bugfix dns settings

kerioEmail_mx.php

@@ -112,7 +112,7 @@ function KerioEmail_setSPF($params)
 
         if(!$record->type === 'TXT'){
             array_push($zoneRecords, $record);
-        } elseif (!preg_match("#^v=spf(.*)$#i", $record->rdata->txtdata)) {
+        } elseif (!preg_match('/^v=spf(.*)$/i', $record->rdata->txtdata)) {
             logModuleCall(
                 'kerioEmail',
                 __FUNCTION__,