Javamail Multipart not working on Outlook

package org.me.mail.Test;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
 
import java.io.File;
import java.util.*;
 
public class MailOnGmailnSSL
{
  String  d_email = "xxxxx@gmail.com",
          d_password = "xxxx",
          d_host = "smtp.gmail.com",
          d_port  = "465",
          m_to = "xxxx@companyName.com",
          m_subject = "Testing",
          m_text = "Hey, this is the test mail.";
  
  public static final String TXT_FILE = "c:\\temp\\text_contents.txt";
  public static final String HTML_FILE = "c:\\temp\\html_contents.html";
  public static final String IMAGE_FILE = "c:\\temp\\ch851118.gif";
  
  public MailOnGmailnSSL()
  {
      Properties props = new Properties();
      props.setProperty("proxySet","true");
      props.setProperty("socksProxyHost","proxy.sgp.hp.com");
      props.setProperty("socksProxyPort","8080");
      props.put("mail.smtp.user", d_email);
      props.put("mail.smtp.host", d_host);
      props.put("mail.smtp.port", d_port);
      props.put("mail.smtp.starttls.enable","true");
      props.put("mail.smtp.auth", "true");
      //props.put("mail.smtp.debug", "true");
      props.put("mail.smtp.socketFactory.port", d_port);
      props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
      props.put("mail.smtp.socketFactory.fallback", "false");
      
 
      SecurityManager security = System.getSecurityManager();
 
      try
      {
          Authenticator auth = new SMTPAuthenticator();
          Session session = Session.getInstance(props, auth);
          session.setDebug(true);
 
          MimeMessage msg = new MimeMessage(session);
          Multipart mp = new MimeMultipart("alternative");
          BodyPart bp = getFileBodyPart(TXT_FILE);
          mp.addBodyPart(bp);
          
          
          //msg.setText(m_text);
          msg.setSubject(m_subject);
          msg.setFrom(new InternetAddress(d_email));
          msg.addRecipient(Message.RecipientType.TO, new InternetAddress(m_to));
          
          Multipart mp_html = new MimeMultipart("related");
          BodyPart bp_html = getFileBodyPart(HTML_FILE);
          mp_html.addBodyPart(bp_html);
          
          String cid = "cid:image";
          MimeBodyPart mp_image = new MimeBodyPart();
          FileDataSource fd = new FileDataSource(IMAGE_FILE);
          mp_image.setFileName(IMAGE_FILE);
          mp_image.setText("Image 1");
          mp_image.setDataHandler(new DataHandler(fd));
          mp_image.setHeader("Content_id", "<"+cid+">");
          mp_image.setDisposition("inline");
          mp_html.addBodyPart(mp_image);
          
          BodyPart bp2 = new MimeBodyPart();
          bp2.setContent(mp_html);
          
          mp.addBodyPart(bp2);
          
          msg.setContent(mp);
          
          Transport.send(msg);
      }
      catch (Exception mex)
      {
          mex.printStackTrace();
      } 
  }
  
  private BodyPart getFileBodyPart(String txt_file) throws javax.mail.MessagingException {
 
	  BodyPart bp = new MimeBodyPart();
	  bp.setDataHandler(new DataHandler(new FileDataSource(txt_file)));
	  
	return bp;
}
 
public static void main(String[] args)
  {
      MailOnGmailnSSL blah = new MailOnGmailnSSL();
  }
 
  private class SMTPAuthenticator extends javax.mail.Authenticator
  {
      public PasswordAuthentication getPasswordAuthentication()
      {
          return new PasswordAuthentication(d_email, d_password);
      }
  }
}