Full Disclosure: Re: Strange Emails -- What are they?

[Simon Smith <simon () snosoft com>]

ok, that makes sense... will greylisting counter this?

Geo. wrote:
> > 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.
>
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