Ansible playbook for setting up Postfix

postfix.yml

---
- name: set debconf defaults before postfix install
  shell: debconf-set-selections <<< "postfix postfix/mailname string {{ hostname }}" executable=/bin/bash
  sudo: yes
  tags: postfix

- name: set debconf defaults before postfix install
  shell: debconf-set-selections <<< "postfix postfix/main_mailer_type string 'Internet Site'" executable=/bin/bash
  sudo: yes
  tags: postfix

- name: install postfix
  apt: pkg=postfix state=present
  sudo: yes
  tags: postfix

- name: forward all root mail to {{ email_forward }}
  shell: echo "{{ email_forward }}" > /root/.forward
  sudo: yes
  notify: restart postfix
  tags: postfix