--- - name: setup network for postfix docker_network: name: postfix ipam_config: - subnet: '172.16.0.0/16' gateway: 172.16.0.1 - name: setup postfix docker container for outgoing mail docker_container: name: postfix image: boky/postfix:{{ services.postfix.version }} restart_policy: always networks: - name: postfix env: # Get all services which have allowed_sender_domain defined ALLOWED_SENDER_DOMAINS: "{{ services | dict2items | selectattr('value.allowed_sender_domain', 'true') | map(attribute='value.domain') | join(' ') }}" HOSTNAME: "smtp.{{ base_domain }}" # the name the smtp server will identify itself as