Android JavaX-Mail Having SSL-Handshake-Exception

Question

Hope you all are safe. Recently I have implemented JavaX mail in my application. When I have implemented this code was working fine I was getting mails from my Webmail. But after few days I tried to run this code again, it start giving me the exceptions. I have checked the server-side nothing is changed. Can anyone please help me out to solve this problem.

public class GMailSender extends javax.mail.Authenticator {
    static {
        Security.addProvider(new JSSEProvider());
    }
    private final String user;
    private final String password;
    private final Session session;

    public GMailSender(String user, String password) {
        this.user = user;
        this.password = password;
        Properties props = new Properties();
        props.setProperty("mail.smtp.host", "xtenxion.com");
        props.setProperty("mail.smtp.ssl.enable", "true");
        props.setProperty("mail.transport.protocol", "smtp");
        props.put("mail.smtp.user", user);
        props.setProperty("mail.smtp.ssl.trust", "xtenxion.com");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");
        props.put("mail.smtp.starttls.enable", "true");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.socketFactory.fallback", "false");
        props.setProperty("mail.smtp.quitwait", "false");
        session = Session.getDefaultInstance(props, this);
    }

    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(user, password);
    }

    public synchronized Boolean sendMail(String subject, String body, String sender, String recipients) {
        try {
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(sender));
            message.addRecipient(Message.RecipientType.TO,new InternetAddress(recipients));
            message.setSubject(subject);
            message.setText(body);
            Transport.send(message);
            Log.e("SendMail","message sent successfully....");
            return true;
        } catch (Exception e) {
            Log.e("SendMail", e.getMessage(), e);
            return false;
        }
    }

}

Having this exception:

2021-04-29 16:05:11.810 14664-15084/com.xtenxion.letsplayqna E/SendMail: Could not connect to SMTP host: xtenxion.com, port: 465 javax.mail.MessagingException: Could not connect to SMTP host: xtenxion.com, port: 465; nested exception is: javax.net.ssl.SSLHandshakeException: Connection closed by peer at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1391) at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412) at javax.mail.Service.connect(Service.java:310) at javax.mail.Service.connect(Service.java:169) at javax.mail.Service.connect(Service.java:118) at javax.mail.Transport.send0(Transport.java:188) at javax.mail.Transport.send(Transport.java:118) at com.xtenxion.letsplayqna.mail.GMailSender.sendMail(GMailSender.java:56) at com.xtenxion.letsplayqna.activities.ForgetPassword_One_Activity$1$1.doInBackground(ForgetPassword_One_Activity.java:86) at com.xtenxion.letsplayqna.activities.ForgetPassword_One_Activity$1$1.doInBackground(ForgetPassword_One_Activity.java:73) at android.os.AsyncTask$2.call(AsyncTask.java:345) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:257) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636) at java.lang.Thread.run(Thread.java:784) Caused by: javax.net.ssl.SSLHandshakeException: Connection closed by peer at com.android.org.conscrypt.NativeCrypto.SSL_do_handshake(Native Method) at com.android.org.conscrypt.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:351) at com.android.org.conscrypt.OpenSSLSocketImpl.waitForHandshake(OpenSSLSocketImpl.java:665) at com.android.org.conscrypt.OpenSSLSocketImpl.getInputStream(OpenSSLSocketImpl.java:627) at com.sun.mail.smtp.SMTPTransport.initStreams(SMTPTransport.java:1449) at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1366) com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412)  at javax.mail.Service.connect(Service.java:310)  at javax.mail.Service.connect(Service.java:169)  at javax.mail.Service.connect(Service.java:118)  at javax.mail.Transport.send0(Transport.java:188)  at javax.mail.Transport.send(Transport.java:118)  at com.xtenxion.letsplayqna.mail.GMailSender.sendMail(GMailSender.java:56)  at com.xtenxion.letsplayqna.activities.ForgetPassword_One_Activity$1$1.doInBackground(ForgetPassword_One_Activity.java:86)  at com.xtenxion.letsplayqna.activities.ForgetPassword_One_Activity$1$1.doInBackground(ForgetPassword_One_Activity.java:73)  at android.os.AsyncTask$2.call(AsyncTask.java:345)  at java.util.concurrent.FutureTask.run(FutureTask.java:266)  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:257)  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)  at java.lang.Thread.run(Thread.java:784)

UPDATE:

public class GMailSender extends javax.mail.Authenticator {
    static {
        Security.addProvider(new JSSEProvider());
    }

    private final Session session;

    public GMailSender(String user, String password) {
        Properties props = new Properties();
        props.setProperty("mail.smtp.host", "xtenxion.com");
        props.setProperty("mail.smtp.ssl.trust", "xtenxion.com");
        props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.setProperty("mail.smtp.socketFactory.fallback", "false");
        props.setProperty("mail.smtp.port", "465");
        props.setProperty("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.auth", "true");
        props.put("mail.debug", "true");
        props.put("mail.store.protocol", "pop3");
        props.put("mail.transport.protocol", "smtp");
        session = Session.getInstance(props,
                new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication(user, password);
                    }
                });
        session.setDebug(true);
    }



    public synchronized Boolean sendMail(String subject, String body, String sender, String recipients) {
        try {
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(sender));
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(recipients));
            message.setSubject(subject);
            message.setText(body);
            Transport.send(message);
            Log.e("SendMail", "message sent successfully....");
            return true;
        } catch (Exception e) {
            Log.e("SendMail", "Error " + e.getMessage());
            return false;
        }
    }

}

Exception:

Error Could not connect to SMTP host: xtenxion.com, port: 465

I tried several code to connect with my Webmail but still failed. The Webmail address I'm using is ahmad@xtenxion.com.I don't know what's wrong and how to fix that.

 

Answer 1

How do I access Gmail with Jakarta Mail?:

String host = "smtp.gmail.com";
String username = "user";
String password = "passwd";
Properties props = new Properties();
props.setProperty("mail.smtp.host", host);
props.setProperty("mail.smtp.ssl.enable", "true");
// set any other needed mail.smtp.* properties here
Session session = Session.getInstance(props);
MimeMessage msg = new MimeMessage(session);
// set the message content here
Transport.send(msg, username, password);

The dot protocol properties should be smtps and imaps. However you shouldn't need to set them at all. Just remove them. The xtenxion.com ssl certificate needs to be added to your truststore.