diff --git a/legacy/projects/hermes/ansible/inventory/host_vars/hermes.yml b/legacy/projects/hermes/ansible/inventory/host_vars/hermes.yml
index 5e9d556..283822f 100644
--- a/legacy/projects/hermes/ansible/inventory/host_vars/hermes.yml
+++ b/legacy/projects/hermes/ansible/inventory/host_vars/hermes.yml
@@ -97,6 +97,10 @@ bind_zones:
       - name: '@'
         text: "\\\"google-site-verification=sznWJNdSZfiAESJhnDQEJ6hf06W9vndvhMi6wP_HH04\\\""
 
+    mail_servers:
+      - name: mail
+        preference: 10
+
   - name: geokunis2.nl
     primaries:
       - 192.168.30.7