diff --git a/roles/mail_forwarder/tasks/main.yml b/roles/mail_forwarder/tasks/main.yml
index a8014e1295ce0294e00df60f54ed7dc33b872c5b..e6bba90fb4c4f961eba1aed41b5decf91c9b8fc7 100644
--- a/roles/mail_forwarder/tasks/main.yml
+++ b/roles/mail_forwarder/tasks/main.yml
@@ -36,7 +36,7 @@
 
 - name: Configure visible mail name of the system
   ansible.builtin.copy:
-    content: "{{ inventory_hostname }}"
+    content: "{{ ansible_fqdn }}"
     dest: "/etc/mailname"
     owner: root
     group: root