DeliveryMethod Enumeration
The DeliveryMethod enumeration indicates the direction in which a message is coming or going.
Namespace:  Microsoft.Exchange.Data.Transport
Assembly:  Microsoft.Exchange.Data.Transport (in Microsoft.Exchange.Data.Transport.dll)
Syntax
'Declaration
Public Enumeration DeliveryMethod
'Usage
Dim instance As DeliveryMethod
public enum DeliveryMethod
Members
| Member name | Description | |
|---|---|---|
| Unknown | The direction of the message cannot be determined. | |
| File | For an incoming message, the message comes from the pickup directory, the replay directory, a Delivery Status Notification (DSN), or the mail submission API. For an outgoing message, the message is going to a server that is not a Simple Mail Transfer Protocol (SMTP) server or it is an application message on the destination server. | |
| Mailbox | The message is coming from or going to a mailbox. | |
| Smtp | The message is coming from or going to an SMTP endpoint. | |
| DeliveryAgent | The message is coming from a Delivery Agent. |