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5.1.0 - unknown address error 554- 'security failure'

Discussion in 'E-mail Discussion' started by meryem, May 29, 2019.

  1. meryem

    meryem Registered

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    i receive this error when i try to send a mail
    5.1.0 - unknown address error 554- 'security failure'
     
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

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    Hello @meryem,

    I recommend reporting this error message to your web hosting provider so they can review /var/log/exim_mainlog to determine exactly why the email delivery attempt failed.

    Thank you.
     
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