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Reverse DNS Lookup

Discussion in 'E-mail Discussions' 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 Forums Analyst
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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.
     
  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 Forums Analyst
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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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