MODx cannot send emails!?

<?php
                 $error    = ''; // error message
                 $name     = ''; // sender's name
                 $email    = ''; // sender's email address
                 $subject  = ''; // subject
                 $message  = ''; // the message itself
               	 $spamcheck = ''; // Spam check

            if(isset($_POST['send']))
            {
                 $name     = $_POST['name'];
                 $email    = $_POST['email'];
                 $subject  = $_POST['subject'];
                 $message  = $_POST['message'];
               	 $spamcheck = $_POST['spamcheck'];

                if(trim($name) == '')
                {
                    $error = '<div class="errormsg">Please enter your name!</div>';
                }
            	    else if(trim($email) == '')
                {
                    $error = '<div class="errormsg">Please enter your email address!</div>';
                }
                else if(!isEmail($email))
                {
                    $error = '<div class="errormsg">You have enter an invalid e-mail address. Please, try again!</div>';
                }
            	    if(trim($subject) == '')
                {
                    $error = '<div class="errormsg">Please enter a subject!</div>';
                }
            	else if(trim($message) == '')
                {
                    $error = '<div class="errormsg">Please enter your message!</div>';
                }
	          	else if(trim($spamcheck) == '')
	            {
	            	$error = '<div class="errormsg">Please enter the number for Spam Check!</div>';
	            }
	          	else if(trim($spamcheck) != '5')
	            {
	            	$error = '<div class="errormsg">Spam Check: The number you entered is not correct! 2 + 3 = ???</div>';
	            }
                if($error == '')
                {
                    if(get_magic_quotes_gpc())
                    {
                        $message = stripslashes($message);
                    }

                    // the email will be sent here
                    // make sure to change this to be your e-mail
                    $to      = "[email protected]";

                    // the email subject
                    // '[Message From Kenya-Portals.Com] :' will appear automatically in the subject.
                    // You can change it as you want

                    $subject = '[Message From Kenya-Portals.Com] : ' . $subject;

                    // the mail message ( add any additional information if you want )
                    $msg     = "From : $name \r\ne-Mail : $email \r\nSubject : $subject \r\n\n" . "Message : \r\n$message";

                    mail($to, $subject, $msg, "From: $email\r\nReply-To: $email\r\nReturn-Path: $email\r\n");
            ?>

'formid' passed using rule: #VALUE feedbackForm, (input=feedbackForm)
'                   Subject' passed using rule: #LIST 1,2,3, (input=1)
SESSION HASH:
FORM HASH:
Mail Headers:
From: [email protected] (KenWeb Websites)
Reply-to:[email protected]
To: "[email protected]"
Subject: KenWeb feedback
CC:
BCC: