correct mail FROM

defaults/main.yml

@@ -1,2 +1,5 @@
 ---
 # defaults file for cronie
+
+domain:
+  name: toto

tasks/main.yml

@@ -7,3 +7,10 @@
 - name: Enable cronie
   service: name=cronie.service enabled=yes state=started
   become: yes
+
+- name: Set MAILFROM
+  become: true
+  lineinfile:
+    dest: /var/spool/cron/root
+    regexp: "MAILFROM="
+    line: "MAILFROM= {{inventory_hostname}}@{{domain.name}}"