services: smtp4dev: image: rnwood/smtp4dev pull_policy: always container_name: smtp4dev restart: unless-stopped ports: - "{{smtp4dev_port}}:80" - "{{smtp4dev_smtp_port}}:25" - "{{smtp4dev_imap_port}}:143" volumes: - smtp4dev_data:/smtp4dev environment: ServerOptions__BasePath: "/" ServerOptions__Hostname: smtp4dev logging: driver: syslog options: syslog-address: "tcp://127.0.0.1:{{smtp4dev_syslog_port}}" syslog-format: "{{syslog_format}}" tag: "smtp4dev" volumes: smtp4dev_data: