[Mimedefang] Combatting Backscatter

Rob MacGregor rob.macgregor at gmail.com
Wed Apr 16 19:13:10 EDT 2008

On Wed, Apr 16, 2008 at 11:44 PM, Kevin A. McGrail <kmcgrail at pccc.com> wrote:
> I've been seeing a LOT of backscatter lately spreading out to a lot more
> people lately.  I can only imagine more and more ratware is forging from
> addresses.
>  In any case, I'm trying to figure out more about what we can do to combat
> them.  I've thought about tagging/recording all outgoing email and comparing
> the incoming DSNs, etc. but I'm worried that the emails will come from an
> administrator / general mail making this ineffective.
>  Has anyone got any tricks or ideas up their sleeves?

YMMV, but I've found that moving to (publishing and checking) SPF and
DKIM has ended any attempts to use my domain in the from address by
such people.  Others have reported mixed success.

Rob MacGregor
 Whoever fights monsters should see to it that in the process he
 doesn't become a monster. Friedrich Nietzsche

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