javax.mail.AuthenticationFailedException: 535 5.7.3 Authentication unsuccessful

Question

I am sending e email using an SMTP error . I am getting Authentication unsuccessful. The username and password are correct. Am I doing something wrong.

The error log

Answer 1

Same issue resolve by enabling IMAP of the sender email account in Exchange Control Panel (ECP) of outlook mail admin.

Answer 2

Go to your Microsoft admin account and turn off the multi-factor authentication.

By default it is enabled. Once you disable the multi-factor authentication then it works fine for me.

Answer 3

It looks like the problem in how you do the session part...

try doing this:

private Properties emailPorperties;

... ...

    emailPorperties = new Properties();
    emailPorperties.put("mail.smtp.host", "your host");
    emailPorperties.put("mail.smtp.socketFactory.port", "your port");
    emailPorperties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
    emailPorperties.put("mail.smtp.auth", "true");
    emailPorperties.put("mail.smtp.port", "your port");
    emailPorperties.put("mail.smtp.ssl.enable", "true");
    emailSession = Session.getInstance(emailPorperties, new Authenticator() {

            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                System.out.println("Authenticating");
                return new PasswordAuthentication(USER_NAME, PASSWORD);
            }

        });

Answer 4

Hello i've got the same issue in the past. So to solve it i have to connect on the webmail of my outlook or exchage and i noticed that these connexions were stopped by the server so inside i confirm that these transactions was mine. So u have also to do it usually every 2 month in my case.

The problem is not in the code. The problem occurs because something is wrong with the configuration of the mailboxes I believe.

Answer 5

Had the same issue. It's an MS Exchange error that you receive. You are probably not allowed to use your email to send an email via a relay. The administrator of the Exchange server needs to give the rights to do that.

It has nothing to do with a configuration problem on the Java side.