--- - name: Converge hosts: all become: yes gather_facts: yes roles: - role: ansible-role-postfix postfix_relayhost: "[relay.example.com]" postfix_myhostname: "smtp.example.com" postfix_mydomain: "example.com" postfix_myorigin: "example.com" postfix_mynetworks: - 127.0.0.0/8 - 192.168.0.0/16 postfix_aliases: - name: root destination: test@example.com