Lately we have been dealing with a few abusive members from Feddit.nl and we were unable to get in touch with the instance administrator.
Part of the problem is the instance’s open registrations which do not require you to enter an e-mail address during signup. This in combination with an inactive admin is a recipe for abuse.
We hope this is only temporary but we have to do this to protect our users.
Edit: we use fediseer, have a look https://gui.fediseer.com/instances/detail/lemmy.world
Edit 2: We got in touch with the Feddit.nl admin. Email requirements were added to the sign-up process and we’re setting up a communication channel. So that means we are federating with Feddit.nl again!
In general sure, but not for problems like this. That wouldn’t address the issue in the OP at all.
It won’t protect a server from getting illegal content on their drives. Best to defederate if that is happening and can’t be dealt with otherwise. If you have some other method of dealing with illegal content on your server and wanted to host a Lemmy instance that is federated with everything it would only be appealing to me if I could block instances myself.