Exec-php and mail

Hello, I have installed the plugin Exec-php to be able to compile php scripts on my pages.

It works fine, for example:

<?php echo “qwerty”; ?>

it shows querty (of course)…

What I’m trying to do is sending a form for contacts. The page with the form is called “contact” and the form goes to a page called “sent” <form method=”post” action=”../sent/”>

I can pass the variable with post, for example:

<?php $formname = $_POST[‘formname’];
echo $formname; ?>

it shows the name that someone inserts in the form.

When I go to mail it, it doesn’t work. So I try a very general script, like this:

<?php

$to = ‘info@xxx.com’;
$subject = ‘the subject’;
$message = ‘hello’;
$headers = ‘From: webmaster@example.com’ . “\r\n” .
‘Reply-To: webmaster@example.com’ . “\r\n” .
‘X-Mailer: PHP/’ . phpversion();

mail($to, $subject, $message, $headers);

?>

(of course I have my domain instead of xxx)

I get nothing, no mail…

Can anyone help me?