Internet Direct (Indy) Version 9.0.1 Beta
TIdSMTPServer.OnCommandVRFY
Event handler signalled to implement the SMTP VRFY command.

property OnCommandVRFY: TBasicHandler;
Description
OnCommandVRFY is a TBasicHandler property that represents the event handle signalled when executing the SMTP VRFY command using CommandHandlers. OnCommandVRFY allows the SMTP server to verify that the TIdCommand.Params value specified in ASender contains a valid user name or email address for a mailbox on the SMTP server.

The SMTP server implementation must assign a procedure to the OnCommandVRFY event handler to allow responding to the event notification. When OnCommandVRFY is unassigned, the text in Messages.ErrorReply is sent to the client connection.