Claire a5a00d7f7a Fix email with empty domain name labels passing validation (#23246) ...

* Fix email with empty domain name labels passing validation

`EmailMxValidator` would allow empty labels because `Resolv::DNS` is
particularly lenient about them, but the email would be invalid and
unusable.

* Add tests

2023-01-24 20:18:41 +01:00

1.6 KiB

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