CentOS 7.x configure postfix to use only ipv4

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Home > CentOS > CentOS 7.x > Email configuration > Postfix configuration > CentOS 7.x configure postfix to use only ipv4

By default based on DNS postfix might resolve IPv6 addresses also. To force postfix to use only IPv4 set

  inet_protocols = ipv4

and restart postfix

Refer:

https://support.plesk.com/hc/en-us/articles/213398289-Specifying-Postfix-configuration-of-IPv4-IPv6-protocol-support

Home > CentOS > CentOS 7.x > Email configuration > Postfix configuration > CentOS 7.x configure postfix to use only ipv4

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