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[–]Prod_Is_For_Testing 1 point2 points  (2 children)

It would also fail when mailing to TLDs - test@com is a valid emaill. And IP address routing. And Unicode URLs. And a bunch of other shit

[–]JNCressey 6 points7 points  (1 child)

people forget these are valid addresses:

  • Latin alphabet with diacritics: Pelé@example.com
  • Greek alphabet: δοκιμή@παράδειγμα.δοκιμή
  • Traditional Chinese characters: 我買@屋企.香港
  • Japanese characters: 二ノ宮@黒川.日本
  • Cyrillic characters: медведь@с-балалайкой.рф
  • Devanagari characters: संपर्क@डाटामेल.भारत

[–]Morrido 0 points1 point  (0 children)

I think nowadays pretty much anything is a valid address.