The following modified Mastodon servers are a collection of automated accounts that create ~15,000 posts per day with the intent to generate traffic to related ad-farm web sites, using scraped and republished content.

pubeurope[.]com
newsbeep[.]org
theater[.]im

If your service prohibits uncurated bots, #spam, and/or inauthentic activity, we recommend you review your federation policy for these domains.

Learn more: https://connect.iftas.org/library/iftas-documentation/spam-fediverse-services/