ad> Even worse, there is no proven connection between the spam and the
ad> hotmail/yahoo account which is allegedly the sender. The data are
ad> entirely consistent with spammers using lists of verified email
ad> addresses to forge 'From:' lines.
vs> That would be make sense only if the number of hotmail/yahoo spam
vs> sender addresses were proportional to the number of hotmail/yahoo
vs> addresses among all targets of spam.
Vernon,
Wouldn't this objection only apply if you assume that spammers are
selecting MAIL FROM: addresses uniformly? That is, if you assume each
address in their lists is given equal probability?
Do spammers who do forge prefer to send MAIL FROM: big free targets,
no-name targets, or have no preference? I honestly don't know the
answer to this one, but anecdotally I suspect they prefer to hit the
big-name targets.
Mike
_______________________________________________
Asrg mailing list
Asrg(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/asrg