Smtp server password

Question

I have download de java mail example from sun, and I tryed to send a mail with a picture. But I couldn't send the mail. I recived a mail that say that the smtp server did not reach the recipient(s).
One thing I want to ask is: Don't I need to put the password of the smtp server? If yes, where?
And the other question is: What could be the reason of this failure?
Thanks

Answer 1

OK, but the problem is that I'm trying to run a program that I have download, and it seems that it doesn't use the function that you mention to connect the smtp server. Perhaps you could tell me how can I modify this program to put the pasword. Thanks.
import java.util.*;
import java.io.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
* sendfile will create a multipart message with the second
* block of the message being the given file.<p>
* This demonstrates how to use the FileDataSource to send
* a file via mail.<p>
* usage: <code>java sendfile <i>to from smtp file true|false</i></code>
* where <i>to</i> and <i>from</i> are the destination and
* origin email addresses, respectively, and <i>smtp</i>
* is the hostname of the machine that has smtp server
* running. <i>file</i> is the file to send. The next parameter
* either turns on or turns off debugging during sending.
* @author     Christopher Cotton
public class sendfile {
public static void main(String[] args) {
     if (args.length != 5) {
     System.out.println("usage: java sendfile <to> <from> <smtp> <file> true|false");
     System.exit(1);
     String to = args[0];
     String from = args[1];
     String host = args[2];
     String filename = args[3];
     boolean debug = Boolean.valueOf(args[4]).booleanValue();
     String msgText1 = "Sending a file.\n";
     String subject = "Sending a file";
     // create some properties and get the default Session
     Properties props = System.getProperties();
     props.put("mail.smtp.host", host);
     Session session = Session.getDefaultInstance(props, null);
     session.setDebug(debug);
     try {
     // create a message
     MimeMessage msg = new MimeMessage(session);
     msg.setFrom(new InternetAddress(from));
     InternetAddress[] address = {new InternetAddress(to)};
     msg.setRecipients(Message.RecipientType.TO, address);
     msg.setSubject(subject);
     // create and fill the first message part
     MimeBodyPart mbp1 = new MimeBodyPart();
     mbp1.setText(msgText1);
     // create the second message part
     MimeBodyPart mbp2 = new MimeBodyPart();
// attach the file to the message
     FileDataSource fds = new FileDataSource(filename);
     mbp2.setDataHandler(new DataHandler(fds));
     mbp2.setFileName(fds.getName());
     // create the Multipart and its parts to it
     Multipart mp = new MimeMultipart();
     mp.addBodyPart(mbp1);
     mp.addBodyPart(mbp2);
     // add the Multipart to the message
     msg.setContent(mp);
     // set the Date: header
     msg.setSentDate(new Date());
     // send the message
     Transport.send(msg);
     } catch (MessagingException mex) {
     mex.printStackTrace();
     Exception ex = null;
     if ((ex = mex.getNextException()) != null) {
          ex.printStackTrace();
}