01: /****************************************************************
02: * Licensed to the Apache Software Foundation (ASF) under one *
03: * or more contributor license agreements. See the NOTICE file *
04: * distributed with this work for additional information *
05: * regarding copyright ownership. The ASF licenses this file *
06: * to you under the Apache License, Version 2.0 (the *
07: * "License"); you may not use this file except in compliance *
08: * with the License. You may obtain a copy of the License at *
09: * *
10: * http://www.apache.org/licenses/LICENSE-2.0 *
11: * *
12: * Unless required by applicable law or agreed to in writing, *
13: * software distributed under the License is distributed on an *
14: * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
15: * KIND, either express or implied. See the License for the *
16: * specific language governing permissions and limitations *
17: * under the License. *
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 "
41: + DSNStatus.getStatus(DSNStatus.PERMANENT,
42: DSNStatus.SYSTEM_NOT_CAPABLE)
43: + " EXPN is not supported";
44: session.writeResponse(responseString);
45: }
46:
47: }
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