[mail() not working properly]

yes, $reason is the recipients email, it would make more sense if I posted the form, but besides that, is there anything wrong?

[mail() not working properly]

so, I'm working on a contact form and I finished my code and everything andd it looks fine but it gives me an error on the line with the actual mail() function
[code]<?php
$name=$_POST['name'];
$email=$_POST['senderemail'];
$subject=$_POST['subject'];
$reason=$_POST['reason'];
$message=$_POST['message'];
$message=wordwrap($message, 70);
$ip = getenv('REMOTE_ADDR');

if ($reason == 'nothingselected') {
    echo "You must select a reason for contact to procede. <a href=\"contact.html\">Go Back.</a>";
}
else {
    mail($reason, $subject, 'Sender: '$name'('$email')\n Sender\'s IP: '$ip'\n\nMessage: '$message, 'From: '$name 'Reply-To: '$email);
    echo "Thank you for your message.";
}
?>[/code]
can someone tell me whats wrong with it?