On Mon, 25 Feb 2002, Martin Towell wrote:
> You can use sockets and connect to their mail server (bit after the @) and
> "pretend" to send an email to them, but cancel the request before you
> actually send anything - doesn't always work though, as some servers will
> report back the all users are correct

Anyway, you'd have problems, because for @something sometimes something 
has a MX pointing to something else. Also, with regex it'd be a bit 
difficult (I just remember when I propossed to use e-mail checks in IMP, 
the guys came with a two page long regex just to cover one part of the RFC 
:( ). Anyway for general pourpose it'be useful the class by Manuel Lemos 
(look for it in php classes).


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