Update to 2021-09-29 18:00

roles/common/tasks/mail.yml

@@ -1,11 +1,15 @@
 ---
 
-- name: Configure root email forward
+- when: system_admin_email is defined
-  lineinfile:
+  block:
-    dest: /etc/aliases
+    - name: Install postfix
-    regexp: "^root:.*"
+      package: name=postfix
-    line: "root: {{ system_admin_email }}"
+
-  notify: newaliases
+    - name: Configure root email forward
-  when: system_admin_email is defined
+      lineinfile:
+        dest: /etc/aliases
+        regexp: "^root:.*"
+        line: "root: {{ system_admin_email }}"
+      notify: newaliases
 
 ...