Log-Bounce.md

@@ -13,4 +13,24 @@ The email address you entered couldn't be found. Please check the recipient's em
 ```
 => Đã gửi được mail, không gửi được tới 1 trong số những người dùng trong alias
 
+Undelivered Mail Returned to Sender
+https://postman.prmail.vn/org/prmail/servers/dauthau/messages/16118
+
+```
+This is the mail system at host gw.vnptmail.vn.
+
+I'm sorry to have to inform you that your message could not
+be delivered to one or more recipients. It's attached below.
+
+For further assistance, please send mail to postmaster.
+
+If you do so, please include this problem report. You can
+delete your own text from the attached returned message.
+
+The mail system
+
+<viethuan@dkdhitec.com>: Host or domain name not found. Name service error for
+name=dkdhitec.com type=A: Host not found
+```
+