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https://issues.apache.org/jira/browse/WW-4395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16103662#comment-16103662
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Stefaan Dutry commented on WW-4395:
-----------------------------------
Oh ok, i forgot about the client-side validation.
> Make email validator regex comply with RFC 6531
> ------------------------------------------------
>
> Key: WW-4395
> URL: https://issues.apache.org/jira/browse/WW-4395
> Project: Struts 2
> Issue Type: Improvement
> Components: Core Actions
> Affects Versions: 2.3.16.3
> Reporter: Miguel Almeida
> Labels: email, regex, validation
> Fix For: 2.5.x
>
>
> This is the regex for email validation in Struts:
> {noformat}
> \\b^['_a-z0-9-\\+]+(\\.['_a-z0-9-\\+]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)\*
> \.([a-z]{2}|aero|arpa|asia|biz|com|coop|edu|gov|info|int|jobs|mil|mobi|
> museum|name|nato|net|org|pro|tel|travel|xxx)$\\b
> {noformat}
> This doesn't allow special characters (e.g. àéí, äëö,...).
> However, International characters above U+007F are permitted by [RFC
> 6531|http://tools.ietf.org/html/rfc6531]
> Because some mail servers seem to follow this standard, regex should be
> improved to allow email addresses valid according to this standard.
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