full-disclosure - Strange Emails -- What are they?

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Message-ID: <EKECJMGPAACGOMIGLJJDCELGHEAA.geoincidents@nls.net>
Date: Wed Jun  7 16:33:23 2006
From: geoincidents at nls.net (Geo.)
Subject: Strange Emails -- What are they?

> Alright,
>     If this is spam/email harvesting then please explain how it is
> working without any legitimate return path? I understand blasting out
> bunk emails with a legit return path, but these emails have no such
> path. Whats the ditty?

When you try and send email to a non-existant address, the receiving server
rejects during the smtp transaction so a return address is not needed since
the sending bot gets this error message before the transaction is completed.

Geo.