add post tasks

tasks/main.yml

@@ -20,3 +20,5 @@
         - "config_default.yml"
       paths:
         - "tasks"
+
+- include_tasks: post_tasks.yml

tasks/post_tasks.yml

@@ -0,0 +1,9 @@
+---
+- name: Ensure postfix service is up and running
+  systemd:
+    name: "postfix"
+    state: started
+    daemon_reload: yes
+    enabled: yes
+  become: True
+  become_user: root