server-dotfiles/mail/docker-compose.yml

---
version: '3.9'
services:
  mail:
    image: mailserver/docker-mailserver:12.1.0
    hostname: ${HOSTNAME}
    domainname: ${DOMAINNAME}
    container_name: ${CONTAINER_NAME}
    restart: unless-stopped
    stop_grace_period: 2m30s # Avoid data loss
    ports:
      - "25:25"
      - "143:143"
      - "587:587"
      - "993:993"
      # - "127.0.0.1:1134:1134" # Only useful once we enable RSPAMD
    volumes:
      - maildata:/var/mail
      - mailstate:/var/mail-state
      - maillogs:/var/log/mail
      - ./config/:/tmp/docker-mailserver/
      - nginx_cert:/etc/letsencrypt/live/mail.poldebra.me
    env_file:
      - .env
      - env-mailserver
    cap_add:
      - NET_ADMIN
      - SYS_PTRACE
    networks:
      - internal
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"

  roundcubedb:
    image: postgres:9.6-alpine
    restart: unless-stopped
    env_file:
      - .env
      - env-roundcube
    volumes:
      - rb_db:/var/lib/postgresql/data/
    networks:
      - internal
    logging:
      driver: "json-file"
      options:
        max-size: "5m"
        max-file: "3"

  roundcube:
    image: roundcube/roundcubemail:1.6.x-apache
    restart: unless-stopped
    depends_on:
      - mail
      - roundcubedb
    env_file:
      - .env
      - env-roundcube
    volumes:
      - rb_config:/var/roundcube/config/
    networks:
      - proxy
      - internal
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"

volumes:
  maildata:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: "/srv/docker/mail/data"
  mailstate:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: "/srv/docker/mail/state"
  maillogs:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: "/srv/docker/mail/logs"
  rb_config:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: "/srv/docker/mail/roundcube-config"
  rb_db:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: "/srv/docker/mail/roundcube-db"
  nginx_cert:
    driver: local
    driver_opts:
      type: none
      o: bind
      device: "/srv/docker/reverse_proxy/certs/mail.poldebra.me"

networks:
  proxy:
    external: true
  internal: