docker-mailserver/docker-compose.yml

version: '3.8'

services:
  mailserver:
    image: docker.io/mailserver/docker-mailserver:latest
    hostname: ${HOSTNAME}
    domainname: ${DOMAINNAME}
    container_name: ${CONTAINER_NAME}
    env_file: mailserver.env
    # To avoid conflicts with yaml base-60 float, DO NOT remove the quotation marks.
    ports:
      - "25:25"
      - "143:143"
      - "587:587"
      - "993:993"
    volumes:
      - maildata:/var/mail
      - mailstate:/var/mail-state
      - maillogs:/var/log/mail
      - /etc/localtime:/etc/localtime:ro
      - ./config/:/tmp/docker-mailserver/${SELINUX_LABEL}
    restart: always
    stop_grace_period: 1m
    cap_add: [ "NET_ADMIN", "SYS_PTRACE" ]

volumes:
  maildata:
  mailstate:
  maillogs: