Date: Wed, 2 Jan 2002 19:39:21 +0100 (CET) From: Oliver Fromme <olli@secnetix.de> To: freebsd-questions@FreeBSD.ORG, smorton@acm.org Subject: Re: Regex Question - email matching Message-ID: <200201021839.g02IdLG68388@lurza.secnetix.de> In-Reply-To: <3C334E58.7050905@verizon.net>
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Simon Morton <simon.morton@verizon.net> wrote:
> if ( $email =~ /^([\w\.\-]+)\@([\w\.\-]+)\.([[:alpha:]]+)$/ ) {
> [...]
> } else {
> print "Invalid email address\n";
Then you would be rejecting a lot of valid addresses.
For example, they can contain "+". On the other hand,
it would accept "_" in domain names which is illegal.
Please -- if someone is accepting or rejecting email
addresses based on some regular expression, _PLEASE_
read RFC 2822 first, and in particular section 3.4
titled "address specification". Otherwise you might
cause some trouble and grief to your users.
The format of valid email addresses is more complicted
than many people think.
Regards
Oliver
--
Oliver Fromme, secnetix GmbH & Co KG, Oettingenstr. 2, 80538 München
Any opinions expressed in this message may be personal to the author
and may not necessarily reflect the opinions of secnetix in any way.
"All that we see or seem is just a dream within a dream" (E. A. Poe)
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