new dns helper class

core/Helper/DnsHelper.php

@@ -136,6 +136,15 @@ class DnsHelper
                 $var['mx'] = 'wrong';
             }
         }
+
+        logModuleCall(
+    		'kerioEmail',
+	    	__FUNCTION__,
+		    $params,
+    		'Debug',
+	    	$vars
+    	);
+
         return $vars;
     }
 }