diff --git a/51-filter-postfix-aggregate.conf b/51-filter-postfix-aggregate.conf
index c46b895..0a6cd03 100644
--- a/51-filter-postfix-aggregate.conf
+++ b/51-filter-postfix-aggregate.conf
@@ -1,7 +1,9 @@
 filter {
   if ![postfix_queueid] {
     drop {}
-  } else if [program] == "postfix/qmgr" and [postfix_from]{
+  } else if [postfix_queueid] == "NOQUEUE" {
+    drop {}
+  } else if [program] == "postfix/qmgr" and [postfix_from] {
     aggregate {
       task_id => "%{postfix_queueid}"
       code => "