docker-compose.yml

version: '3.8'

services:
  mailserver:
    image: docker.io/mailserver/docker-mailserver:latest
    hostname: <HOSTNAME> # <-- CHANGE THIS
    domainname: <DOMAINNAME> # <-- CHANGE THIS
    container_name: mailserver
    env_file: mailserver.env
    # To avoid conflicts with yaml base-60 float, DO NOT remove the quotation marks.
    # More information about the mailserver ports:
    # https://docker-mailserver.github.io/docker-mailserver/edge/config/security/understanding-the-ports/
    ports:
      - "25:25"    # SMTP  (explicit TLS => STARTTLS)
      - "143:143"  # IMAP4 (explicit TLS => STARTTLS)
      - "465:465"  # ESMTP (implicit TLS)
      - "587:587"  # ESMTP (explicit TLS => STARTTLS)
      - "993:993"  # IMAP4 (implicit TLS)
    volumes:
      - ./data/maildata:/var/mail
      - ./data/mailstate:/var/mail-state
      - ./data/maillogs:/var/log/mail
      - /etc/localtime:/etc/localtime:ro
      - ./config/:/tmp/docker-mailserver/
    restart: always
    stop_grace_period: 1m
    cap_add: [ "NET_ADMIN", "SYS_PTRACE" ]