javax.mail.AuthenticationFailedException: failed t

Question

This program attempts to send e-mail but throws a run time exception:

javax.mail.AuthenticationFailedException: failed to connect, no password specified?

Why am I getting this exception when I have supplied the correct username and password for authentication?

Both the sender and receiver have g-mail accounts. The sender and the receiver both have g-mail accounts. The sender has 2-step verification process disabled.

This is the code:

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;

class tester {
    public static void main(String args[]) {
        Properties props = new Properties();
        props.put("mail.smtp.host" , "smtp.gmail.com");
        props.put("mail.stmp.user" , "username");

        //To use TLS
        props.put("mail.smtp.auth", "true"); 
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.password", "password");
        //To use SSL
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class", 
            "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");


        Session session  = Session.getDefaultInstance( props , null);
        String to = "[e-mail]";
        String from = "[e-mail]";
        String subject = "Testing...";
        Message msg = new MimeMessage(session);
        try {
            msg.setFrom(new InternetAddress(from));
            msg.setRecipient(Message.RecipientType.TO, 
                new InternetAddress(to));
            msg.setSubject(subject);
            msg.setText("Working fine..!");
            Transport transport = session.getTransport("smtp");
            transport.connect("smtp.gmail.com" , 465 , "username", "password");
            transport.send(msg);
            System.out.println("fine!!");
        }
        catch(Exception exc) {
            System.out.println(exc);
        }
    }
}

Even after giving the password I get the exception. Why is it not authenticating?

Answer 1

Even when using an Authenticator I had to set mail.smtp.auth property to true. Here is a working example:

final Properties props = new Properties();
props.put("mail.smtp.host", config.getSmtpHost());
props.setProperty("mail.smtp.auth", "true");

Session session = Session.getDefaultInstance(props, new javax.mail.Authenticator()
{
  protected PasswordAuthentication getPasswordAuthentication()
  {
    return new PasswordAuthentication(config.getSmtpUser(), config.getSmtpPassword());
  }
});

Answer 2

See the 9 line of your code,it may be an error; it should be:

mail.smtp.user 

not

mail.stmp.user;

Answer 3

In addition to RMT's answer. I also had to modify the code a bit.

1. Transport.send should be accessed statically
2. therefor, transport.connect did not do anything for me, I only needed to set the connection info in the initial Properties object.

here is my sample send() methods. The config object is just a dumb data container.

public boolean send(String to, String from, String subject, String text) {
    return send(new String[] {to}, from, subject, text);
}

public boolean send(String[] to, String from, String subject, String text) {

    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.host", config.host);
    props.put("mail.smtp.user", config.username);
    props.put("mail.smtp.port", config.port);
    props.put("mail.smtp.password", config.password);

    Session session = Session.getInstance(props, new SmtpAuthenticator(config));

    try {
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress(from));
        InternetAddress[] addressTo = new InternetAddress[to.length];
        for (int i = 0; i < to.length; i++) {
            addressTo[i] = new InternetAddress(to[i]);
        }
        message.setRecipients(Message.RecipientType.TO, addressTo);
        message.setSubject(subject);
        message.setText(text);
        Transport.send(message);
    } catch (MessagingException e) {
        e.printStackTrace();
        return false;
    }
    return true;
}

Answer 4

It might be worth verifying that the gmail account hasn't been locked out due to several unsuccessful login attempts, you may need to reset your password. I had the same problem as you, and this turned out to be the solution.

Answer 5

You need to add the Object Authentication as the Parameter to the Session. such as

Session session = Session.getDefaultInstance(props, 
    new javax.mail.Authenticator(){
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication(
                "[e-mail]", "XXXXX");// Specify the Username and the PassWord
        }
});

now You will not get this kind of Exception....

javax.mail.AuthenticationFailedException: failed to connect, no password specified?

Answer 6

Try to create an javax.mail.Authenticator Object, and send that in with the properties object to the Session object.

Authenticator edit:

You can modify this to accept a username and password and you can store them there, or where ever you want.

public class SmtpAuthenticator extends Authenticator {
public SmtpAuthenticator() {

    super();
}

@Override
public PasswordAuthentication getPasswordAuthentication() {
 String username = "user";
 String password = "password";
    if ((username != null) && (username.length() > 0) && (password != null) 
      && (password.length   () > 0)) {

        return new PasswordAuthentication(username, password);
    }

    return null;
}

In your class where you send the email:

SmtpAuthenticator authentication = new SmtpAuthenticator();
javax.mail.Message msg = new MimeMessage(Session
                    .getDefaultInstance(emailProperties, authenticator));