myorigin = localhost.acme.fr
mydestination = $myhostname, localhost.$mydomain, localhost, $myorigin,
transport_maps = hash:/etc/postfix/transport

mydomain = acme.fr
myhostname = myhostname
relayhost = 192.168.6.28
default_transport = smtp
relay_transport = smtp
#inet_interfaces = localhost
inet_interfaces = loopback-only
inet_protocols = ipv4