Mail sent through JavaMail gets sent back
We use JavaMail to send e-mails out with PDF attachments. About 15% of the time, the mail comes back with the message javax.mail.MessagingException. When we send the same e-mail a few minutes later, it goes through without any problem.
Any ideas what could be causing this?
You need to look at the details. All MessagingException is telling you is that something
failed. You need to know what failed. Print out the details of the exception, possibly
including the stack trace. Also, you might want to turn on session debugging and look
at the protocol trace it prints out.
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C:\Program Files\Java\javamail-1.4\demo>java msgsend -o [email protected] -M 203.112.158.188 [email protected]
Exception in thread "main" java.lang.NoClassDefFoundError: msgsend
import java.io.*;
import java.net.InetAddress;
import java.util.Properties;
import java.util.Date;
import javax.mail.*;
import javax.mail.internet.*;
public class msgsend {
public static void main(String[] argv) {
String to, subject = null, from = null,
cc = null, bcc = null, url = null;
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String mailer = "msgsend";
String file = null;
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String record = null; // name of folder in which to record mail
boolean debug = false;
BufferedReader in =
new BufferedReader(new InputStreamReader(System.in));
int optind;
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if (argv[optind].equals("-T")) {
protocol = argv[++optind];
} else if (argv[optind].equals("-H")) {
host = argv[++optind];
} else if (argv[optind].equals("-U")) {
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password = argv[++optind];
} else if (argv[optind].equals("-M")) {
mailhost = argv[++optind];
} else if (argv[optind].equals("-f")) {
record = argv[++optind];
} else if (argv[optind].equals("-a")) {
file = argv[++optind];
} else if (argv[optind].equals("-s")) {
subject = argv[++optind];
} else if (argv[optind].equals("-o")) { // originator
from = argv[++optind];
} else if (argv[optind].equals("-c")) {
cc = argv[++optind];
} else if (argv[optind].equals("-b")) {
bcc = argv[++optind];
} else if (argv[optind].equals("-L")) {
url = argv[++optind];
} else if (argv[optind].equals("-d")) {
debug = true;
} else if (argv[optind].equals("--")) {
optind++;
break;
} else if (argv[optind].startsWith("-")) {
System.out.println(
"Usage: msgsend [[-L store-url] | [-T prot] [-H host] [-U user] [-P passwd]]");
System.out.println(
"\t[-s subject] [-o from-address] [-c cc-addresses] [-b bcc-addresses]");
System.out.println(
"\t[-f record-mailbox] [-M transport-host] [-a attach-file] [-d] [address]");
System.exit(1);
} else {
break;
try {
if (optind < argv.length) {
// XXX - concatenate all remaining arguments
to = argv[optind];
System.out.println("To: " + to);
} else {
System.out.print("To: ");
System.out.flush();
to = in.readLine();
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System.out.print("Subject: ");
System.out.flush();
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if (mailhost != null)
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InternetAddress.parse(to, false));
if (cc != null)
msg.setRecipients(Message.RecipientType.CC,
InternetAddress.parse(cc, false));
if (bcc != null)
msg.setRecipients(Message.RecipientType.BCC,
InternetAddress.parse(bcc, false));
msg.setSubject(subject);
String text = collect(in);
if (file != null) {
// Attach the specified file.
// We need a multipart message to hold the attachment.
MimeBodyPart mbp1 = new MimeBodyPart();
mbp1.setText(text);
MimeBodyPart mbp2 = new MimeBodyPart();
mbp2.attachFile(file);
MimeMultipart mp = new MimeMultipart();
mp.addBodyPart(mbp1);
mp.addBodyPart(mbp2);
msg.setContent(mp);
} else {
// If the desired charset is known, you can use
// setText(text, charset)
msg.setText(text);
msg.setHeader("X-Mailer", mailer);
msg.setSentDate(new Date());
// send the thing off
Transport.send(msg);
System.out.println("\nMail was sent successfully.");
// Keep a copy, if requested.
if (record != null) {
// Get a Store object
Store store = null;
if (url != null) {
URLName urln = new URLName(url);
store = session.getStore(urln);
store.connect();
} else {
if (protocol != null)
store = session.getStore(protocol);
else
store = session.getStore();
// Connect
if (host != null || user != null || password != null)
store.connect(host, user, password);
else
store.connect();
// Get record Folder. Create if it does not exist.
Folder folder = store.getFolder(record);
if (folder == null) {
System.err.println("Can't get record folder.");
System.exit(1);
if (!folder.exists())
folder.create(Folder.HOLDS_MESSAGES);
Message[] msgs = new Message[1];
msgs[0] = msg;
folder.appendMessages(msgs);
System.out.println("Mail was recorded successfully.");
} catch (Exception e) {
e.printStackTrace();
public static String collect(BufferedReader in) throws IOException {
String line;
StringBuffer sb = new StringBuffer();
while ((line = in.readLine()) != null) {
sb.append(line);
sb.append("\n");
return sb.toString();
So please help me to resolve that error.The directory that contains msgsend.class (usually the current directory)
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<p>
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