PHP mail() doesn't send email

[cmendes0101]

Is there some setting that is not allowing email to be send with in PHP by a default installation of ISPCP?

Here is what is being ran:
$emailTo = "test@test.com"
$subject = 'General Inquiry';
$body = "Name: $name \n\nEmail: $email \n\nSubject: $subject \n\nPhone: $phone \n\nComments:\n $comments";
$headers = 'From: Website User <'.$emailTo.'>' . "\r\n" . 'Reply-To: ' . $email;

mail($emailTo, $subject, $body, $headers);

It runs with no errors but never gets received.