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.
In my case, yes. I asked for a reason written in code (working or not). Since I intend to be a DevOps focused instance, there’s no excuse. Most humans would read the application and I don’t feel bad for denying based on this requirement.
Also helps that after 8 of those bots apps, the message is very similar. If there was a human in that mix, they can dm me and ask for reconsideration.