DsnAttachmentOriginalEnvelopeID Property |
Namespace: MailBee.BounceMail
This field contains an "envelope identifier" which uniquely identifies the transaction during which the message was submitted by sender. When sending the original e-mail message, you can specify this ID using Smtp.DeliveryNotification.TrackingID property (the sending mail server, however, must support DSN extension).
In this example, DSN field is:
Original-Envelope-Id: A406980DD7D140DCAD796DDCE62EF673.MAI@afterlogic.com
The return value is marked bold.