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294611Re: Three trivial filtering questions

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  • Ronald F. Guilmette
    Aug 5, 2013
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      In message <51FF9E18.9050701@...>,
      Noel Jones <njones@...> wrote:

      >I use a pcre table to reject any HELO that starts with a bracket or
      >looks like an IP. Legit hosts that use this form are very rare here
      >-- maybe one every couple years.
      >...
      >There is no built-in postfix restriction to compare the HELO to the
      >client hostname, and I would question the value of such a feature.

      Correct me if I'm wrong, but I think you just made the case for
      the value of such a feature.

      >Do you see lots of spam with incorrect IP in the HELO?

      Some.

      >Do you see
      >significant numbers of legit hosts using a bracketed IP HELO?

      None so far.


      Regards,
      rfg
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