I've created a broader solution with pattern matching:
[nodebb-plugin-email-whitelist] Email domain filter plugin 😉
CAPTCHA on registration
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To secure the forum from spambots a CAPTCHA would be handy. On our site we use playthru, a free non-annoying CAPTCHA.
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What's the URL of your site?
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It is used on the main site under contact -
Yep, it looks good. It will definitely cut down on bot registrations, but will not stop human spammers. IP bans and post deletions will take care of those.
