Problems with javamail

Question

Hello,
I am trying to use javamail, for sending emails and I am using NetBeans as the IDE, and IIS as the webserver.
I found a code online, from this webpage: http://www.javacommerce.com/displaypage.jsp?name=javamail.sql&id=18274
The webserver runs fine, and the code runs fine too, but the email doesnt get sent. maybe what parameters I pass are wrong, so I am attaching my code as well.
package emailexample;
import
com.sun.xml.internal.messaging.saaj.packaging.mime.MessagingExcep
tion;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
public class Main {
public static void postMail( String recipients[ ],
        String subject,
        String message ,
        String from) throws javax.mail.MessagingException
    boolean debug = false;
     //Set the host smtp address
     Properties props = new Properties();
     //props.put("mail.smtp.host", "localhost");
     props.put("mail.smtp.host", "localhost");
    // create some properties and get the default Session
    Session session = Session.getDefaultInstance(props, null);
    session.setDebug(debug);
    // create a message
    Message msg = new MimeMessage(session);
    // set the from and to address
    InternetAddress addressFrom;
        try {
            addressFrom = new InternetAddress(from);
    msg.setFrom(addressFrom);
    InternetAddress[] addressTo = new InternetAddress[recipients.length];
    for (int i = 0; i < recipients.length; i++)
        addressTo[i] = new InternetAddress(recipients);
msg.setRecipients(Message.RecipientType.TO, addressTo);
// Optional : You can also set your custom headers in the Email if you Want
msg.addHeader("MyHeaderName", "myHeaderValue");
// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(message, "text/plain");
Transport.send(msg);
} catch (AddressException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
public static void main(String[] args) {
try {
postMail(new String[]{"[email protected]"},
"testing java mail", "see it works :)",
"[email protected]");
} catch (javax.mail.MessagingException ex) {
Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
can someone please help?                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

Answer 1

The JavaMail FAQ has tips for debugging, pointers to sample programs, and much more. Start there.
In particular, a protocol trace will help us figure out what's not working.