Scott González wrote on 6/27/2008 6:51 AM:
No problem. The interesting thing is that the more you comply with the RFC, the more likely you are to allow someone to accidentally enter an incorrect email address.
Jan Goyvaerts does a great job of explaining the issues surrounding validating email addresses: <http://www.regular-expressions.info/email.html> But for the truly pedantic, here's the regex to validate RFC 822 email addresses: <http://www.ex-parrot.com/~pdw/Mail-RFC822-Address.html> Just note that whatever method you choose, the top-level domains are being opened up. So instead of .com, .org, .net, etc..., there could be some 70 million of them, such as .jquery. The other interesting change is UTF-8 domains; for example, it could "allow Chinese organizations to register domain names written using Chinese ideograms, ending with the two Chinese symbols meaning 'China.'" <http://www.networkworld.com/news/2008/062608-board-opens-way-for-new.html> - Bil