mail_gateway/tasks/main.yml

---
- name: Set OS dependent variables
  ansible.builtin.include_vars: "{{ lookup('first_found', params) }}"
  vars:
    params:
      files:
        - "{{ ansible_distribution | lower }}_{{ ansible_distribution_version | lower }}.yml"
        - "{{ ansible_distribution | lower }}_{{ ansible_distribution_major_version | lower }}.yml"
        - "{{ ansible_distribution | lower }}.yml"
        - "{{ ansible_os_family | lower }}.yml"
        - "{{ ansible_system | lower }}.yml"
      paths:
        - '{{ role_path }}/vars'
  ignore_errors: True

- name: OS is supported
  ansible.builtin.assert:
    that: __os_supported
    quiet: True
  vars:
    __os_supported: "{{ lookup('vars', '{}_os_supported'.format(role_name)) | bool }}"

- name: Install postfix
  apt:
    name: postfix
    state: latest

- name: Set postfix's main.cf
  template:
    src: main.cf.j2
    dest: /etc/postfix/main.cf

- name: Restart postfix
  service:
    name: postfix
    state: restarted