unable to receive email through contact form here is my code - php

Question

I am unable to receive email.here is my code.and i am trying to find my error but i am unable to find.so plzz anybody help me to solve this one.i am doubtful too about my code.here is my code which i have in my php file.my mail()
functions return true and i have modified my xamp config files.
<?php
require("connection.php");
?>
<?php
if(isset($_REQUEST))
{
$first = $_REQUEST['firstname'];
$middle = $_REQUEST['middlename'];
$last = $_REQUEST['lastname'];
$email = $_REQUEST['email'];
$phone = $_REQUEST['phone'];
$message =$_REQUEST['message'];
$query=" INSERT INTO `contact`(`id`,`first-name`, `middle-name`, `last-name`, `email`, `phone`, `message`) VALUES ('','$first','$middle','$last','$email','$phone','$message')";
$result = mysql_query($query);
if($result)
{
echo "data entered";
}
else
{
echo "data is not entered";
}
$to = "mehmood.asif31#gmail.com";
$subject = "Message From Contact Us Page";
$headers = "From:mehmood.asif31#gmail.com \r\n";
$headers .= "Bcc:mehmood.asif31#gmail.com \r\n";
$message = '<div style="margin:0 auto; padding:0px; width:800px">
<p style="font:bold 28px Arial, Helvetica, sans-serifl ; color:#006699; padding:0 0 0px 0; ">Feedback Message</p>
<div style=" margin:0 0 20px 0; font-family:Arial, Helvetica, sans-serif; font-size:15px; padding:10px; margin:0px; line-height:22px;">
<table>
<tr>
<td><strong>Name:</strong></td>
<td>'.$first.'</td>
</tr>
<tr>
<td><strong>Email ID:</strong></td>
<td>'.$email.'</td>
</tr>
<tr>
<td><strong>Phone No:</strong></td>
<td>'.$phone.'</td>
</tr>
<tr>
<td><strong>Message:</strong></td>
<td>'.$message.'</td>
</tr>
</table>
</div>
</div>';
//echo $message; exit;
mail($to, $subject, $message, $headers);
unset($_POST);
}
?>