protected List<ProtocolHandler> initDefaultHandlers() {
List<ProtocolHandler> defaultHandlers = new ArrayList<ProtocolHandler>();
defaultHandlers.add(new SMTPCommandDispatcherLineHandler());
defaultHandlers.add(new ExpnCmdHandler());
defaultHandlers.add(new EhloCmdHandler());
defaultHandlers.add(new HeloCmdHandler());
defaultHandlers.add(new HelpCmdHandler());
defaultHandlers.add(new MailCmdHandler());
defaultHandlers.add(new NoopCmdHandler());
defaultHandlers.add(new QuitCmdHandler());