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

user_648138 0
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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 = "me@gmail.com";
        String from = "from@gmail.com";
        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?

jakarta-mail smtp gmail java
14 Answers

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.

user_12651580

First of all, enable the less secure app in your Gmail account from which you will send emails using this link:- https://myaccount.google.com/lesssecureapps?pli=1

Then you simply add the following code in your session creation. It will work fine then. 

Session mailSession = Session.getInstance(props, new javax.mail.Authenticator(){
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(
                    "your_email", "your_password");// Specify the Username and the PassWord
            }
        });

if you want the more elaborated one use the following:-

import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.NoSuchProviderException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class MailSender {

    public Properties mailProperties() {
        Properties props = new Properties();

        props.setProperty("mail.transport.protocol", "smtp");
        props.setProperty("mail.smtp.host", "smtp.gmail.com");
        props.setProperty("mail.smtp.port", "587");
        props.setProperty("mail.smtp.user", "your_email");
        props.setProperty("mail.smtp.password", "your_password");
        props.setProperty("mail.smtp.starttls.enable", "true");
        props.setProperty("mail.smtp.auth", "true");

        return props;
    }

    public String sendMail(String from, String to, String subject, String msgBody) {
        Properties props = mailProperties();
        Session mailSession = Session.getInstance(props, new javax.mail.Authenticator(){
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(
                    "your_email", "your_password");// Specify the Username and the PassWord
            }
        });

        mailSession.setDebug(false);

        try {
            Transport transport = mailSession.getTransport();

            MimeMessage message = new MimeMessage(mailSession);
            message.setSubject(subject);
            message.setFrom(new InternetAddress(from));
            message.addRecipients(Message.RecipientType.TO, to);

            MimeMultipart multipart = new MimeMultipart();

            MimeBodyPart messageBodyPart = new MimeBodyPart();

            messageBodyPart.setContent(msgBody, "text/html");

            multipart.addBodyPart(messageBodyPart);
            message.setContent(multipart);

            transport.connect();
            transport.sendMessage(message, message.getRecipients(Message.RecipientType.TO));
            transport.close();
            return "SUCCESS";
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
            return "INVALID_EMAIL";
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        return "ERROR";
    }

    public static void main(String args[]) {
        System.out.println(new MailSender().sendMail("your_email/from_email", "to_email", "Subject", "Message"));
    }
}

Hope! it helps. Thanks!

user_81997380

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

mail.smtp.user

not

mail.stmp.user;
user_105436550
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