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Reverse DNS Lookup

Discussion in 'E-mail Discussion' started by cmedik, Aug 1, 2014.

  1. cmedik

    cmedik Member

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    In WHM I use a script called mail scanner, which lets me look at incoming and outgoing mail on the server. Problem I am seeing is that I get spammed and when I got to look into the message the hostname always says Reverse lookup failed and there mail still comes through. Is there a setting in WHM somewhere that I can set up or have to turn on and says if reverse lookup failed it will deny the message and or email? Thanks for time.
     
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager
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    Hello :)

    You may find the following document useful from Exim:

    42. Access control lists

    In particular, you should search for this term:

    verify = reverse_host_lookup
    Thank you.
     
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  3. cmedik

    cmedik Member

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    Ok it is a good doc. Since I am new to WHM where would I go to set this. Any help appreciated?
     
  4. cPanelMichael

    cPanelMichael Technical Support Community Manager
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    In previous threads, advice has been to browse to:

    "WHM Home » Service Configuration » Exim Configuration Manager » Advanced Editor"

    Search for "custom_begin_check_message_pre" and try adding the following entry to that field:

    require verify = reverse_host_lookup

    Let us know if that's helpful.

    Thank you.
     
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