Problems sending email using javax.mail.*

Question

I need to send an email from an application I am working on. I am using the features of the javax.mail package to do so. In looking at the code I am unsure why this is not working. This is my first time using this package so it might be something silly I am missing so any of your thoughts are appreciated. The code is as follows:
import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;
public class EmailTester {
     public static void main(String[] args) {
          try {
               //Set the smtp address
               Properties props = new Properties();
               props.put("mail.smtp.host", args[0] );
               // get the default Session
               Session session = Session.getDefaultInstance(props, null);
               session.setDebug(true);
               // create a message for this session
               Message msg = new MimeMessage(session);
               // set the from and to address
               InternetAddress from =
                    new InternetAddress( args[1] );
               InternetAddress[] to = new InternetAddress[1];
               to[0] = new InternetAddress( args[2] );
               msg.setFrom(from);
               msg.setRecipients(Message.RecipientType.TO, to);
               // set the subject and content type
               msg.setSubject("subject");
               msg.setContent("this is my test email", "text/plain");
               // send the email
               Transport.send(msg);
          catch (MessagingException me) {

Answer 1

I have an EMail class that I use at:
http://www.discoverteenergy.com/files/EMail.java
Feel free to use it or compare against your code to see what is different.