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

Discussion in 'Server Operation' started by Uzumymw, Nov 28, 2016 at 5:23 PM.

  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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