Enviando correo electrónico en Android usando la API de JavaMail

Question

Me he referido a respuestas anteriores a una pregunta similar, pero da un ejemplo usando la configuración del servidor saliente de Gmail. Sin embargo Quiero usar la API JavaMail para el correo web que mi empresa está utilizando:

Servidor de salida: smtp.softcellindia.com

puerto:

Tipo de cifrado: ninguno

He intentado utilizar el siguiente código. Pero parece que no envía correos.

import javax.activation.DataHandler; 
import javax.activation.DataSource; 
import javax.mail.Message; 
import javax.mail.PasswordAuthentication; 
import javax.mail.Session; 
import javax.mail.Transport; 
import javax.mail.internet.InternetAddress; 
import javax.mail.internet.MimeMessage; 
import java.io.ByteArrayInputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.OutputStream; 
import java.security.Security; 
import java.util.Properties; 

public class MailSender extends javax.mail.Authenticator { 
    private String mailhost = "smtp.softcellindia.com"; 
    private String user; 
    private String password; 
    private Session session; 

    static { 
     Security.addProvider(new com.provider.JSSEProvider()); 
    } 

    public MailSender(String user, String password) { 
     this.user = user; 
     this.password = password; 

     Properties props = new Properties(); 
     props.setProperty("mail.transport.protocol", "smtp"); 
     props.setProperty("mail.host", mailhost); 
     props.put("mail.smtp.auth", "true"); 
     props.put("mail.smtp.port", "25"); 
     props.put("mail.smtp.socketFactory.port", "25"); 
     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 void sendMail(String subject, String body, String sender, String recipients) throws Exception { 
     try{ 
     MimeMessage message = new MimeMessage(session); 
     DataHandler handler = new DataHandler(new ByteArrayDataSource(body.getBytes(), "text/plain")); 
     message.setSender(new InternetAddress(sender)); 
     message.setSubject(subject); 
     message.setDataHandler(handler); 
     if (recipients.indexOf(',') > 0) 
      message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(recipients)); 
     else 
      message.setRecipient(Message.RecipientType.TO, new InternetAddress(recipients)); 
     Transport.send(message); 
     }catch(Exception e){ 

     } 
    } 

    public class ByteArrayDataSource implements DataSource { 
     private byte[] data; 
     private String type; 

     public ByteArrayDataSource(byte[] data, String type) { 
      super(); 
      this.data = data; 
      this.type = type; 
     } 

     public ByteArrayDataSource(byte[] data) { 
      super(); 
      this.data = data; 
     } 

     public void setType(String type) { 
      this.type = type; 
     } 

     public String getContentType() { 
      if (type == null) 
       return "application/octet-stream"; 
      else 
       return type; 
     } 

     public InputStream getInputStream() throws IOException { 
      return new ByteArrayInputStream(data); 
     } 

     public String getName() { 
      return "ByteArrayDataSource"; 
     } 

     public OutputStream getOutputStream() throws IOException { 
      throw new IOException("Not Supported"); 
     } 
    } 
} 

Answer 1

había finalmente tengo trabajo cambiando

props.setProperty("mail.host", mailhost);

a

props.setProperty("mail.smtp.host", mailhost);

yd Elegido siguientes líneas

props.put("mail.smtp.socketFactory.port", "25"); 
props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactor"); 
props.put("mail.smtp.socketFactory.fallback", "false"); 
props.setProperty("mail.smtp.quitwait", "false"); 

Answer 2

Cambio javax.net.ssl.SSLSocketFactory a javax.net.SocketFactory