Java Programming

Hey gang!

Okay, I know this question has been asked many times before but here we go again. I've sifted through the forums and Googled myself blind but I still can't figure out why this won't work. I'm using Java Mail to send a message from a desktop application. I have extracted the part that sends the message to isolate it into it's own class and eliminate any other possible interference. When the code executes I get the classic javax.mail.AuthenticationFailedException along with numerous references to various points of code. I have checked the username and password by both logging in using another mail client and using it to log on to the domain directly. I am able to connect to the server using telnet. In general, the things I've read suggest that the problem is with how I authenticate but I can't seem to find the right combination. Any assistance would be appreciated!!

package simplemailtest;


import java.io.*;
import java.net.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import java.util.Properties;
import java.io.*;
import java.sql.*;
import javax.mail.PasswordAuthentication;

public class Main {

    public static void main(String[] args) {
       try
                {
                        String server = "YOUR MAIL SERVER HERE";
                        String from = "SENDERS EMAIL";
                        String to = "RECEIVERS EMAIL";
                        String cc = "CC EMAIL";
                        String subject = "I just wish this would work!";
                        String username = "YOUR USERNAME";
                        String password = "YOUR PASSWORD";
                        //String fileAttachment = "/home/user/file.txt";
                        String messageBody = 
                                "This email is sent automatically by a computer. Do NOT reply to it.\n\n" +
                                "Java Vendor: " + System.getProperty("java.vendor") + "\n" +
                                "Java vendor URL: " + System.getProperty("java.vendor.url" ) + "\n" +
                                "Java Version: " + System.getProperty("java.version" ) + "\n" +
                                "Operating System Architecture: " + System.getProperty("os.arch") + "\n" +
                                "Operating System Name: " + System.getProperty("os.name") + "\n" +
                                "Operating System Version: " + System.getProperty("os.version") +
                                "\n\n\n\n---------------------------\nEnd Of Message";
                        String messageBody2 = 
                                "This is the second part";
                        // Get system properties
                        Properties props = System.getProperties();
 
                        // Setup mail server
                        props.put("mail.smtp.host", server);
                        props.put("mail.smtp.auth", "true");
                        
                        new PasswordAuthentication(username, password);
                        
 
                        // Get session
                        Session sess = Session.getInstance(props);
 
                        // Define message
                        MimeMessage message = new MimeMessage(sess);
                        message.setFrom(new InternetAddress(from));
                        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
                        message.addRecipient(Message.RecipientType.CC, new InternetAddress(cc));
                        message.setSubject(subject);
 
                        // create the message part 
                        MimeBodyPart messageBodyPart = new MimeBodyPart();
 
                        //fill message
                        messageBodyPart.setText(messageBody);
 
                        Multipart multipart = new MimeMultipart();
                        multipart.addBodyPart(messageBodyPart);
 
                        // Part two is attachment
                        messageBodyPart = new MimeBodyPart();
                        messageBodyPart.setText(messageBody2);
                        Multipart multipart2 = new MimeMultipart();
                        multipart2.addBodyPart(messageBodyPart);
                        //DataSource source = new FileDataSource(fileAttachment);
                        //messageBodyPart.setDataHandler(new DataHandler(source));
                        //messageBodyPart.setFileName(new File(fileAttachment).getName());
                        multipart2.addBodyPart(messageBodyPart);
 
                        // Put parts in message
                        message.setContent(multipart);
 
                        // Send the message
                        Transport.send(message);
 
                        System.out.println("Message sent successfully");
 
                }
                catch (Exception e)
                {
                    e.printStackTrace();
                }

    }                                        

    }