title: Sending mail not working and showing Exception
body: <p>My program is below:</p>
  
  <pre><code>/*
   * To change this template, choose Tools | Templates
   * and open the template in the editor.
   */
  
  /**
   *
   * @author Cygnet
   */
      import java.util.Properties;
  
      import javax.mail.Message;
      import javax.mail.MessagingException;
      import javax.mail.Session;
      import javax.mail.Transport;
      import javax.mail.Message.RecipientType;
      import javax.mail.internet.AddressException;
      import javax.mail.internet.InternetAddress;
      import javax.mail.internet.MimeMessage;
      public class SendMail {
          private String from;
          private String to;
          private String subject;
          private String text;
  
          public SendMail(String from, String to, String subject, String text){
              this.from = from;
              this.to = to;
              this.subject = subject;
              this.text = text;
                      System.out.println("your massege running here");
          }
  
          public void send(){
  
              Properties props = new Properties();
              props.put("mail.smtp.host", "smtp.cygnet3.com");
              props.put("mail.smtp.port", "8383");
  
              Session mailSession = Session.getDefaultInstance(props);
              Message simpleMessage = new MimeMessage(mailSession);
  
              InternetAddress fromAddress = null;
              InternetAddress toAddress = null;
              try {
                  fromAddress = new InternetAddress(from);
                  toAddress = new InternetAddress(to);
              } catch (AddressException e) {
                  // TODO Auto-generated catch block
                  e.printStackTrace();
              }
  
              try {
                  simpleMessage.setFrom(fromAddress);
                  simpleMessage.setRecipient(RecipientType.TO, toAddress);
                  simpleMessage.setSubject(subject);
                  simpleMessage.setText(text);
                  Transport.send(simpleMessage);
              } catch (MessagingException e) {
                  // TODO Auto-generated catch block
                  e.printStackTrace();
              }       
                  }
              public static void main(String[] args) {    
              String from = "sender@example.com";
              String to = "recipient@example.com";
              String subject = "Hi server problem";
              String message = "I could not find anything in the coding";
              SendMail sendMail = new SendMail(from, to, subject, message);
              sendMail.send();
                      System.out.println("Your massege is successfully sent");
          }        
  
      }
  </code></pre>
  
  <p>I am getting the following exception:</p>
  
  <pre><code>run-main:
  your massege running here
  javax.mail.MessagingException: Exception reading response;
    nested exception is:
          java.net.SocketException: Connection reset
          at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1462)
          at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1260)
          at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
          at javax.mail.Service.connect(Service.java:275)
          at javax.mail.Service.connect(Service.java:156)
          at javax.mail.Service.connect(Service.java:105)
          at javax.mail.Transport.send0(Transport.java:168)
          at javax.mail.Transport.send(Transport.java:98)
          at SendMail.send(SendMail.java:58)
  Your massege is successfully sent
          at SendMail.main(SendMail.java:71)
  Caused by: java.net.SocketException: Connection reset
          at java.net.SocketInputStream.read(SocketInputStream.java:168)
          at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:97)
          at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
          at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
          at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:75)
          at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1440)
          ... 9 more
  BUILD SUCCESSFUL (total time: 2 minutes 15 seconds)
  </code></pre>
  
  <p>Please help me, what mistake am I doing?  I don't want to do username and password authentication, my port number and user ID is working fine.</p>