Problem sending mail via Exchange

[Karsten Brondum]

I'm new to javax.mail. Trying to send mail via Exchange server

mport java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.Message.RecipientType;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
 
public class SendMail {


 
	private String from;
	private String to;
	private String subject;
	private String text;
 
	public SendMail(String from, String to, String subject, String text){
		this.from = from;
		this.to = to;
		this.subject = subject;
		this.text = text;
	}
  
	public void send(){
 
		Properties props = System.getProperties();

		boolean debug = Boolean.valueOf(true).booleanValue();   
		
		props.setProperty("mail.transport.protocol", "smtp");
		props.setProperty("mail.smtp.host", "xxx.yyy.zz.dk");
		props.setProperty("mail.smtp.port", "25");
 
		Session mailSession = Session.getDefaultInstance(props);
		
		mailSession.setDebug(debug);
		
		Message simpleMessage = new MimeMessage(mailSession);
 
		InternetAddress fromAddress = null;
		InternetAddress toAddress = null;
		try {
			fromAddress = new InternetAddress(from);
			toAddress = new InternetAddress(to);
		} catch (AddressException e) {
			System.out.println("Address error:");
			e.printStackTrace();
		}
 
		try {
			simpleMessage.setFrom(fromAddress);
			simpleMessage.setRecipient(RecipientType.TO, toAddress);
			simpleMessage.setSubject(subject);
			simpleMessage.setText(text);
 
			System.out.println("Now send it");
			Transport.send(simpleMessage);
		} catch (MessagingException e) {
			e.printStackTrace();
		}
	}
}

I can telnet the mail server on port 25 from the server where i'm running the code, however the output (removed hostname) is:

C:\Projekter\Sam02\Sam02>java -Dmailx.debug=true -cp "./classes;./jar/mail.jar"
dk.deltat.test.SendMailTest
DEBUG: setDebug: JavaMail version 1.4.5
Now send it
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.s
mtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth false
DEBUG SMTP: trying to connect to host " (host)", port 25, isSSL false

DEBUG SMTP: EOF: [EOF]
DEBUG SMTP: could not connect to host " (host)", port: 25, response:
-1

javax.mail.MessagingException: Could not connect to SMTP host: (host).d
k, port: 25, response: -1
        at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1960)
        at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:64
2)
        at javax.mail.Service.connect(Service.java:295)
        at javax.mail.Service.connect(Service.java:176)
        at javax.mail.Service.connect(Service.java:125)
        at javax.mail.Transport.send0(Transport.java:194)
        at javax.mail.Transport.send(Transport.java:124)
        at dk.deltat.test.SendMail.send(SendMail.java:77)
        at dk.deltat.test.SendMailTest.main(SendMailTest.java:13)

C:\Projekter\Sam02\Sam02>

Any suggestions as to what i'm missing is greatly appreciated

Karsten.