Spam backscatter, can it be filtered?

Discussion in 'Server Operation' started by Taleman, Jul 13, 2018.

  1. Taleman

    Taleman Well-Known Member HowtoForge Supporter

    Lot's of e-mails arriving, which I believe are spam backscatter
    That article says it is possible to filter those messages, is it doable in ISPConfig? I run ISPConfig 3.1.11 on Debian 9.4.
    Or is there some other way to reduce those messages? SPF is used, but are those mail servers that send me that backscatter checking the approved senders?
  2. till

    till Super Moderator Staff Member ISPConfig Developer

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