diff --git a/gestion/gen_confs/bind.py b/gestion/gen_confs/bind.py
index 5249a0ba..96c63ad1 100755
--- a/gestion/gen_confs/bind.py
+++ b/gestion/gen_confs/bind.py
@@ -615,7 +615,7 @@ class dns(gen_config):
 
     NON_CLONABLE_SPFs = {
         'crans.org': [
-            TXT(_mx, 'v=spf1 mx:crans.org ~all') for _mx in config.dns.MXs
+            TXT(short_name(_mx), 'v=spf1 mx:crans.org ~all') for _mx in config.dns.MXs
         ],
     }