Help transport .send(message) problem

Question

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("[email protected]");
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
%>

Answer 1

You are specifying authentication to be used, but you aren't supplying any authentication credentials, hence the AuthenticationFailedException.
You need to create an Authenticator class. If you just need simple username/password authentication, just create a class to handle this.
For example:
public class SimpleAuthenticator extends Authenticator {
  private String username;
  private String password;
  private PasswordAuthentication auth;
  public java.lang.String getPassword() {
    return password;
  public PasswordAuthentication getPasswordAuthentication() {
    if(auth == null) {
      auth = new PasswordAuthentication(username, password);
    return auth;
  public java.lang.String getUsername() {
    return username;
  public void setPassword(java.lang.String password) {
    password = password;
  public void setUsername(java.lang.String username) {
    username = username;
}Then, when you create the session:
SimpleAuthenticator auth = new SimpleAuthenticator();
auth.setUsername("yourusername");
auth.setPassword("yourpassword");And instead of
Session s = Session.getInstance(props,null);use
Session s = Session.getInstance(props,auth);