PHP Mail Form Questions - Code Inside

Hiya guys,

I’ve made my first contact form in PHP and called it mail.php, but have two questions about it. First of all, can spam harvesters still find my email address to spam, even though there’s not direct link to my php page except for:
<form action=“mail.php” method=“post”>

Also, on the below script (which is my mail.php page) is there a way to set up an autorepsonder in it?

Thanks!
Matt

<?
$mailto = '[email protected] ;
$subject = “$subject” ;
$formurl = “http://www.mydomain.com/contact.htm” ;
$errorurl = “http://www.mydomain.com/error.htm” ;
$thankyouurl = “http://www.rupertandthefrogsong.co.uk/contact/thankyou.htm” ;

// -------------------- END OF CONFIGURABLE SECTION ---------------

$name =

%4$s

POST[‘name’] ;
$email =

%4$s

POST[‘email’] ;
$subject =

%4$s

POST[‘subject’] ;
$country =

%4$s

POST[‘country’] ;
$comments =

%4$s

POST[‘comments’] ;
$http_referrer = getenv( “HTTP_REFERER” );

if (!isset(

%4$s

POST[‘email’])) {
header( “Location: $formurl” );
exit ;
}
if (empty($name) || empty($email) || empty($subject) || empty($country) || empty($comments)) {
header( “Location: $errorurl” );
exit ;
}
$name = strtok( $name, "
" );
$email = strtok( $email, "
" );
if (get_magic_quotes_gpc()) {
$comments = stripslashes( $comments );
}

$messageproper =

"Country: $country
" .
"
" .
$comments .
"
" ;

mail($mailto, $subject, $messageproper, “From: “$name” <$email>
Reply-To: “$name” <$email>
X-Mailer: chfeedback.php 2.04” );
header( “Location: $thankyouurl” );
exit ;

?>