Erro Javamail

YXJtc29sbzEAYXJtc29sbzEAQXJtc29sbzE=

A1 NO generic failure

Exception in thread “main” javax.mail.AuthenticationFailedException: generic fai

lure

at com.sun.mail.imap.IMAPStore.protocolConnect(IMAPStore.java:613)

at javax.mail.Service.connect(Service.java:291)

at saveAttachments.main(saveAttachments.java:30)

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

public class saveAttachments {

  public static void main (String args[]) throws Exception {
    String host = "servidor.cptec.inpe.br";
    String username = "usuario";
    String password = "senha";
    int port = 993;

    Authenticator auth = new MyAuthenticator();

    // Create empty properties
    Properties props = new Properties();
    props.put("mail.imap.host", host);
    props.put("mail.imap.auth", "true");

    // Get session
    Session session = Session.getDefaultInstance(props, auth);
//    Session session = Session.getDefaultInstance(props, null);
    session.setDebug(true);

    // Get the store
    Store store = session.getStore("imaps");

    // Connect to store
    store.connect(host, port, username, password);

    // Get folder
    Folder folder = store.getFolder("INBOX");

    // Open read-only
    folder.open(Folder.READ_ONLY);

    BufferedReader reader = new BufferedReader (
      new InputStreamReader(System.in));

    // Get directory
    Message message[] = folder.getMessages();

    for (int i=0, n=message.length; i<n; i++) {

       // Display from field and subject
       System.out.println(i + ": " + message[i].getFrom()[0] 
         + "\t" + message[i].getSubject());

      System.out.println("Do you want to read message? [YES to read/QUIT to end]");
      String line = reader.readLine();
      if ("YES".equals(line)) {

        // Display message content
        System.out.println(message[i].getContent());

      } else if ("QUIT".equals(line)) {
        break;
      }

/*
Multipart mp = (Multipart)message.getContent();

for (int i=0, n=multipart.getCount(); i<n; i++) {
  Part part = multipart.getBodyPart(i));

  String disposition = part.getDisposition();

  if ((disposition != null) && 
      ((disposition.equals(Part.ATTACHMENT) || 
       (disposition.equals(Part.INLINE))) {
    saveFile(part.getFileName(), part.getInputStream());
  }
}
*/

    }

    // Close connection 
    folder.close(false);
    store.close();
  }

public static class MyAuthenticator extends Authenticator {

  public PasswordAuthentication getPasswordAuthentication() {

    String username, password;

    username = "usuario";
    password = "senha";

    return new PasswordAuthentication(username, password);
  }

}

}