diff --git a/roles/common/tasks/mail.yml b/roles/common/tasks/mail.yml
index a135544..084107d 100644
--- a/roles/common/tasks/mail.yml
+++ b/roles/common/tasks/mail.yml
@@ -1,11 +1,15 @@
 ---
 
-- name: Configure root email forward
-  lineinfile:
-    dest: /etc/aliases
-    regexp: "^root:.*"
-    line: "root: {{ system_admin_email }}"
-  notify: newaliases
-  when: system_admin_email is defined
+- when: system_admin_email is defined
+  block:
+    - name: Install postfix
+      package: name=postfix
+
+    - name: Configure root email forward
+      lineinfile:
+        dest: /etc/aliases
+        regexp: "^root:.*"
+        line: "root: {{ system_admin_email }}"
+      notify: newaliases
 
 ...