+
+ # adjust postfix configuration
+ if [ -r /etc/postfix/main.cf ] ; then
+ # adjust hostname related options:
+ sed -i "s/grml/$HOSTNAME/g" /etc/postfix/main.cf
+ sed -i "s/^myhostname = .*/myhostname = $HOSTNAME/" /etc/postfix/main.cf
+ sed -i "s/^mydestination = .*/mydestination = localdomain, localhost, localhost.localdomain, $HOSTNAME/" /etc/postfix/main.cf
+
+ # listen on loopback interface only:
+ sed -i "s/^inet_interfaces = .*/inet_interfaces = loopback-only/" /etc/postfix/main.cf
+ grep -q inet_interfaces /etc/postfix/main.cf || echo 'inet_interfaces = loopback-only' >> /etc/postfix/main.cf
+ fi