1 /************************************************************************
2 * Copyright (c) 1999-2006 The Apache Software Foundation. *
3 * All rights reserved. *
4 * ------------------------------------------------------------------- *
5 * Licensed under the Apache License, Version 2.0 (the "License"); you *
6 * may not use this file except in compliance with the License. You *
7 * may obtain a copy of the License at: *
8 * *
9 * http://www.apache.org/licenses/LICENSE-2.0 *
10 * *
11 * Unless required by applicable law or agreed to in writing, software *
12 * distributed under the License is distributed on an "AS IS" BASIS, *
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or *
14 * implied. See the License for the specific language governing *
15 * permissions and limitations under the License. *
16 ***********************************************************************/
17
18 package org.apache.james.smtpserver;
19
20 import org.apache.james.util.mail.dsn.DSNStatus;
21
22 /***
23 * Handles EXPN command
24 */
25 public class ExpnCmdHandler implements CommandHandler {
26
27 /***
28 * The name of the command handled by the command handler
29 */
30 private final static String COMMAND_NAME = "EXPN";
31
32 /***
33 * Handler method called upon receipt of a EXPN command.
34 * This method informs the client that the command is
35 * not implemented.
36 *
37 * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession)
38 */
39 public void onCommand(SMTPSession session) {
40 String responseString = "502 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.SYSTEM_NOT_CAPABLE)+" EXPN is not supported";
41 session.writeResponse(responseString);
42 }
43
44 }