email isvalid

[l3whmg]

Hi friends,
I search a xbase script to validate email address.
Not to test if it's alive or can receive mail: only check if it is correct.
I've write my personal solution reading about RFC, but it's just my personal pov!
I've tried with hb_regex (using RFC2822 string) but with some problem during compilation.
I've read http://www.regular-expressions.info/email.html but some address seem not valid

Can someone tell me an alternative?

Best Regards