/etc/postfix/main.cf
smtpd_banner = $myhostname ESMTP myhostname = $HOSTNAME mydestination = relayhost = mynetworks = 127.0.0.0/8 inet_interfaces = loopback-only inet_protocols = ipv4
/etc/postfix/main.cf
smtpd_banner = $myhostname ESMTP myhostname = $HOSTNAME mydestination = relayhost = mynetworks = 127.0.0.0/8 inet_interfaces = loopback-only inet_protocols = ipv4