Holds collection of all messages that need to be relayed.

A SmtpRelays object.  

object.Relays

The Relays Property syntax has these parts:

Relays is a read-only property is a reference to collection of all messages currently (or waiting to) being relayed.

To add new message to be relayed, all you need to do something like this:

wodSmtpServer1.Relays.Add User.Message

although, you could also interfere with the relaying process by changing directly items in SmtpRelay object, such as Hostname, MailFrom etc...