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273701Re: Spam Backscatter

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  • Ansgar Wiechers
    Feb 1, 2011
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      On 2011-02-02 Simon wrote:
      > We are receiving what appears to be backscatter from spam that is
      > using a valid address in the Return Path. I have included an example
      > of the header info from one of the spam messages below. The ?From? and
      > ?To? addresses just seem to be random and are not related to us in any
      > way. Does anyone know to block this sort of backscatter?

      I wrote a backscatter filter based on smtpprox to handle this.

      http://www.planetcobalt.net/sdb/backscatter.shtml

      WFM, but AFAIK not tested outside low traffic environments.

      Regards
      Ansgar Wiechers
      --
      "Abstractions save us time working, but they don't save us time learning."
      --Joel Spolsky
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