--- a/services/univention-bind/bind.py	
+++ a/services/univention-bind/bind.py	
@@ -155,6 +155,7 @@ def _new_zone(ucr, zonename, dn):
 	proxy_zone.write('\ttype slave;\n')
 	proxy_zone.write('\tfile "%s.zone";\n' % (zonename,))
 	proxy_zone.write('\tmasters port 7777 { 127.0.0.1; };\n')
+	proxy_zone.write('\tforwarders {};\n')
 	proxy_zone.write('};\n')
 	proxy_zone.close()
 	os.chmod(proxy_file, 0o640)