hi, I'm new to JavaMail, I have a problem on my 1st JavaMail jsp, anyone can help me pls? below is the jsp:

<%@ page contentType="text/html" import="javax.mail.*, java.util.*, javax.mail.internet.*"%>









<%

Properties props = new Properties();

props.put("mail.smtp.host", "smtp.polyu.edu.hk");

Session s = Session.getDefaultInstance(props);

MimeMessage message = new MimeMessage(s);

InternetAddress from = new InternetAddress
("01560455t@polyu.edu.hk");

message.setFrom(from);

InternetAddress to = new InternetAddress("monkeynonno@hotmail.com");

message.addRecipient(Message.RecipientType.TO, to);

message.setSubject("Test fromJavaMail.");

message.setText("Hello from JavaMail!");

Transport.send(message);

%>

Mail has been sent to monkeynonno@hotmail.com

here's the error:

org.apache.jasper.JasperException: Sending failed;

nested exception is:
class javax.mail.SendFailedException: Invalid Addresses;

nested exception is:
class javax.mail.SendFailedException: 550 ... we do not relay