RFC 6530 makes it possible to have internationalized email addresses such as
Currently, Validator.isEmailAddress(emailAddress) and DefaultEmailAddressValidator will both say that internationalized email addresses are invalid.
Workaround: A possible workaround is to use LiberalEmailAddressValidator. However, this validator is far too liberal to be useful. If the email address is not null, LiberalEmailAddressValidator will say it's a valid email address.