Part 2.6 Message Disposition Notification

MDN - Message Disposition Notification
A Message Disposition Notification (MDN) is a receipt document that contains the original message ID of a message and status information about the original message.
It is just a notification where the message has heated to the partner gateway or not.

SYNCHRONOUS

• Real-time Communication between two or more parties.
• The port or session will be closed once the notification received by the sender.
• Security: It is more secure.
• Protocol: HTTP
• Signed: Encrypted signature and original ID

ASYNCHRONOUS

• It is not Real-time communication between two or more parties.
• The port or session will be open until the sender will close the session.
• Security: It is less secure.
• Protocol: SMTP
• Unsigned: Only original ID, No encrypted signature