Urgent!!!! Problem in sending mail through yahoo mail server

Question

Hi
I have a yahoo account and I want to send email through yahoo mail server
using my java program. My program supports SMTP server authentication.
But when I connect to the yahoo mail server(smtp.mail.yahoo.com) I got this error
javax.mail.MessagingException: 521 yahoo.com closing transmission channel. You
must be pop-authenticated before you can use this smtp server, and you must use
your yahoo mail address for the Sender/From field.
This is my program
import javax.mail.*;
import java.util.*;
import javax.mail.internet.*;
import javax.mail.event.*;
import java.io.*;
public class JavaMailUserAgent
     Properties properties;
     Session session;
     Message message;
     JavaMailUserAgent(String mailHost,String smtpUsername,String smtpPassword) throws Exception
          properties=new Properties();
          properties.put("mail.smtp.host",mailHost);
          ServerAuthenticate auth=new ServerAuthenticate(smtpUsername,smtpPassword);
          session=Session.getInstance(properties,auth);
          message=new MimeMessage(session);
     } //**********************************************************************end constructor
     void sendMail(String messageFrom,String messageTo,String subject,String messageBody) throws Exception
          properties.put("mail.from",messageFrom);
          InternetAddress[] address={ new InternetAddress(messageTo) };
          message.setFrom(new InternetAddress(messageFrom));
          message.setRecipients(Message.RecipientType.TO,address);
          message.setSubject(subject);
          message.setContent(messageBody,"text/plain");
          Transport transport=session.getTransport(address[0]);
          transport.addConnectionListener(new ConnectionHandler());
          transport.addTransportListener(new TransportHandler());
          transport.connect();
          transport.sendMessage(message,address);
     } //*************************************************************************end function
} //*************************************************************************************end main
class ConnectionHandler extends ConnectionAdapter
     public void opened(ConnectionEvent e)
          System.out.println("connection opened");
     public void disconnected(ConnectionEvent e)
          System.out.println("connection disconnected");
     public void closed(ConnectionEvent e)
          System.out.println("connection closed");
} //*************************************************************************************end main
class TransportHandler extends TransportAdapter
     public void messageDelivered(TransportAdapter e)
          System.out.println("message delivered");
     public void messageNotDelivered(TransportAdapter e)
          System.out.println("message NOT delivered");
     public void messagePartiallyDelivered(TransportAdapter e)
          System.out.println("message partially delivered");
} //*************************************************************************************end main
class ServerAuthenticate extends Authenticator
     String smtpUsername = null;
     String smtpPassword = null;
     public ServerAuthenticate(String username, String password)
          smtpUsername = username;
          smtpPassword = password;
     protected PasswordAuthentication getPasswordAuthentication()
          return new PasswordAuthentication(smtpUsername,smtpPassword);
} //*************************************************************************************end main
I use this code to call the program.
JavaMailUserAgent jmail=new JavaMailUserAgent("smtp.mail.yahoo.com","my_yahoo_username","my_yahoo_password");
jmail.sendMail("[email protected]","[email protected]","test subject","test message");
Could you pls tell me why do I get this error eventhough My program has server authentication.
Is this my program error.Please Helpl me what to do to correct this problem.
Please include a sample code
thanks for listening
sabu

Answer 1

I have used the code below to send mail from yahoo account,but I got the error message like below,what I should configure in pop3 of yahoo account????
import javax.mail.*;
import java.util.*;
import javax.mail.internet.*;
import javax.mail.event.*;
import java.io.*;
public class JavaMailUserAgent
Properties properties;
Session session;
Message message;
JavaMailUserAgent(String mailHost,String smtpUsername,String smtpPassword) throws Exception
properties=new Properties();
properties.put("mail.smtp.host",mailHost);
ServerAuthenticate auth=new ServerAuthenticate(smtpUsername,smtpPassword);
session=Session.getInstance(properties,auth);
message=new MimeMessage(session);
//**********************************************************************end constructor
void sendMail(String messageFrom,String messageTo,String subject,String messageBody) throws Exception
properties.put("mail.from",messageFrom);
InternetAddress[] address={ new InternetAddress(messageTo) };
message.setFrom(new InternetAddress(messageFrom));
message.setRecipients(Message.RecipientType.TO,address);
message.setSubject(subject);
message.setContent(messageBody,"text/plain");
Transport transport=session.getTransport(address[0]);
transport.addConnectionListener(new ConnectionHandler());
transport.addTransportListener(new TransportHandler());
transport.connect();
transport.sendMessage(message,address);
} //*************************************************************************end function
} //*************************************************************************************end main
class ConnectionHandler extends ConnectionAdapter
public void opened(ConnectionEvent e)
System.out.println("connection opened");
public void disconnected(ConnectionEvent e)
System.out.println("connection disconnected");
public void closed(ConnectionEvent e)
System.out.println("connection closed");
} //*************************************************************************************end main
class TransportHandler extends TransportAdapter
public void messageDelivered(TransportAdapter e)
System.out.println("message delivered");
public void messageNotDelivered(TransportAdapter e)
System.out.println("message NOT delivered");
public void messagePartiallyDelivered(TransportAdapter e)
System.out.println("message partially delivered");
} //*************************************************************************************end main
class ServerAuthenticate extends Authenticator
String smtpUsername = null;
String smtpPassword = null;
public ServerAuthenticate(String username, String password)
smtpUsername = username;
smtpPassword = password;
protected PasswordAuthentication getPasswordAuthentication()
return new PasswordAuthentication(smtpUsername,smtpPassword);
public static void main(String str[])throws Exception
JavaMailUserAgent jmail=new
JavaMailUserAgent("smtp.mail.yahoo.com","[email protected]","passwordd");
jmail.sendMail("[email protected]","[email protected]","test subject","test message");
ERROR:
E:\mail\javamail\servlet>java ServerAuthenticate
connection opened
Exception in thread "main" javax.mail.MessagingException: 530 authentication req
uired - for help go to http://help.yahoo.com/help/us/mail/pop/pop-11.html
at com.sun.mail.smtp.SMTPTransport.issueCommand(SMTPTransport.java:879)
at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:599)
at com.sun.mail.smtp.SMTPTransport.sendMessage(Compiled Code)
at JavaMailUserAgent.sendMail(JavaMailUserAgent.java:58)
at ServerAuthenticate.main(JavaMailUserAgent.java:131)
How Could I rectyfy the above error ?????
Regards,
Mahesh.