Please. Captcha by default. Email domain filters. Auto-block federation from servers that don't respect. By default. Urgent.
And yes, to refute some comments, this publication is being upvoted by bots. A single computer was needed, not "thousands of dollars" spent.
Obviously biased, but I'm really concerned this will lead to it becoming infeasible to self-host with working federation and result in further centralization of the network.
Mastodon has a ton more users and I'm not aware of that having to resort to IRC-style federation whitelists.
I'm wondering if this is just another instance of kbin/lemmy moderation tools being insufficient for the task and if that needs to be fixed before considering breaking federation for small/individual instances.
He explained it already. It looks for a ratio of number of users to posts. If your "small" instance has 5000 users and 2 posts, it would probably assume a lot of those users would be spam bots. If your instance has 2 users and 3 posts, it would assume your users are real. There's a ratio, and the admin of each server that utilizes it can control the level at which it assumes a server is overrun by spam accounts.