- name: Check that a username and password is supplied
  assert:
    that:
      - (relay_user is defined) and (relay_user is not none)
      - (relay_password is defined) and 
          (relay_password is not none)
    fail_msg: "'relay_user' and 'relay_password' must be set"
    success_msg: "username and password for relay is set"

- name: Check that we have supplied a recipient address
  assert:
    that:
      - (external_email_address is defined) and 
          (external_email_address is not none)
    fail_msg: "'external_email_address' must be set. Local 
      mail will be forwarded to this address"
    success_msg: "Recipient address is set"

- name: Update the cache if we are on a Debian based system
  apt:
    update_cache: yes
    cache_valid_time: 3600
  when: ansible_os_family == 'Debian'

- name: Install Postfix and s-nail
  package:
    state: present
    name: "{{ item }}"
  with_items:
    - postfix
    - s-nail
  notify: Activate and restart Postfix

- name: Configure Postfix
  template:
    src: main.cf.j2
    dest: /etc/postfix/main.cf
  notify: Activate and restart Postfix

- name: Copy Postfix authentication
  template:
    src: sasl_passwd.j2
    dest: /etc/postfix/sasl_passwd
    mode: 0600
  notify: Generate SASL

- name: Copy alisases
  template:
    src: aliases.j2
    dest: /etc/aliases
  notify: Generate aliases

- name: Copy sender_canonical
  template:
    src: sender_canonical.j2
    dest: /etc/postfix/sender_canonical
  notify: Generate sender_canonical