install.sh

#!/bin/bash

#judgement
if [[ -a /etc/supervisor/conf.d/supervisord.conf ]]; then
  exit 0
fi

#supervisor
cat > /etc/supervisor/conf.d/supervisord.conf <<EOF
[supervisord]
nodaemon=true

[program:postfix]
command=/opt/postfix.sh

[program:dovecot]
command=/usr/sbin/dovecot

[program:rsyslog]
command=/usr/sbin/rsyslogd -n -c3
EOF

############
#  postfix
############
cat >> /opt/postfix.sh <<EOF
#!/bin/bash
service postfix start
tail -f /var/log/mail.log
EOF
chmod +x /opt/postfix.sh
postconf -e myhostname=$maildomain
postconf -e "mydestination = $maildomain, $HOSTNAME, localhost.localdomain, localhost"
postconf -e 'smtpd_sasl_type = dovecot'
postconf -e 'smtpd_sasl_auth_enable = yes'
postconf -e 'smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination'
postconf -e 'smtpd_sasl_path = private/auth'
postconf -e message_size_limit=52428800