Issues with sending thru Gmail using Java

Question

I have what appears to be very simple code to try and send an email from my Java app using my Gmail account. When I run it, it crashes with the exception javax.mail.AuthenticationFailedException. Here is the code:

    // Recipient's email ID needs to be mentioned.
    String to = "[email protected]";

    // Sender's email ID needs to be mentioned
    String from = "[email protected]";

    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.gmail.com");
    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,
        new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("[email protected]","password");
            }
        });

    try{
        // Create a default MimeMessage object.
        MimeMessage message = new MimeMessage(session);

        // Set From: header field of the header.
        message.setFrom(new InternetAddress(from));

        // Set To: header field of the header.
        message.addRecipient(Message.RecipientType.TO,
                  new InternetAddress(to));

        // Set Subject: header field
        message.setSubject("Test Subject");

        // Now set the actual message
        message.setText("this is a test");

        // Send message
        Transport.send(message);
        System.out.println("Sent message successfully....");
    }catch (MessagingException mex) {
        System.out.println (mex) ;
        mex.printStackTrace();
    }

hamayoun · Accepted Answer · 2015-03-31 18:49:24Z

1

Issue was that I was using 2 step verification in Gmail. Solution is to use an application specific password (ASP): https://accounts.google.com/IssuedAuthSubTokens?hide_authsub=1

answered Mar 31, 2015 at 18:49

hamayoun

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Comments

Vladimir · Accepted Answer · 2015-03-31 18:23:46Z

0

I was able to use gmail to send messages using TLS, with the following properties:

props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");

perhaps it will work for you.

answered Mar 31, 2015 at 18:23

Vladimir

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