User-agent: *
Disallow: /getout.php

SetEnvIf Request_URI "^(/403.*\.htm|/robots\.txt)$" allowsome
<Files *>
order deny,allow
deny from env=getout
allow from env=allowsome
</Files>

<?php
//////* CONFIGURATION START */////

$filename = '/home/username/public_html/.htaccess';// Change username to your hosting account username to suit the path to your .htaccess file
$emailalert = 'alertaddress@yourdomain.com.au';// Change to your email address
$emailfrom = 'as_above';// Change to alternative email address that you want the alert to appear from, or leave as 'as_above'
$qtyemails = 5000;// How many dud emails do you want to generate?

/////* CONFIGURATION END */////
// Do not adjust below here! //

if ($emailfrom == 'as_above') $emailfrom = $emailalert;
$content = "SetEnvIf Remote_Addr ^".str_replace(".","\.",$_SERVER["REMOTE_ADDR"])."$ getout # ".$_SERVER["HTTP_USER_AGENT"]."\r\n";
$handle = fopen($filename, 'r');
$content .= fread($handle,filesize($filename));
fclose($handle);
$handle = fopen($filename, 'w+');
fwrite($handle, $content,strlen($content));
fclose($handle);
mail($emailalert,
"Spider Alert!",
"The following ip just got banned because it accessed the spider trap.\r\n\r\n".$_SERVER["REMOTE_ADDR"]."\r\n".$_SERVER["HTTP_USER_AGENT"]."\r\n".$_SERVER["HTTP_REFERER"]
,"FROM: $emailfrom");

// start free emails for spider
$page = '';
for ( $i = 0; $i < $qtyemails; $i++ )
{
$page .= new_email();
}

$page .= "Goodbye!";
echo $page;

function new_email()
{
$email = '';
$letters_array = array('a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r',
's', 't', 'u', 'v', 'w', 'x', 'y', 'z');
for ( $i = 0; $i < 17; $i++ )
{
$email .= ( $i!== 10 )? $letters_array[ mt_rand( 0, 25) ] : '@';
}
$email .= '.com.au';
$email = '<a href="mailto:' . $email . '">' . $email . "</a>\n";
return $email;

}
?>

<a href="http://www.mydomain.com.au/getout.php"><img src="http://www.mydomain.com.au/images/pixel_trans.gif" border=0></a>