Refactored to individual files by function

tasks/communication.yml

@@ -0,0 +1,34 @@
+---
+- name: Apply postfix configuration
+  lineinfile:
+    dest: "{{item.dest}}"
+    regexp: "{{item.regexp}}"
+    line: "{{item.line}}"
+    insertafter: EOF
+  notify: Restart Postfix
+  with_items:
+    - { dest: /etc/postfix/main.cf,
+        regexp: "inet_protocols =",
+        line: "inet_protocols = ipv4"
+      }
+    - { dest: /etc/postfix/main.cf,
+        regexp: "inet_interfaces =",
+        line: "inet_interfaces = all"
+      }
+    - { dest: /etc/postfix/main.cf,
+        regexp: "relayhost =",
+        line: "relayhost = {{ relayhost }}"
+      }
+
+- name: Ensure Postfix is Started/Enabled
+  service:
+    name: postfix
+    state: started
+    enabled: yes
+
+- name: Ensure root forwarding address is set
+  lineinfile:
+    dest: ~/.forward
+    regexp: "{{ root_email }}"
+    line: "{{ root_email }}"
+    create: yes