Send the HELO string. Throw a MailException if we can't connect.
[Visual Basic] Public Function Helo( _ ByVal localHostName As String _ ) _ Implements ISmtpProxy.Helo As SmtpResponse [C#] public SmtpResponse Helo( string localHostName ); [C++] public: SmtpResponse* Helo( String* localHostName ); [JScript] public function Helo( String localHostName ): SmtpResponse;
the SMTP response