title: javamail error: must issue starttls command first
body: <p>I'm trying to send a mail using javamail api using the below code: when I compile the class file I'm getting the below error which says 'must issue starttls command first' I have mentioned the error below. And also <code>getProvider()</code> function error I think so... I don' t know what the errors mean.</p>
  
  <pre><code>import javax.servlet.*;
  import javax.servlet.http.*;
  import java.io.*;
  import javax.mail.*;
  import javax.mail.internet.*;
  import javax.mail.event.*;
  import javax.mail.Authenticator;
  import java.net.*;
  import java.util.Properties;
  public class mailexample 
      {
    public static void main (String args[]) throws Exception {
  
      String from = args[0];
      String to = args[1];
  try
  {
  Properties props=new Properties();
  props.put("mail.transport.protocol", "smtp");
  props.put("mail.smtp.host","smtp.gmail.com");
  props.put("mail.smtp.port", "25");
  props.put("mail.smtp.auth", "true");
  javax.mail.Authenticator authenticator = new javax.mail.Authenticator()
      {
      protected javax.mail.PasswordAuthentication getPasswordAuthentication() 
          {
          return new javax.mail.PasswordAuthentication("123@gmail.com", "pass");
      }
  };
  Session sess=Session.getDefaultInstance(props,authenticator);
  sess.setDebug (true);
  Transport transport =sess.getTransport ("smtp");
  Message msg=new MimeMessage(sess);
  msg.setFrom(new InternetAddress(from));
  msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
  msg.setSubject("Hello JavaMail");
  msg.setText("Welcome to JavaMail");
  transport.connect();
  transport.send(msg);
  
  }
  catch(Exception e)
  {
  System.out.println("err"+e);
  }
  }
  }
  </code></pre>
  
  <p>error:</p>
  
  <pre>
  C:\Users\bobby\Desktop>java mailexample abc@gmail.com abc@gmail.
  com
  
  DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.s
  mtp.SMTPTransport,Sun Microsystems, Inc]
  DEBUG SMTP: useEhlo true, useAuth true
  DEBUG SMTP: useEhlo true, useAuth true
  
  DEBUG: SMTPTransport trying to connect to host "smtp.gmail.com", port 25
  
  DEBUG SMTP RCVD: 220 mx.google.com ESMTP q10sm12956046rvp.20
  
  DEBUG: SMTPTransport connected to host "smtp.gmail.com", port: 25
  
  DEBUG SMTP SENT: EHLO bobby-PC
  DEBUG SMTP RCVD: 250-mx.google.com at your service, [60.243.184.29]
  250-SIZE 35651584
  250-8BITMIME
  250-STARTTLS
  250 ENHANCEDSTATUSCODES
  
  
  DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.s
  mtp.SMTPTransport,Sun Microsystems, Inc]
  DEBUG SMTP: useEhlo true, useAuth true
  DEBUG SMTP: useEhlo true, useAuth true
  
  DEBUG: SMTPTransport trying to connect to host "smtp.gmail.com", port 25
  
  DEBUG SMTP RCVD: 220 mx.google.com ESMTP l29sm12930755rvb.16
  
  DEBUG: SMTPTransport connected to host "smtp.gmail.com", port: 25
  
  DEBUG SMTP SENT: EHLO bobby-PC
  DEBUG SMTP RCVD: 250-mx.google.com at your service, [60.243.184.29]
  250-SIZE 35651584
  250-8BITMIME
  250-STARTTLS
  250 ENHANCEDSTATUSCODES
  
  DEBUG SMTP SENT: MAIL FROM:
  DEBUG SMTP RCVD: 530 5.7.0 Must issue a STARTTLS command first. l29sm12930755rvb
  .16
  
  DEBUG SMTP SENT: QUIT
  errjavax.mail.SendFailedException: Sending failed;
    nested exception is:
          javax.mail.MessagingException: 530 5.7.0 Must issue a STARTTLS command f
  irst. l29sm12930755rvb.16
  </pre>