diff --git a/Log-Bounce.md b/Log-Bounce.md
index f2b856e..7675164 100644
--- a/Log-Bounce.md
+++ b/Log-Bounce.md
@@ -164,6 +164,19 @@ from localhost [127.0.0.1]
 <<< 554 no valid recipients given
 ```
 
+* Subject: Mail delivery failed: returning message to sender
+
+URL: https://postman.prmail.vn/org/getfly/servers/getfly1/messages/180627/
+
+```
+This message was created automatically by mail delivery software.
+
+A message that you sent could not be delivered to one or more of its
+recipients. This is a permanent error. The following address(es) failed:
+
+vy.vien@winwinaudit.com.vn
+No Such User Here"
+```
 ### Lỗi cần chú ý
 
 * Subject: Delivery Status Notification (Failure)