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How to block NUMERIC HELO Mails?

Discussion in 'E-mail Discussions' started by anup123, Mar 9, 2006.

  1. anup123

    anup123 Well-Known Member

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    Get a mail forged as coming from one of our domains (since this domain has catchall active and cannot be deactivated for certain reasons), such mail passes sender verifcation. The HELO portion is as follows:

    Received: from [201.36.189.74] (helo=50424AC0)

    How can such mails be blocked out totallly.

    TIA
    Anup
     
  2. chirpy

    chirpy Well-Known Member

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    Go on, have a guess
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