Problemas con mail()

[ZonaRLX]

Código PHP:

<?php
//cambie las opciones aqui, coloque la cuenta de correo que dese establecer para enviar su correo
 
$your_email = "[email protected]";
$your_smtp = "midominio.com";
$your_smtp_user = "[email protected]";
$your_smtp_pass = "1234567890";
$your_website = "http://midominio.com";
 
 
require("phpmailer/class.phpmailer.php");
 
 
//function to check properly formed email address
function isEmailValid($email)
{
  // checks proper syntax
  if( !preg_match( "/^([a-zA-Z0-9])+([a-zA-Z0-9\._-])*@([a-zA-Z0-9_-])+([a-zA-Z0-9\._-]+)+$/", $email))
  {
    return false;
  } 
  
  return true;
  
}
 
 
//get contact form details
$name = $_POST['name'];
$email = $_POST['email'];
$url = $_POST['url'];
$comments = $_POST['comments'];
 
 
//validate email address, if it is invalid, then returns error
 
if (!isEmailValid($email)) {
    die('Invalid email address');
}
 
//start phpmailer code 
 
$ip = $_SERVER["REMOTE_ADDR"];
$user_agent = $_SERVER['HTTP_USER_AGENT'];
 
 
 
$response="Date: " . date("d F, Y h:i:s A",time()+ 16 * 3600 - 600) ."\n" . "IP Address: $ip\nURL: $url\nUser-agent:$user_agent\nName: $name\nContents:\n$comments\n";
//mail("[email protected]","Contact form fakapster",$response, $headers);
 
$mail = new PHPmailer();
$mail->SetLanguage("en", "phpmailer/language");
$mail->From = $your_email;
$mail->FromName = $your_website;
$mail->Host = $your_smtp;
$mail->Mailer   = "smtp";
$mail->Password = $your_smtp_pass;
$mail->Username = $your_smtp_user;
$mail->Subject = "$your_website feedback";
$mail->SMTPAuth  =  "true";
 
$mail->Body = $response;
$mail->AddAddress($your_email,"$your_website admin");
$mail->AddReplyTo($email,$name);
 
 
if (!$mail->Send()) {
echo "<p>There was an error in sending mail, please try again at a later time</p>";
echo "<p>".$mail->ErrorInfo."</p>";
} else {
    echo "<p>Thanks for your feedback, <em>$name</em>! We will contact you soon!</p>";
}
 
$mail->ClearAddresses();
$mail->ClearAttachments();
 
?>
 

este es el codigo que estoy usando. Espero me puedas apoyar con el...
ya intente de varios modos y no logro lo que necesito. :( me tiene con canas verdes este tema.