Cannot send an email to gmail

Discussion in 'Server Operation' started by ipol2n, Nov 28, 2013.

  1. ipol2n

    ipol2n New Member

    I followed this tutorial http://www.howtoforge.com/perfect-server-centos-6.4-x86_64-apache2-dovecot-ispconfig-3.

    I can send an email from gmail to my domain but I cannot send an email from my domain to gmail :(

    I got the following message back from gmail:
    How can I solve this?

    Thank you in advance
     
  2. edge

    edge Active Member Moderator

  3. ipol2n

    ipol2n New Member

    Yes. But it is neither Bulk Sender nor Mail Forwarding.
    I also checked for Black List IP. My IP does not in the black list.
     
  4. Croydon

    Croydon ISPConfig Developer ISPConfig Developer

    Your system seems to use ipv6 for mail sending.
    Have you checked that your server's name does resolve to it's ipv6 and the rdns for the ipv6 is set?
     
  5. ipol2n

    ipol2n New Member

    I'm a newbie with CentOS.
    Could you guide me how to do rdns?
     
  6. Croydon

    Croydon ISPConfig Developer ISPConfig Developer

    You can try
    Code:
    host -a your.servername.com
    and
    Code:
    dig -x serverip
    and
    Code:
    dig -x serveripv6
    You see the configured ip addresses by typing
    Code:
    sudo ifconfig
     
  7. florian030

    florian030 ISPConfig Developer ISPConfig Developer

  8. ipol2n

    ipol2n New Member

    Thanks Croydon and florian030. :)

    Finally, I can make it work now by setting protocol to use only ipv4.
     

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