Challenge/Response

2004-01-13 07:07:29
Hi Wayne,

w> Secondly, by sending a challenge to a spammer, you are confirming your
w> email address as being live.  This is a good reason to *not* use a C/R
w> system.

Yes - except that you already confirmed your email address to the
spammer when you accepted their email in the 1st place, so doing so
again via a challenge makes little difference - and of course -
there's nothing to say that you shouldn't obfuscate your email address
within the challenge if you like.

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