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From "Christopher Schultz (JIRA)" <j...@apache.org>
Subject [jira] [Created] (VALIDATOR-315) Email validator does not properly validate symbolic domain names
Date Tue, 05 Feb 2013 19:32:11 GMT
Christopher Schultz created VALIDATOR-315:
---------------------------------------------

             Summary: Email validator does not properly validate symbolic domain names
                 Key: VALIDATOR-315
                 URL: https://issues.apache.org/jira/browse/VALIDATOR-315
             Project: Commons Validator
          Issue Type: Bug
    Affects Versions: 1.4.0 Release
            Reporter: Christopher Schultz
            Priority: Critical


This returns true:

EmailValidator.getInstance().isValid("me@at&t.net")

...when IMO it should not. If the portion of the address after the @ is symbolic, then it
should be validated like a host name which may only contain [A-Za-z0-9-\.] and has a few other
requirements as well (no leading or trailing hyphen or empty 'label', max 63 characters per
label, max 255 characters total length).

I'm less interested in the limits, etc. but an '&' is not valid in a hostname and it would
be nice to fail under those conditions. Use of IDN should pretty much allow any letter or
number (\p{Alnum}).

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