receiving dodgy emails

[amatuer]

Hi all,

I'm using the feedback code below in which i get a whole heap of emails which dont make sense, sometimes their blank, mostly others have text in it. Somedays I might recieve a couple of hundred a day. Below if the php code.

<?

$SendTo = "emailaddress";
$ThanksURL = "thankyou.htm"; //confirmation page
$SubjectLine = "Oil Change Express Website Feedback";
$name = $_POST['name'] ;
$email = $_POST['email'] ;
$telephone = $_POST['telephone'] ;
$enquiry = $_POST['enquiry'] ;
$http_referrer = getenv( "HTTP_REFERER" );
$Divider = "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~";

// Build Message Body from Web Form Input
$MsgBody = @gethostbyaddr($_SERVER["REMOTE_ADDR"]) . "\n$Divider\n";

$MsgBody =
"This message was sent from:\n" .
"$http_referrer\n" .
"--------------------------------------------------\n\n" .
"Name: $name\n" .
"Email: $email\n" .
"Telephone Number: $telephone\n" .
"------------------------- ENQUIRY -------------------------\n\n" .
$enquiry .
"\n\n------------------------------------------------------------\n" ;

mail($SendTo, $SubjectLine, $MsgBody, "From: \"$name\"emailaddress\r\nReply-To: \"$name\" <$email>\r\nX-Mailer: chfeedback.php 2.04" );
header("Location: $ThanksURL");

?>

-------------------------------------------------------------------------------------

These are some of the emails I receive.