diff --git a/include/class.filter.php b/include/class.filter.php
index 70a5f27180c480382107a5c35e0249de49826a30..7cfca2905c61cc22555c1a51fd8b9cfe7f77976e 100644
--- a/include/class.filter.php
+++ b/include/class.filter.php
@@ -905,7 +905,7 @@ class TicketFilter {
 
         $bounce_headers = array(
             'From'  => array('stripos',
-                        array('MAILER-DAEMON', '<>'), null, false),
+                        array('MAILER-DAEMON', '<>', 'postmaster@'), null, false),
             'Subject'   => array('stripos',
                 array('DELIVERY FAILURE', 'DELIVERY STATUS',
                     'UNDELIVERABLE:', 'Undelivered Mail Returned'), 0),