1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You 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 implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.net.smtp;
19
20 import java.io.IOException;
21
22 /**
23 * SMTPConnectionClosedException is used to indicate the premature or unexpected closing of an SMTP connection resulting from a
24 * {@link org.apache.commons.net.smtp.SMTPReply#SERVICE_NOT_AVAILABLE SMTPReply.SERVICE_NOT_AVAILABLE } response (SMTP reply code 421) to a failed SMTP command.
25 * This exception is derived from IOException and therefore may be caught either as an IOException or specifically as an SMTPConnectionClosedException.
26 *
27 *
28 * @see SMTP
29 * @see SMTPClient
30 */
31 public final class SMTPConnectionClosedException extends IOException {
32
33 private static final long serialVersionUID = 626520434326660627L;
34
35 /** Constructs a SMTPConnectionClosedException with no message */
36 public SMTPConnectionClosedException() {
37 }
38
39 /**
40 * Constructs a SMTPConnectionClosedException with a specified message.
41 *
42 * @param message The message explaining the reason for the exception.
43 */
44 public SMTPConnectionClosedException(final String message) {
45 super(message);
46 }
47
48 }