In an attempt to reduce registration spam that has lately been affecting some Mastodon servers on Masto.host I will be applying a custom patch to Mastodon v3.2.1.
This will require a restart of instances hosted on Masto.host and cause ~30 seconds of downtime.
You can read the details here: https://masto.host/testing-custom-code-to-fight-spam-registration-on-mastodon/
Do let me know if you notice any registration problems with this patch and if you were getting regular spam registrations see if there is any reduction in the next days.