Johannes Janson wrote:
>
> Hi,
>
> this is the regular expression from a PHP book.
>
> ereg("^[_a-zA-Z0-9-]+(\.[_a-zA-Z0-9-]+)*@([a-zA-Z0-9-]+\.)+([a-zA-z]{2,3})$,
> $formfield");
> looks horrible but works.
>
Besides the RE you might wanna take a look at these functions:
http://www.php.net/manual/en/function.getmxrr.php
and
http://www.php.net/manual/en/function.checkdnsrr.php
Using (one of) those you can check the email-address better. I.e.
the domain. Extract the domainname from the given email-address and
feed it to either one of these and you'll get a result whether or
not the domain has an MX-record. Only thing left is whether or not
the user exists on the given mailserver. But for as far as I know
you can't automatically check that.
--
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** Renze Munnik
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