import java.util.Date;

import java.util.Properties;

import javax.mail.Address;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.SendFailedException;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

// import javax.activation.*;

/**

 * msgsendsample creates a very simple text/plain message and sends it.

 *

 * usage: java msgsendsample to from smtphost true|false

 * where to and from are the destination and origin email

 * addresses, respectively, and smtphost is the hostname of the machine

 * that has the smtp server running. The last parameter either turns on or turns

 * off debugging during sending.

 * 

 * @author Max Spivak

 */

public class MainClass {

  static String msgText = "This is a message body.\nHere's the second line.";

  public static void main(String[] args) {

    if (args.length != 4) {

      usage();

      System.exit(1);

    }

    System.out.println();

    String to = args[0];

    String from = args[1];

    String host = args[2];

    boolean debug = Boolean.valueOf(args[3]).booleanValue();

    // create some properties and get the default Session

    Properties props = new Properties();

    props.put("mail.smtp.host", host);

    if (debug)

      props.put("mail.debug", args[3]);

    Session session = Session.getInstance(props, null);

    session.setDebug(debug);

    try {

      // create a message

      Message msg = new MimeMessage(session);

      msg.setFrom(new InternetAddress(from));

      InternetAddress[] address = { new InternetAddress(args[0]) };

      msg.setRecipients(Message.RecipientType.TO, address);

      msg.setSubject("JavaMail APIs Test");

      msg.setSentDate(new Date());

      // If the desired charset is known, you can use

      // setText(text, charset)

      msg.setText(msgText);

      Transport.send(msg);

    } catch (MessagingException mex) {

      System.out.println("\n--Exception handling in msgsendsample.java");

      mex.printStackTrace();

      System.out.println();

      Exception ex = mex;

      do {

        if (ex instanceof SendFailedException) {

          SendFailedException sfex = (SendFailedException) ex;

          Address[] invalid = sfex.getInvalidAddresses();

          if (invalid != null) {

            System.out.println("    ** Invalid Addresses");

            if (invalid != null) {

              for (int i = 0; i <>