Postfix Erro ao iniciar

Jun 5 13:06:46 INTERNET sendmail[3658]: /etc/aliases: 76 aliases, longest 10 bytes, 765 bytes total
Jun 5 13:06:46 INTERNET postfix/postfix-script[3719]: warning: not owned by group maildrop: /usr/sbin/postqueue
Jun 5 13:06:46 INTERNET postfix/postfix-script[3720]: warning: not owned by group maildrop: /usr/sbin/postdrop
Jun 5 13:06:46 INTERNET postfix/postfix-script[3721]: warning: not owned by group maildrop: /var/spool/postfix/public
Jun 5 13:06:46 INTERNET postfix/postfix-script[3722]: warning: not owned by group maildrop: /var/spool/postfix/maildrop
:bike: