Defines actions which have been performed by the Reporting-MTA
as a result of its attempt to deliver the message to the recipient.
MailBee.NET (in MailBee.NET.dll) Version: 11.2.0 build 590 for .NET 4.5
Public Enumeration DsnAction
The message could not be delivered to the recipient.
The Reporting MTA has so far been unable to deliver or relay the message,
but it will continue attempting to do that.
The message was successfully delivered to the recipient.
The message has been relayed or gatewayed.
The recipient list has been expanded.
An unknown DSN action has occured.
Reporting MTA is the one which is reporting the results
of delivery attempts described in this DSN. See ReportingMtaType
topic for details.