How to fix "warning: not set-gid or not owner+group+world executable"?

In my case it appeared in the logs for two files:

postfix/postfix-script: warning: not set-gid or not owner+group+world executable: /usr/sbin/postqueue
postfix/postfix-script: warning: not set-gid or not owner+group+world executable: /usr/sbin/postdrop

fix is quite trivial though:

  •  chmod g+s /usr/sbin/postqueue
  •  chmod g+s /usr/sbin/postdrop

Hope this works for you as well.

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