Problem when sending java mail to all hotmail accounts

[SON1]

I am trying to send mail using java mail, however my mail towards all hotmails accounts are not delivered . The sender's address is not blacklisted and my email content is not filtered as spam by hotmail as i can send the same email content from my outlook using the same sender's email address.

I figure out it could be something wrong with my encoding/headers/parameters etc. I would like some help here. This is the code for my mail out class file. All my emails are html (text also not working for hotmail accounts). I have tried both base64 and 8bit encoding but with no luck. Needless to say that me emails towards other providers are delivered perfectly.


package congress3.services.automated;

import congress3.lib.Configuration;
import congress3.objects.Email;
import congress3.services.EmailService;
import java.util.List;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;


public class EmailEngine {

private static EmailEngine myInstance = new EmailEngine();
private EmailEngine() {}
public static EmailEngine getInstance() { return myInstance; }

public static void SendOutboundEmails() {

try{
List outgoingEmailList = EmailService.getInstance().getOutgoingEmailList();

if (outgoingEmailList != null ) {
for (int x=0 ; x < outgoingEmailList.size() ; x++ ) {
Email email = (Email) outgoingEmailList.get(x);
sendMessage(email);
Thread.sleep(1000);
}// end for
}
} catch(Exception x) { System.out.println(x);} //user try

}


private static void sendMessage(Email email) throws Exception {

boolean successful=true;

String to = email.getToField();
String subject = email.getSubjectField();
String message = email.getTextField();
String from = email.getFromField();


try {
Properties p = new Properties();
p.put("mail.host", Configuration.MAIL_HOST);
Session session = Session.getInstance(p, new MailAuthenticator());
MimeMessage msg = new MimeMessage(session);
Address fromAddress = new InternetAddress(from);
Address toAddress = new InternetAddress(to);


msg.setContent(message, "text/html ; charset=UTF-8");
msg.setSubject(subject, "UTF-8");
msg.addHeader("MIME-Version", "1.0");
msg.addHeader("Content-Transfer-Encoding", "BASE64");
msg.addHeader("Content-Type", "text/html");

msg.setFrom(fromAddress);
msg.setRecipient(Message.RecipientType.TO, toAddress);


Transport.send(msg);
} catch (MessagingException ex) {
System.out.println(ex);
successful=false;
}
EmailService.getInstance().markEmailAsSent(successful, true, email.getID());
}
}

class MailAuthenticator extends javax.mail.Authenticator {
public javax.mail.PasswordAuthentication getPasswordAuthentication() {
return new javax.mail.PasswordAuthentication(Configuration.MAIL_USERNAME,Configuration.MAIL_PASSWORD);
}
}

 

[sedj]

Which mx server are you using for hotmail ?

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[SON1]

as in the IP ? not sure what do you mean by your question.

 

[sedj]

Well java mail is not an MTA - so your MX Server must either be a local MTA, which will in effect forward your mail on to the target MTA, or you must directly connect to the target MTA your self.

For example, hotmail has 4 MX servers :

mx1.hotmail.com
mx2.hotmail.com
mx3.hotmail.com
mx4.hotmail.com

Are you connecting to these MX servers, or to your own local MTA ?

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[jlconde]

I have the same problem and only with hotmail. After many tests, I have gotten that I receive mails to hotmail, but only text/plain. If i set the header "text/html", i don't receive more email.

My code is:

import java.net.*;
import java.io.*;
import java.util.*;
import java.text.*;

import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.util.*;
import javax.naming.*;
import javax.naming.directory.*;
import javax.activation.*;

class Hotmail
{
public static void main(String[] args)
{
String body = "<html><body><table><tr><td>Hola maricón?</td></tr></table></body></html>";
//sendMail("root@plexus.kodics.de","jlconde@globalia-sistemas.com",
"globalia-sistemas.com","hotmail",body);
sendMail("root@plexus.kodics.de","jlconde15@hotmail.com",
"mail.hotmail.com","hotmail",body);
//sendMail("root@plexus.kodics.de","lillae25@yahoo.de","mx1.mail.
yahoo.com","hotmail",body);
}

public static void sendMail(String from,String to,String server,String subject,String text)
{

boolean debug = true;

//text = "Hello User,\nThese are your registration details.";

try
{
// create some properties and get the Session
Properties props = new Properties();
//props.put("mail.smtp.host", "mail.pivotal-systems.com");
props.put("mail.smtp.host", server);

Session session2 = Session.getInstance(props, null);
session2.setDebug(debug);

// create a message
MimeMessage msg = new MimeMessage(session2);
msg.setFrom(new InternetAddress(from));
InternetAddress[] address = { new InternetAddress(to) };
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(subject);
//msg.setText(text);

try
{
//msg.setDataHandler(new DataHandler(new ByteArrayDataSource(text,"text/html;charset=iso-8859-1")));
//msg.setHeader("Content-Transfer-Encoding", "base64");
msg.setDataHandler(new DataHandler( new ByteArrayDataSource(text, "text/plain;charset=iso-8859-1")));
}
catch (Exception e)
{
System.out.println("Error codificando base64");
}



msg.setHeader("Return-Path", "root@plexus.kodics.de");
msg.setHeader("X-Mailer", "sendhtml");
msg.setHeader("X-Priority", "3");
// set the Date: header
msg.setSentDate(new Date());


// send the message
Transport transport = session2.getTransport("smtp");
//transport.connect("mail.pivotal-systems.com", "martin@pivotal-systems.com", "free4all");
transport.connect();
msg.saveChanges();
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();

} catch (MessagingException mex) {
Exception e = mex.getNextException();
System.out.println("ERROR->"+mex.getMessage());
try
{
String error = e.toString();
String code = error.substring(error.indexOf(":")+2);
String msg = code.substring(code.indexOf(" ")+1);
code = code.substring(0,code.indexOf(" "));
System.out.println("CODE->"+code);
System.out.println("MSG->"+msg);
}
catch (Exception ex)
{
System.out.println("CODE->");
System.out.println("MSG->");
}

}
}

}

 

[Miros]

Certain mail servers won't pass on mail that has more than 6-10 recipients. Yahoo! won't, so it's possible hot mail won't either.

 

[SON1]

I determined that the problem with hotmail was that it filtered out emails with some kind of html tags. I made a W3 HTML compatible email, removing many microsoft office tags on the way - which maybe be the actuall cause of the problem.

C.

 

[Miros]

Yep, I'd bet on the Office tags being the problem!