Validating EMailAdresses for syntactical correctness

[Alexander Skwar]

So sprach »Mark McEahern« am 2002-01-24 um 10:26:36 -0800 :
> Level 5:  Make sure the address itself is valid (resolve the mx record and
> test the address via smtp).

This won't work.  A lot of the huge providers (AOL, T-Online...) always
give a true result here, even if the adress does not exist.  This is
also done for anti-spam measures, because if a spammer could so easily
check if a given adress exists, it would help him.

Alexander Skwar
-- 
How to quote:	http://learn.to/quote (german) http://quote.6x.to (english)
Homepage:	http://www.iso-top.de      |     Jabber: askwar at charente.de
   iso-top.de - Die günstige Art an Linux Distributionen zu kommen
                       Uptime: 12 days 3 hours 30 minutes