Receiving spams from your website email forms try CAPTCHA!!!!

This script generates images (known as "Captcha's") which contain security codes used for protecting a form from spam bots. By encoding a 'password' inside an image and asking the user to re-enter what they see you can verify the user is a human and not automated software submitting your form. See how it works:

http://www.white-hat-web-design.co.uk/articles/php-captcha.php