I am making an web app that can send an email, in this code I used yahoo mail to send.

I tried some solutions but they did not have me much:

1. [Getting the "javax.mail.AuthenticationFailedException: failed to connect" Error](https://stackoverflow.com/questions/32254289/getting-the-javax-mail-authenticationfailedexception-failed-to-connect-error)
2. [javax.mail.AuthenticationFailedException: failed to connect, no password specified?](https://stackoverflow.com/questions/6610572/javax-mail-authenticationfailedexception-failed-to-connect-no-password-specifi)

Here is my code:

```
try {

        Properties props = new Properties();
        props.put("mail.smtp.host", "smtp.mail.yahoo.com"); // for gmail use smtp.gmail.com
        props.put("mail.smtp.auth", "true");
        props.put("mail.debug", "true");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.port", "465");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");

        Session mailSession = Session.getInstance(props, new javax.mail.Authenticator() {

            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("my_mail@yahoo.com.vn", "my_pwd");
            }
        });

        mailSession.setDebug(true); // Enable the debug mode

        Message msg = new MimeMessage(mailSession);

        //--[ Set the FROM, TO, DATE and SUBJECT fields
        msg.setFrom(new InternetAddress("my_mail@yahoo.com.vn"));
        msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse("other@mail"));
        msg.setSentDate(new Date());
        msg.setSubject("Hello World!");

        //--[ Create the body of the mail
        msg.setText("Hello from my first e-mail sent with JavaMail");

        //--[ Ask the Transport class to send our mail message
        Transport.send(msg);
        return true;

    } catch (Exception E) {
        System.out.println("Oops something has gone pearshaped!");
        System.out.println(E);
        return false;
    }

```

And here is the debug code:

```
DEBUG: JavaMail version 1.4.2
DEBUG: successfully loaded resource: /META-INF/javamail.default.providers
DEBUG: Tables of loaded providers
DEBUG: Providers Listed By Class Name: {com.sun.mail.smtp.SMTPSSLTransport=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems, Inc], com.sun.mail.smtp.SMTPTransport=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc], com.sun.mail.imap.IMAPSSLStore=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsystems, Inc], com.sun.mail.pop3.POP3SSLStore=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun Microsystems, Inc], com.sun.mail.imap.IMAPStore=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc], com.sun.mail.pop3.POP3Store=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]}
DEBUG: Providers Listed By Protocol: {imaps=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsystems, Inc], imap=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc], smtps=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems, Inc], pop3=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc], pop3s=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun Microsystems, Inc], smtp=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]}
DEBUG: successfully loaded resource: /META-INF/javamail.default.address.map
DEBUG: setDebug: JavaMail version 1.4.2
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.mail.yahoo.com", port 465, isSSL false
220 smtp.mail.yahoo.com ESMTP ready
DEBUG SMTP: connected to host "smtp.mail.yahoo.com", port: 465

EHLO DESKTOP-132ABCD
250-smtp.mail.yahoo.com
250-PIPELINING
250-SIZE 41697280
250-8 BITMIME
250 AUTH PLAIN LOGIN XOAUTH2 XYMCOOKIE
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "SIZE", arg "41697280"
DEBUG SMTP: Found extension "8", arg "BITMIME"
DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN XOAUTH2 XYMCOOKIE"
DEBUG SMTP: Attempt to authenticate
DEBUG SMTP: check mechanisms: LOGIN PLAIN DIGEST-MD5 
AUTH LOGIN
//some code
535 5.7.0 (#MBR1240) Please verify your account by going to https://login.yahoo.com
Oops something has gone pearshaped!
javax.mail.AuthenticationFailedException: failed to connect

```

Please help me, thank you so much!