No funciona mi apartado contacto en mi pagina

[pretenders]

Hola buen dia a todos, me presento: Alejandro Castillo , Ocupacion: Soporte tecnico
Laborando en: Mi propio negocio.

Que tal amigos soy algo novato en PHP y en desarrollo web pero me gusta aprender y tome una plantilla pre diseñada y empese a modificarla a mi gusto para ir aprendiendo de todo lo que es desarrollo web el detalle es que pienso usar dicha pagina para mi negocio ya la subi al hosting ya compre mi dominio pero al usar el apartado "contacto" no me llegan los mensajes me marca error :( este es el codigo:

__________________________________________________ _________________
<?php
// OPTIONS - PLEASE CONFIGURE THESE BEFORE USE!

$yourEmail = "YOUR EMAIL"; // the email address you wish to receive these mails through
$yourWebsite = "WEBSITE NAME"; // the name of your website
$thanksPage = ''; // URL to 'thanks for sending mail' page; leave empty to keep message on the same page
$maxPoints = 4; // max points a person can hit before it refuses to submit - recommend 4
$requiredFields = "name,email,comments"; // names of the fields you'd like to be required as a minimum, separate each field with a comma


// DO NOT EDIT BELOW HERE
$error_msg = null;
$result = null;

$requiredFields = explode(",", $requiredFields);

function clean($data) {
$data = trim(stripslashes(strip_tags($data)));
return $data;
}
function isBot() {
$bots = array("Indy", "Blaiz", "Java", "libwww-perl", "Python", "OutfoxBot", "User-Agent", "PycURL", "AlphaServer", "T8Abot", "Syntryx", "WinHttp", "WebBandit", "nicebot", "Teoma", "alexa", "froogle", "inktomi", "looksmart", "URL_Spider_SQL", "Firefly", "NationalDirectory", "Ask Jeeves", "TECNOSEEK", "InfoSeek", "WebFindBot", "girafabot", "crawler", "www.galaxy.com", "Googlebot", "Scooter", "Slurp", "appie", "FAST", "WebBug", "Spade", "ZyBorg", "rabaz");

foreach ($bots as $bot)
if (stripos($_SERVER['HTTP_USER_AGENT'], $bot) !== false)
return true;

if (empty($_SERVER['HTTP_USER_AGENT']) || $_SERVER['HTTP_USER_AGENT'] == " ")
return true;

return false;
}

if ($_SERVER['REQUEST_METHOD'] == "POST") {
if (isBot() !== false)
$error_msg .= "No bots please! UA reported as: ".$_SERVER['HTTP_USER_AGENT'];

// lets check a few things - not enough to trigger an error on their own, but worth assigning a spam score..
// score quickly adds up therefore allowing genuine users with 'accidental' score through but cutting out real spam :)
$points = (int)0;

$badwords = array("adult", "beastial", "bestial", "blowjob", "clit", "cum", "cunilingus", "cunillingus", "cunnilingus", "cunt", "ejaculate", "fag", "felatio", "fellatio", "fuck", "fuk", "fuks", "gangbang", "gangbanged", "gangbangs", "hotsex", "hardcode", "jism", "jiz", "orgasim", "orgasims", "orgasm", "orgasms", "phonesex", "phuk", "phuq", "pussies", "pussy", "spunk", "xxx", "viagra", "phentermine", "tramadol", "adipex", "advai", "alprazolam", "ambien", "ambian", "amoxicillin", "antivert", "blackjack", "backgammon", "texas", "holdem", "poker", "carisoprodol", "ciara", "ciprofloxacin", "debt", "dating", "porn", "link=", "voyeur", "content-type", "bcc:", "cc:", "document.cookie", "onclick", "onload", "javascript");

foreach ($badwords as $word)
if (
strpos(strtolower($_POST['comments']), $word) !== false ||
strpos(strtolower($_POST['name']), $word) !== false
)
$points += 2;

if (strpos($_POST['comments'], "http://") !== false || strpos($_POST['comments'], "www.") !== false)
$points += 2;
if (isset($_POST['nojs']))
$points += 1;
if (preg_match("/(<.*>)/i", $_POST['comments']))
$points += 2;
if (strlen($_POST['name']) < 3)
$points += 1;
if (strlen($_POST['comments']) < 15 || strlen($_POST['comments'] > 1500))
$points += 2;
// end score assignments

foreach($requiredFields as $field) {
trim($_POST[$field]);

if (!isset($_POST[$field]) || empty($_POST[$field]))
$error_msg .= "Please fill in all the required fields and submit again.\r\n";
}

if (!preg_match("/^[a-zA-Z-'\s]*$/", stripslashes($_POST['name'])))
$error_msg .= "The name field must not contain special characters.\r\n";
if (!preg_match('/^([a-z0-9])(([-a-z0-9._])*([a-z0-9]))*\@([a-z0-9])(([a-z0-9-])*([a-z0-9]))+' . '(\.([a-z0-9])([-a-z0-9_-])?([a-z0-9])+)+$/i', strtolower($_POST['email'])))
$error_msg .= "That is not a valid e-mail address.\r\n";
if (!empty($_POST['url']) && !preg_match('/^(http|https):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i', $_POST['url']))
$error_msg .= "Invalid website url.\r\n";

if ($error_msg == NULL && $points <= $maxPoints) {
$subject = "Automatic Form Email";

$message = "You received this e-mail message through your website: \n\n";
foreach ($_POST as $key => $val) {
$message .= ucwords($key) . ": " . clean($val) . "\r\n";
}
$message .= "\r\n";
$message .= 'IP: '.$_SERVER['REMOTE_ADDR']."\r\n";
$message .= 'Browser: '.$_SERVER['HTTP_USER_AGENT']."\r\n";
$message .= 'Points: '.$points;

if (strstr($_SERVER['SERVER_SOFTWARE'], "Win")) {
$headers = "From: $YourMail\n";
$headers .= "Reply-To: {$_POST['email']}";
} else {
$headers = "From: $Yourweb site <$Yourmail>\n";
$headers .= "Reply-To: {$_POST['email']}";
}

if (mail($yourEmail,$subject,$message,$headers)) {
if (!empty($thanksPage)) {
header("Location: $");
exit;
} else {
$result = 'Your mail was successfully sent.';
$disable = true;
}
} else {
$error_msg = 'Your mail could not be sent this time. ['.$points.']';
}
} else {
if (empty($error_msg))
$error_msg = 'Your mail looks too much like spam, and could not be sent this time. ['.$points.']';
}
}
function get_data($var) {
if (isset($_POST[$var]))
echo htmlspecialchars($_POST[$var]);
}
?>
__________________________________________________ _______________

Pero al momento de enviar el correo siempre me manda este error:
"ERROR: Your mail could not be sent this time. [0]"

Contando que sustituyo los campos donde me indican con mi correo y mi pagina