[Solved] Postfix/smtp: Client host rejected: cannot find your reverse hostname

Discussion in 'Server Operation' started by Uzumymw, Nov 28, 2016.

  1. Uzumymw

    Uzumymw New Member

    Hello,
    few days ago I've installed ISPConfig on VPS. Wverything worked, but in mail queue i found some logs like this:
    (host xx.xx.xx.xx[xx.xxx.xxx.xx] said: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [yyy.yyy.yy.yyy] (in reply to RCPT TO command))
    or
    (host mx.poczta.onet.pl[xxx.xxx.xxx.xxx] refused to talk to me: 450 4.7.1 Client host rejected: cannot find your reverse hostname, [yyy.yyy.yy.yyy])

    I've tried to found reason in Google, but I have not found a clear answer: Is it a postfix configuration or DNS / domain site wine?
    And another question is how to fix it?
     
  2. florian030

    florian030 ISPConfig Developer ISPConfig Developer

    dig +short -t A your_hostname
    dig +short -x IP_FROM_ABOVE
    ?
     
  3. Uzumymw

    Uzumymw New Member

    Problem solved. I forgot to set revDNS on VPS.
     

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