email address validation implemented in class.validator.php reject some addresses that are RFC2822 compliant. in fact mail addresses in user@domain.local are rejected, but they are RFC2822 compliant.
proposed patch against 1.6RC2 attached implements an RFC2822 compliant email validation function, directly inspired from http://www.ilovejackdaniels.com/php/email-address-validation(http://www.ilovejackdaniels.com/php/email-address-validation)
[emailValidation.patch.txt](https://forum.osticket.com/assets/files/migrated/c/e64508e6887ffb4cb156a32b1ad64ef.txt)