##-------------##
#    Postfix    #
##-------------##

sed -i 's/#inet_interfaces = all/inet_interfaces = loopback-only/g' /etc/postfix/main.cf
sed -i 's/mydestination/#mydestination/g' /etc/postfix/main.cf
sed -i 's/relayhost =/mydestination = '$hostname', localhost.'$hostname', '$hostname'/g' /etc/postfix/main.cf
echo "bounce_notice_recipient = info@$domain" >> /etc/postfix/main.cf
cat <<EOF > /etc/aliases
# See man 5 aliases for format
postmaster:    root
root:          $email
EOF
newaliases

systemctl reload postfix postfix@-