version: "3"
services:
  postfix:
    build: postfix
    image: r.sbruder.de/postfix
    restart: always
    environment:
      - MYHOSTNAME=mail.example.com
      - MYDOMAIN=example.com
      - MAIL_NAME=sbrudermail
      - MESSAGE_SIZE_LIMIT=15360000
      - DOMAINS=example.com example.net
      - POSTMASTER=postmaster@example.com
      - LDAP_SERVER=ldap.example.com
      - LDAP_BASE=ou=users,dc=example,dc=com
      - LDAP_USER=cn=readonly,dc=example,dc=com
      - LDAP_PASSWORD=v3rys3cur3
    volumes:
      - ./aliases.d:/etc/postfix/aliases.d
      - ../web/certs/mail.example.com/:/tls/:ro
      - ./spool/postfix:/var/spool/postfix
      - dhparams:/etc/postfix/dh-params
    ports:
      - "25:25"
      - "587:587"
    depends_on:
      - dovecot

  dovecot:
    build: dovecot
    image: r.sbruder.de/dovecot
    restart: always
    environment:
      - LDAP_SERVER=ldap.example.com
      - LDAP_BASE=ou=users,dc=example,dc=com
      - LDAP_USER=cn=readonly,dc=example,dc=com
      - LDAP_PASSWORD=v3rys3cur3
    volumes:
      - ./vmail/:/var/vmail/
      - ../web/certs/mail.example.com/:/tls/:ro
      - dhparams:/etc/dovecot/dh-params
    ports:
      - "143:143"

volumes:
  dhparams: {}