On Fri, 7 Mar 2003, Keith Moore wrote:
On the other hand, I think the odds are low that a spammer can maintain a
return address that actually functions long enough to reply to a
significant number of whitelist confirmations.
so this amounts to yet another heuristic for identifying possible spammers -
if they can't respond to a challenge, they're not stable enough to bother
with. not a perfectly reliable indication, but perhaps still useful?
That is basically how I viewed this system in the first place, so yeah, I
think it's useful. :-)
Put another way, there is a pretty high correlation between people I want
to correspond with and people who can and do monitor responses to their
messages. There is an even higher correlation between people I don't want
to hear from and people who can't or don't monitor the responses to what
they send.
--
Nate Waddoups
Redmond WA USA
http://www.natew.com
_______________________________________________
Asrg mailing list
Asrg(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/asrg