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Thread: sending multiPart mail through yahoo mail cause javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;

  1. #1
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    Default sending multiPart mail through yahoo mail cause javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;

    It have been long since I asked for help on the forums but latly I have been Struggling with this problem for a couple of days.
    read all the forums did all ppl did but no change.
    What the H I am doing wrong ?
    by the way I am using javamail 5.1 and java 8 and already send text msg so no problem with properties

    here is my code


    // Get system properties
        Properties properties = System.getProperties();
        // Setup mail server
        properties.put("mail.smtp.starttls.enable", "true");
        properties.put("mail.smtp.host", mailHost);
        properties.put("mail.smtp.user", mailUserName);
        properties.put("mail.smtp.password", mailPassword);
        properties.put("mail.smtp.port", "587");
        properties.put("mail.smtp.auth", "true");
     
        // Get the default Session object.
        Session session = Session.getDefaultInstance(properties);
     
        try{
            // Create a default MimeMessage object.
            MimeMessage message = new MimeMessage(session);
     
            // Set From: header field of the header.
            message.setFrom(new InternetAddress(mD.mailUserName));
     
            // Set To: header field of the header.
            message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
     
            Multipart multiPart = new MimeMultipart();
            MimeBodyPart textPart = new MimeBodyPart();
            textPart.setText("This is actual message", "text/html; charset=utf-8");
     
            MimeBodyPart htmlPart = new MimeBodyPart();
            htmlPart.setContent(html, "text/html; charset=utf-8");
            multiPart.addBodyPart(textPart);
            multiPart.addBodyPart(htmlPart);
            message.setContent(multiPart);
     
            // Send message
            Transport transport = session.getTransport("smtp");
            transport.connect( mD.mailHost,mD.mailUserName,mD.mailPassword);
     
            ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
            Thread.currentThread().setContextClassLoader( javax.mail.Session.class.getClassLoader() );
            try
            {
                message.setContent(multiPart);
                //transport.sendMessage(message, message.getAllRecipients());
                Transport.send(message, message.getAllRecipients());
            }
            catch (MessagingException e)
            {
                e.printStackTrace();
            }
            finally
            {
                Thread.currentThread().setContextClassLoader(classLoader);
            }
            transport.close();
        }
        catch (MessagingException mex)
        {
            mex.printStackTrace();
        }


  2. #2
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    Default Re: sending multiPart mail through yahoo mail cause javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;

    Welcome to the forum! Thanks for taking the time to learn how to post code correctly. If you haven't already, please read this topic to learn other useful info for new members.

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