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Risks of running a Lemmy/Mbin instance?
(lemm.ee)
A community to talk about the Fediverse and all it's related services using ActivityPub (Mastodon, Lemmy, KBin, etc).
If you wanted to get help with moderating your own community then head over to !moderators@lemmy.world!
Learn more at these websites: Join The Fediverse Wiki, Fediverse.info, Wikipedia Page, The Federation Info (Stats), FediDB (Stats), Sub Rehab (Reddit Migration), Search Lemmy
Is there a way to choose which instances you want to include, instead of which ones you want to exclude? So the default is that no instances except the ones you explicitly allow, federate with you? Or is this against the spirit of the fediverse?
By default a fresh new instance will federate with no other instances period.
Instances only "learn" about the existence of an outside instance or community after a user enters a community+instance address in the search bar. After that, the home instance will sync with the remote instance and begin getting all new push data from that point on.
I don't know if Lemmy allows "whitelisting" of synced instances, such that it will auto synchronize with a provided list and ignore all others even if users search for them. I feel like it does, but I am not familiar enough with the backend to say yay or nay.
Yes that is afaik possible via https://fediseer.com/
Yes, it is possible.