[EXIM] FYI: Content-MD5(-Origin) hacks

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Author: Martin Hamilton
Date:  
To: exim-users
Subject: [EXIM] FYI: Content-MD5(-Origin) hacks

Ciao!

Martin




<URL:http://www.net.lut.ac.uk/~martin/antispam/>

What's this ?

Some hacks on widely used mail programs which let you suppress
duplicate copies of messages with exactly the same content.

Why ?

This is a characteristic of lots of Bad Things, e.g. sp*m,
pathologically broken mail systems/gateways, and malconfigured
mail systems.

Does it work ?

Seems to - but you'd have to be crazy to run it on a production
system! Needs some alpha testers, hence this message :-)

MANIFEST:

draft-hamilton-content-md5-origin-00.txt - tech docs

  exim-hacks      - patch for Exim 1.82 (new version!)
  sendmail-hacks  - patch for sendmail 8.8.8
  procmail-hacks  - patch for procmail 3.11pre7
  majordomo-hacks - not yet!  watch the skies!!



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