SMTP authorization

Question

Can someone tell me if there is any foolproof way for suthorising SMTP using Java Mail. I tried using the authenticator methods outlined in the Java Mail APIs, but it ois not working with few mwil servers.. The typical error message is:
Error: 530, Delivery not permitted for non-local users, try Authorising.
Any clues? Please help.
Thanks
Sridhar

Answer 1

The solution is showed in the followind servlet code.
I hope this helps.
import java.io.*;
import java.util.Properties;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.mail.*;
import javax.mail.internet.*;
import com.sun.mail.smtp.*;
public class NuevoMail extends HttpServlet {
//please feel these fields with your data
static final String ToAddress = "[email protected]";
static final String host = "smtp.mail.yahoo.com"; //SMTP host
static final String from = "[email protected]";
static final String user = "xxxxxx";
static final String pass = "*******";
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException ,IOException{
res.setContentType("text/html");
try {
//initialize the StringBuffer object within the try/catch loop
StringBuffer sb = new StringBuffer( );
//Get system properties
Properties props = System.getProperties( );
//Setup mail server
props.put("mail.smtp.host", host);
props.put("mail.debug", "true");
props.put("mail.smtp.auth","true");
//Get session
Session session = Session.getDefaultInstance(props, null);
                    session.setDebug(true);
                    session.setPasswordAuthentication(new URLName("smtp",host,25,"INBOX",user,pass), new PasswordAuthentication(user,pass));
//Define message
MimeMessage msg = new MimeMessage(session);
//Set the from address
msg.setFrom(new InternetAddress(from));
//Set the to address
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(ToAddress));
//Set the subject
msg.setSubject("Test mail using JavaMail APIs");
//Set the text content for body
sb.append("This is the 1st String line.\n\n");
sb.append("This is the 2nd String line.\n\n");
sb.append("This is the 3rd String line.\n\n");
msg.setText(sb.toString( ));
//Send message
                              Transport tr = session.getTransport("smtp");
     tr.connect(host, user, pass);
                              msg.saveChanges();     // don't forget this
                    tr.sendMessage(msg, msg.getAllRecipients());
     tr.close();
catch (MessagingException e) {
          System.out.println(e);