i run the programme, but i cann't give email from mailbox, why, who can help me ,thanks in advance.


Properties props = new Properties();
        Session sendMailSession;
        Transport transport;
        //props.put("mail.smtp.host", server);

        props.put("mail.smtp.ip", "202.108.5.81");
        props.put("mail.smtp.port", "25");


       sendMailSession = Session.getDefaultInstance(props,null);
       sendMailSession.setDebug(true);
       Message newMessage;


    newMessage = new MimeMessage(sendMailSession);



       try
       {
           InternetAddress addressFrom = new InternetAddress(user);
           newMessage.setFrom(addressFrom);

           InternetAddress[] addressTo = new InternetAddress[2];
           addressTo[0] = new InternetAddress("heguang_1983");
           addressTo[1] = new InternetAddress("heguang_1983");

           newMessage.setRecipients(Message.RecipientType.TO, addressTo);

           newMessage.setSubject("SMTPcheck"); //ÉèÖÃÖ÷Ìâ

           newMessage.setSentDate(new Date()); //ÉèÖ÷¢ËÍʱ¼ä

           newMessage.setContent(text,"text/plain"); //ÉèÖ÷¢ËÍÄÚÈÝ

           PrintStream ps ;
           ps = sendMailSession.getDebugOut();

           FileOutputStream fs ;
           try
           {
               fs = new FileOutputStream("C:\\smtpMessage.txt");
               ps = new PrintStream(fs);
           }
           catch(Exception e)
           {
           }
           if(ps!=null)
           {
              System.setOut(ps);
           }
           System.out.println("SMTPÕï¶Ï±¨¸æ");



           Transport.send(newMessage);

           }
           catch (AuthenticationFailedException e)
           {
             System.out.println("µÇ½ʧ°Ü£¬Çë¼ì² éÓû§ÃûºÍÃÜÂë");
             this.jTextArea1.setText("µÇ½ʧ°Ü£¬Ç렼ì²éÓû§ÃûºÍÃÜÂë");

             return false;
           }
           catch (IllegalWriteException e)
           {
               System.out.println("µÇ½ʧ°Ü£¬Çë¼ì² éÓû§ÃûºÍÃÜÂë");
               this.jTextArea1.setText("µÇ½ʧ°Ü£¬Ç렼ì²éÓû§ÃûºÍÃÜÂë");

               return false;
           }
           catch(SMTPSendFailedException e)
           {
               System.out.println("·¢Ê§°Ü");
               this.jTextArea1.setText("·¢ËÍʧ°Ü");
               //sb.append("Çë¼ì²â½ÓÊÜÕ˺Å");
               return false;
           }
           catch(SendFailedException e)
          {
               System.out.println("ÊÕ¼þÈ˵ØÖ·²»´æÔ Ú,¼ì²âÕ˺Å");
               this.jTextArea1.setText("ÊÕ¼þÈ˵ØÖ·²» ´Ã¦Ã”Ú,¼ì²âÕ˺Å");
               return false;
               //sb.append("ÊÕ¼þÈ˵ØÖ·²»´æÔÚ,¼ì² âÕ˺Å");
           }
          catch (AddressException e)
          {
            //e.printStackTrace();
              System.out.println("·þÎñÆ÷ÓòÃû´íÎó") ;
          }
          catch (MessagingException e)
          {
              System.out.println("·þÎñÆ÷ÓòÃû´íÎó") ;
              //sb.append("·þÎñÆ÷ÓòÃû´íÎó");
              this.jTextArea1.setText("·þÎñÆ÷ÓòÃû´íà ŽÃ³");
              return false;
          }
       return true;