Error Caused by: javax.mail.Authenticationfailedexception

Question

I’m trying to use the Commons Email library, but this is giving the following error

Exception in thread "main" org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.gmail.com:465
  at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1469)
  at org.apache.commons.mail.Email.send(Email.java:1496)
  at bibliotecaemail.UsandoBibliotecaDeEmail.main(UsandoBibliotecaDeEmail.java:21)
Caused by: javax.mail.AuthenticationFailedException: 534-5.7.14 <https://accounts.google.com/signin/continue?sarp=1&scc=1&plt=AKgnsbt
534-5.7.14 VYOHsiOCZ3lbdXJC3x-IYbSRirT9gsPyMC7T9gcBiL1LOm_HoPBk14WiBYh3uEioDQ9zI
534-5.7.14 PONsU-hvsTPui5RIjYcA5hbdGrtpMxnHbZ63pMfNHMKrZCV4MWOYhvlJdbShJg71>
534-5.7.14 Please log in via your web browser and then try again.
534-5.7.14  Learn more at
534 5.7.14  https://support.google.com/mail/answer/78754 a15sm5631279qkl.20 - gsmtp

  at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:965)
  at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:876)
  at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:780)
  at javax.mail.Service.connect(Service.java:388)
  at javax.mail.Service.connect(Service.java:246)
  at javax.mail.Service.connect(Service.java:195)
  at javax.mail.Transport.send0(Transport.java:254)
  at javax.mail.Transport.send(Transport.java:124)
  at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1459)
  ... 2 more 

Here is my code: (I hid the password and the e-mail for security)

package bibliotecaemail;
import org.apache.commons.mail.DefaultAuthenticator;
import org.apache.commons.mail.Email;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.SimpleEmail;

public class UsandoBibliotecaDeEmail {

    public static void main(String[] args) throws EmailException {

        Email email = new SimpleEmail();
        email.setHostName("smtp.gmail.com");
        email.setSmtpPort(465);
        email.setAuthenticator(new DefaultAuthenticator("[email protected]", "********"));
        email.setSSLOnConnect(true);
        email.setFrom("[email protected]");
        email.setSubject("Aula sobre uso de bibliotecas de terceiros");
        email.setMsg("Se etiver vendo este e-mail é porque o envio funcionou!");
        email.addTo("[email protected]");
        email.send();
        System.out.println("E-mail enviado!");

    }
}

OBS: I’ve already enabled access to mobile apps and still didn’t work.

Does anyone know what it can be?

Answer 1

I figured out what it is. In gmail you have to enable "app passwords". It generates a 16-digit password, it is default to enter in the code.

Here is the orientation > https://support.google.com/accounts/answer/185833?hl=pt-BR