Comment puis-je envoyer mon PHP des données de formulaire d'e-mail SMTP

j'ai un formulaire sur mon site web afin que les clients peuvent réserver une Chaudière de service. Jusqu'à récemment, il était au travail, mais mon hébergeur a changé il y a les filtres anti-spam. Le script a été l'envoi du formulaire de données à partir du serveur, mais j'ai maintenant besoin de l'envoyer à partir du serveur smtp. J'ai été déconner avec cette pendant des jours, toute aide serait appréciée.

C'est mon code du Formulaire.

 <form name="freecontactform" method="post" action="freecontactformprocess.php" onsubmit = "return validate.check(this)">
<table width="400px" class="freecontactform">
<tr>
<td colspan="2">
<div class="freecontactformheader">Boiler Service Form</div>
<div class="freecontactformmessage">Fields marked with <span class="required_star"> * </span> are mandatory.</div>
</td>
</tr>
<tr>
<td valign="top">
<label for="Full_Name" class="required">Full Name<span class="required_star"> * </span></label>
</td>
<td valign="top">
<input type="text" name="Full_Name" id="Full_Name" maxlength="80" style="width:230px">
</td>
</tr>
<tr>
<td valign="top">
<label for="Address" class="required">Address<span class="required_star"> * </span></label>
</td>
<td valign="top">
<input type="text" name="Address" id="Address" maxlength="100" style="width:230px">
</td>
</tr>
<tr>
<td valign="top">
<label for="postcode" class="not-required">Post Code</label>
</td>
<td valign="top">
<input type="text" name="postcode" id="postcode" maxlength="100" style="width:230px">
</td>
</tr>
<tr>
<td valign="top">
<label for="email" class="not-required">Email Address</label>
</td>
<td valign="top">
<input type="text" name="email" id="email" maxlength="100" style="width:230px">
</td>
<tr>
<td valign="top">
<label for="Telephone_Number" class="not-required">Telephone Number</label>
</td>
<td valign="top">
<input type="text" name="Telephone_Number" id="Telephone_Number" maxlength="100" style="width:230px">
</td>
<tr>
<td valign="top">
<label for="Payment" class="not-required">Payment</label>
</td>
<td valign="top"><p>
<input type="radio" name="payment" value="redirect.html"/> 
Pay Online Via PayPal<br />
<input type="radio" name="payment" value="thankyou.html"/> 
Card/Cash/Cheque on Day<br />
</p></td>
</tr>
<tr>
<td colspan="2" style="text-align:center" >
<div class="antispammessage">
To help prevent automated spam, please answer this question
<br /><br />
<div class="antispamquestion">
<span class="required_star"> * </span>
Using only numbers, what is 10 plus 15? &nbsp; 
<input type="text" name="AntiSpam" id="AntiSpam" maxlength="100" style="width:30px">
</div>
</div>
</td>
</tr>
<tr>
<td colspan="2" style="text-align:center" >
<br /><br />
<input type="submit" value=" Submit Form "  style="width:200px;height:40px">
<br /><br />
<br /><br />
</td>
</tr>
</table>
</form>

C'est mon PHP

<?php
if(isset($_POST['email'])) {
include 'freecontactformsettings.php';
function died($error) {
echo "Sorry, but there were error(s) found with the form you submitted. ";
echo "These errors appear below.<br /><br />";
echo $error."<br /><br />";
echo "Please go back and fix these errors.<br /><br />";
die();
}
if(!isset($_POST['Full_Name']) ||
!isset($_POST['Address']) ||
!isset($_POST['postcode']) ||
!isset($_POST['email']) ||
!isset($_POST['Telephone_Number']) ||
!isset($_POST['payment']) || 
!isset($_POST['AntiSpam'])      
) {
died('Sorry, there appears to be a problem with your form submission.');        
}
$full_name = $_POST['Full_Name']; //required
$address = $_POST['Address']; //required
$postcode = $_POST['postcode']; //not required
$email = $_POST['email']; //not required
$telephone = $_POST['Telephone_Number']; //not required
$payment = $_POST['payment']; //required
$antispam = $_POST['AntiSpam']; //required
$error_message = "";
$email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
if(preg_match($email_exp,$email)==0) {
$error_message .= 'The Email Address you entered does not appear to be valid.<br />';
}
if(strlen($full_name) < 2) {
$error_message .= 'Your Name does not appear to be valid.<br />';
}
if($antispam <> $antispam_answer) {
$error_message .= 'The Anti-Spam answer you entered is not correct.<br />';
}
if(strlen($error_message) > 0) {
died($error_message);
}
$email_message = "Form details below.\r\n";
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:");
return str_replace($bad,"",$string);
}
$email_message .= "".clean_string($full_name)."\r\n";
$email_message .= "".clean_string($address)."\r\n";
$email_message .= "".clean_string($postcode)."\r\n";
$email_message .= "".clean_string($email_from)."\r\n";
$email_message .= "".clean_string($telephone)."\r\n";
$email_message .= "".clean_string($payment)."\r\n";
$headers = "From: [email protected]";
$headers = 'Reply-To: '.$email."\r\n" .
'X-Mailer: PHP/' . phpversion();
mail($headers, $email_to, $email_subject, $email_message);
?>
<?php
$payment = $_POST['payment'];
if (!empty($payment))
header( 'Location: '.$payment ) ;
}
die();
?>

J'ai besoin de l'envoyer à partir de l'email que j'ai avec mon hébergeur, c'est un serveur SMTP.

Je vous remercie à l'avance