containers-postfix/postfixd.sh

#!/bin/sh

case $1 in
  start)
    # Reconfigure postfix according to environment
    postconf -e myhostname="${DOMAIN}"
    postconf -e mydomain="${SUTTY}"
    postconf -e smtpd_tls_key_file="/etc/letsencrypt/live/${DOMAIN}/privkey.pem"
    postconf -e smtpd_tls_cert_file="/etc/letsencrypt/live/${DOMAIN}/fullchain.pem"

    if test -n "${MILTERS}"; then
      postconf -e smtpd_milters="${MILTERS}"
      postconf -e non_smtpd_milters="${MILTERS}"
    fi

    if test -n "${SRS}"; then
      postconf -e sender_canonical_maps=tcp:${SRS}:10001
      postconf -e recipient_canonical_maps=tcp:${SRS}:10002
      postconf -e sender_canonical_classes=envelope_sender
      postconf -e recipient_canonical_classes=envelope_recipient,header_recipient
    fi

    test -n "${NETWORKS}" && postconf -e mynetworks="${NETWORKS}"

    ;;
  stop) ;;
esac

exec /usr/sbin/postfix $1