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How to block invalid email user authentication.

Discussion in 'Security' started by John, May 16, 2015.

  1. John

    John Active Member

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    Hi,

    I see many invalid user authentication in exim log, is there any way to completely reject invalid user auth(using acl or any other exim feature) rather than blocking the IP using CSF.

    Any help would be appreciated.
     
  2. quizknows

    quizknows Well-Known Member

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    Can you clarify what you mean or what you're trying to accomplish when a login is rejected?
     
  3. cPanelMichael

    cPanelMichael Forums Analyst
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    Hello,

    Authentication should already fail if the username does not exist. Could you elaborate further or provide a specific example?

    Thank you.
     
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