I am trying to send mail from android /java using JavaMail (activation.jar + additionnal.jar + mail.jar). below is my code :

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.NoSuchProviderException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.io.UnsupportedEncodingException;
import javax.mail.MessagingException;
import javax.mail.Transport;


 protected Void doInBackground(Void... params) {
        // Perform networking operations here

// initialize-----------
        fromEmail = "[email protected]";
        fromPassword = "xxxxx";
        toEmailList .add( "[email protected]");
        emailSubject = "emailSubject";
        emailBody = "emailBody";

        emailProperties = System.getProperties();

        emailProperties.put("mail.smtp.auth",true ); 
        emailProperties.put("mail.smtp.host","smtp.gmail.com" ); 
        emailProperties.put("mail.smtp.port",587 ); 
        emailProperties.put("mail.smtp.ssl.enable",true ); 
        emailProperties.put("mail.smtp.ssl.required",true ); 
         

        javax.mail.Session session = javax.mail.Session.getInstance(emailProperties, new javax.mail.Authenticator() {
            @Override
            protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
                return new javax.mail.PasswordAuthentication(fromEmail, fromPassword);
            }
        });



// Create message
        mailSession =  javax.mail.Session.getDefaultInstance(emailProperties, null);
        emailMessage = new MimeMessage(mailSession);

        try {
            emailMessage.setFrom(new InternetAddress(fromEmail, fromEmail));
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }


        try {
            for (String toEmail : toEmailList) { 
                emailMessage.addRecipient(javax.mail.Message.RecipientType.TO,  new InternetAddress(toEmail));
                // emailMessage.addRecipient(javax.mail.Message.RecipientType.TO,  new InternetAddress(toEmail));
            }
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }



        try {
            emailMessage.setSubject(emailSubject);
            emailMessage.setContent(emailBody, "text/html");// for a html email
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        }
      

        //----- Send Message ---------
     Transport transport = null;
        try {
            transport = mailSession.getTransport("smtp");
            transport.connect(emailHost, fromEmail, fromPassword);
            transport.sendMessage(emailMessage, emailMessage.getAllRecipients());
            transport.close();
          

        } catch (NoSuchProviderException e) {
            throw new RuntimeException(e);
        } catch (MessagingException e) {
            throw new RuntimeException(e);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }



        return null;
    }

I am getting error at.catch (MessagingException e) with data:javax.mail.MessagingException: javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 25;
nested exception is:
java.net.ConnectException: failed to connect to smtp.gmail.com/173.194.76.108 (port 25) from /:: (port 55294): connect failed: ETIMEDOUT (Connection timed out)