When a mail server with DSN receives a message, it sends a delivery confirmation to the sender of the message.
Change this setting to OFF, if you are sending a message to a mail server that does not support DSN.
If you do not change this setting to OFF, the server may not be able to handle the message correctly and a communication error may occur.
Some servers can send mail to servers without DSN. In this case, no delivery notification will be sent.
The default setting is OFF.
! User Function 86, TEXT PRINT must be ON for your machine to receive and print delivery notifications.
! When User Function 98, Network Settings, DSN is ON, your machine receives confirmations (DSN) from the mail server of anyone sent a message by your machine.

12: DSN (Delivery Status Notification)

!MDN vs. DSN

MDN = Message Disposition Notification DSN = Delivery Status Notification

MDN: you receive a confirmation that your message was received by the destination mail server.

DSN: you receive a confirmation that your message was opened by the person you sent it to (the recipient).

All systems involved in the communication must support MDN and DSN.

44 OKIFAX 5780/5980

Page 44
Image 44
Oki 5780 manual DSN Delivery Status Notification