version: '3.8' services: mail: image: tvial/docker-mailserver:latest hostname: ${HOSTNAME} domainname: ${DOMAINNAME} container_name: ${CONTAINER_NAME} ports: - "25:25" - "143:143" - "587:587" - "993:993" volumes: - maildata:/var/mail - mailstate:/var/mail-state - maillogs:/var/log/mail - ./config/:/tmp/docker-mailserver/ env_file: - mailserver.env cap_add: - NET_ADMIN - SYS_PTRACE restart: always volumes: maildata: mailstate: maillogs: