Docker 메일 서버 구축

• Docker를 사용한 기본적인 메일 서버 환경 구축
  • SMTP/IMAP3 - Docker Mailserver 프로젝트 사용
  • Web GUI - Roundcube 프로젝트 사용

Prerequirements

• DNS 서버 설정
  • test.example.com.
    • A 10.1.0.10
    • MX 10 mail.test.example.com
  • mail.test.example.com.
    • A 10.1.0.10
• 서버 시스템 설정
  • Rocky Linux/EPEL
    • dnf install docker docker-compose -y
  • Arch linux
    • pacman -Sy docker docker-compose
  • Debian
    • apt install docker docker-compose -y

Docker Mailserver

Roundcube

통합 설정

• Docker Mailserver의 compose와 Roundcube의 compose를 합쳐 하나의 Docker Compose로 실행 가능

  services:
  # Roundcube
    roundcubemail:
      image: roundcube/roundcubemail:latest
      container_name: roundcubemail
  #    restart: unless-stopped
      volumes:
        - ./www:/var/www/html
        - ./db/sqlite:/var/roundcube/db
      ports:
        - 9002:80
      environment:
        - ROUNDCUBEMAIL_DB_TYPE=sqlite
        - ROUNDCUBEMAIL_SKIN=elastic
        - ROUNDCUBEMAIL_DEFAULT_HOST=tls://mail.test.example.com
        - ROUNDCUBEMAIL_SMTP_SERVER=tls://mail.test.example.com
  
  # Docker Mailserver
    mailserver:
      image: ghcr.io/docker-mailserver/docker-mailserver:latest
      container_name: mailserver
      # Provide the FQDN of your mail server here (Your DNS MX record should point to this value)
      hostname: mail.test.example.com
      ports:
        - "25:25"    # SMTP  (explicit TLS => STARTTLS, Authentication is DISABLED => use port 465/587 instead)
        - "143:143"  # IMAP4 (explicit TLS => STARTTLS)
        - "465:465"  # ESMTP (implicit TLS)
        - "587:587"  # ESMTP (explicit TLS => STARTTLS)
        - "993:993"  # IMAP4 (implicit TLS)
      volumes:
        - ./docker-data/dms/mail-data/:/var/mail/
        - ./docker-data/dms/mail-state/:/var/mail-state/
        - ./docker-data/dms/mail-logs/:/var/log/mail/
        - ./docker-data/dms/config/:/tmp/docker-mailserver/
        - /etc/localtime:/etc/localtime:ro
      restart: always
      stop_grace_period: 1m
      # Uncomment if using `ENABLE_FAIL2BAN=1`:
      # cap_add:
      #   - NET_ADMIN
      healthcheck:
        test: "ss --listening --tcp | grep -P 'LISTEN.+:smtp' || exit 1"
        timeout: 3s
        retries: 0
  

• Compose

  $ docker compose up --detach
  

  

• 이후 설정은 개별 설정과 동일

Test

• 로그인

• 메인 화면

• 메일 전송

• 메일 수신 (example)

• 메일 수신 (cju)