PHP email validator using SMTP
<?php
$validator = new SMTP_Email_Validator('me@example.com');
if (!$validator->validate('test-client@gmail.com')) {
echo 'Invalid email';
}
?>
http://www.webdigi.co.uk/blog/2009/how-to-check-if-an-email-address-exists-without-sending-an-email/
Sebastien Lavoie sebastien@lavoie.sl