cannot get mail() to function on IIS5 / Win2000

When I attempt to execute the following code <?php echo "Sending Email..."; $emailaddress = "phobo@paradise.net.nz"; $subject = "php emailing demo"; $message = "Welcome to the demo\nLine Two\n\nLine Four etc\n"; $headers = "From: automatedform@hehe.com\n"; mail($emailaddress,$subject,$message,$headers); echo "...done"; ?> I get no response from IE5. After about two minutes i see "Sending Email..." and then IE5 gives up. I assume that mail() is caught up doing something and timesout and finally sends the echo to the client. I have tried playing with php.ini as follows, but neither works SMTP = localhost sendmail_from = me@localhost.com and .. SMTP = smtp.paradise.net.nz sendmail_from = phobo@paradise.net.nz Do I need to set up a SMTP server or something else with PHP ? are there IIS5 setting which I need to alter? I have a firewall I use but out of desperation I disabled it to see if that was the problem, and it wasn't... Any replies would be appreciated incredibly! The php file is up at http://phobo.dyndns.org/phptestbed/email/email.php for testing. Thanks,SIGGY (phobo@paradise.net.nz)