> Is it posiible to check that an email exists before confirming a form
> under windows NT ?
> Thanks
There are several email verification scripts floating around in PHP
archives.
Most just make sure the email "looks" good for the usual formats.
None, I think, impelement the full 3-page Regular Expression it would take
to correctly validate an email *just* to see if it conforms to the rules for
a valid email.
A few may actually contact the "server" portion of the email address and ask
that server if it's a valid email. However, some such servers lie, and say
"Yes" rather than check.
There is no way to be 100% sure the email works. You have to decide how
important it is to check how carefully.
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