E-Mail validation – Checking for 'free' e-mail address

Hello all Over at http://www.DNSstuff.com, they have a great tool to check whether an e-mail address is from a free (web-based) e-mail provider. I need to be able to perform this check from PHP code. However, the Terms and Conditions of http://www.DNSstuff.com prohibit me from writing a scraping script to access their database of free e-mail domains over the WWW interface. Would anyone know where to get a list of free e-mail domains (like hotmail.com, mail.com etc)? Or how one could (automatically) generate one’s own? Or has someone already written a function to perform this check? TIA Paul _______________________________________________________________________ Do You Yahoo!? Get your free @yahoo.com.hk address at http://mail.english.yahoo.com.hk