homeserver/roles/mgrote_postfix/handlers/main.yml

---
- name: reload postfix
  become: true
  ansible.builtin.systemd:
    name: postfix
    enabled: true
    state: restarted
  notify: send testmail

- name: send testmail # noqa no-changed-when
  ansible.builtin.shell:
    cmd: "set -o pipefail && echo 'postfix ist eingerichtet' | mail -aFROM:postfix@mgrote.net -s '{{ ansible_hostname }} - postfix' {{ my_mail }}"
    executable: /bin/bash