What is the correct Validation Pattern format to add to a Formerly email field in the Craft admin control panel if I want to stop any submissions from email addresses with a .ru TLD?

I've tried:


But they do nothing.


Try find the regex string in https://regex101.com/ where you can define your pos and neg examples.


See https://stackoverflow.com/questions/16398471/regex-for-string-not-ending-with-given-suffix

  • Thanks for responding, but it doesn't work – user8844 Sep 27 '18 at 20:09
  • My code is pure regex code, it should probably be converted to php. Try add delimiters /.*(?:(?!ru).).$/mu – lenka Sep 28 '18 at 22:07
  • Yes, the problem is probably with the plugin that I am trying to use, I dont know what the format should be, or how it is supposed to work, and there doesn't appear to be any documentation – user8844 Sep 29 '18 at 11:12

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