...I`m not allowed to use it on my server...

Please see Mail::RFC822::Address: regexp-based address validation as well as Mastering Regular Expressions. The latter comes with the canonical example...

Best regards, Karl

«The Crux of the Biscuit is the Apostrophe»

In reply to Re^3: input - E-mail address - how to check string ? by karlgoethebier
in thread input - E-mail address - how to check string ? by zalezny

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