NOTE: This method is called only if you
implementedIwodSmtpNotifyinterface in your application, and
wodSmtpServer1.Notificationproperty has received reference to
instance of your implementation.
This notification method is called immediately after
user sends mail headers, but before any body is received,
and before headers are written to the local file. At this
point you can access Headers collection and add, change,
remove headers from it as you wish.
You cannot deny accepting further message because SMTP
protocol does not allow it.