com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay

[carina caoor]

I am trying out an example from sun's site for sending mail to my gmail id but it gives me error:

   

import java.util.Properties;
import javax.mail.*;
import javax.mail.internet.*;

public class MailExample {
  public static void main (String args[]) throws Exception {
    String host = args[0];
    String from = args[1];
    String to = args[2];

    // Get system properties
    Properties props = System.getProperties();

    // Setup mail server
    props.put("mail.smtp.host", host);

    // Get session
    Session session = Session.getDefaultInstance(props, null);

    // Define message
    MimeMessage message = new MimeMessage(session);

    // Set the from address
    message.setFrom(new InternetAddress(from));

    // Set the to address
    message.addRecipient(Message.RecipientType.TO, 
      new InternetAddress(to));

    // Set the subject
    message.setSubject("Hello JavaMail");

    // Set the content
    message.setText("Welcome to JavaMail");

    // Send message
    Transport.send(message);
  }
}


 

and compiled it

C:\javamail-1.4.2\javamail-1.4.2\demo>java MailExample 10.244.100.220 rtabassum@
moalajah.ae [e-mail]
Exception in thread "main" javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay
for [e-mail]

at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1446)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:736)
at javax.mail.Transport.send0(Transport.java:191)
at javax.mail.Transport.send(Transport.java:120)
at MailExample.main(MailExample.java:37)
Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to rel
ay for [e-mail]

at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1297)
... 4 more




My outlook is configured to send mails to gmail id but why from here i am unable to send mail to gmail id. Please suggest me .

[Rob Spoor]

Can you send emails using the same mail server and To and From addresses from a different application like Outlook, Outlook Express or Mozilla Thunderbird? I highly doubt it, and that would mean the SMTP server is not set up properly.