---
- name: Install Prometheus postfix-exporter
  apt:
    update_cache: true
    name: prometheus-postfix-exporter
  register: apt_result
  retries: 3
  until: apt_result is succeeded

- name: Make Prometheus postfix-exporter listen on adm only
  lineinfile:
    path: /etc/default/prometheus-postfix-exporter
    regexp: ^ARGS=
    line: |
      ARGS="--web.listen-address={{ prometheus_postfix_exporter.listen_addr }}:9154"
  notify: Restart prometheus-postfix-exporter