is there a way to limit the registration per IP to avoid spam (manually registrations with fake emails)?
If a user has registered one account, he will not be able to register a second one with the same IP (optionally for X time)
@zerefgg this function can only be made by the admin
This is an old topic, but for those wondering, this is best done via the registration queue.
From there you can see all other accounts with matching IPs and approve/deny as needed.