Java EE (Java Enterprise Edition) General Discussion

I am getting an error at transport.send(message)

javax.mail.SendFailedException: Sending failed; nested exception is: class javax.mail.AuthenticationFailedException After eleminating all lines the error is at transport.send(msg)
Please help - tell me what I have been doing wrong
My code - is java mail using a jsp
try{
//Properties props = System.getProperties();
Properties props = new Properties();
Store store;
props.put("mail.smtp.host", "smtp.snet.yahoo.com");

props.put("mail.smtp.auth", "true");
Session s = Session.getInstance(props,null);
MimeMessage message = new MimeMessage(s);
InternetAddress from = new InternetAddress("kishore22@yahoo.com");
message.setFrom(from);
String toAddresses = request.getParameter("to");
message.addRecipients(Message.RecipientType.TO, toAddresses);
String ccAddresses = request.getParameter("cc");
message.setRecipients(Message.RecipientType.CC, ccAddresses);
String bccAddresses = request.getParameter("bcc");
message.setRecipients(Message.RecipientType.BCC, bccAddresses);
String subject = request.getParameter("subject");
message.setSubject(subject);
message.setSentDate(new Date());
String text = request.getParameter("text");
message.setText(text);

Transport.send(message); //error is here

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