mailserver.yml

# DOMAIN=example.com docker stack deploy -c mailserver.yml mailserver

services:
  mailserver:
    image: mailserver/docker-mailserver:${VERSION:-14.0.0}
    ports:
      - {target: 25, published: 25, mode: host, protocol: tcp}
      - {target: 143, published: 143, mode: host, protocol: tcp}
      - {target: 587, published: 587, mode: host, protocol: tcp}
      - {target: 993, published: 993, mode: host, protocol: tcp}
    volumes:
      - ${VOLUME_PATH}maildata:/var/mail
      - ${VOLUME_PATH}mailstate:/var/mail-state
      - ${VOLUME_PATH}config:/tmp/docker-mailserver/
      - ${VOLUME_PATH}letsencrypt:/etc/letsencrypt/
    environment:
      - OVERRIDE_HOSTNAME=${DOMAIN:-mailserver.localhost}
      - ENABLE_SPAMASSASSIN=1
      - SPAMASSASSIN_SPAM_TO_INBOX=1
      - MOVE_SPAM_TO_JUNK=1
      - ENABLE_CLAMAV=0
      - ENABLE_FAIL2BAN=1
      - ENABLE_POSTGREY=0
      - ONE_DIR=1
      - DMS_DEBUG=0
      - SSL_TYPE=letsencrypt
      - SSL_DOMAIN=${DOMAIN:-mailserver.localhost}
      - POSTFIX_MESSAGE_SIZE_LIMIT=${POSTFIX_MESSAGE_SIZE_LIMIT:-20480000}
    cap_add:
      - NET_ADMIN
      - SYS_PTRACE

volumes:
  config:
  maildata:
  mailstate:
  letsencrypt:

networks:
  traefik:
    external: true
    name: traefik-net