this post was submitted on 17 Jun 2023
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Explain Like I'm Five

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What does it mean by a community getting defederated in an instance? (lemmy.one)
submitted 1 year ago by [email protected] to c/explainlikeimfive
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I saw that beehaw.org was defederated from lemmy.world but not on lemmy.one. And I am on the latter one. What does it mean exactly?

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[–] 3migo 10 points 1 year ago (2 children)

Each Lemmy intance is hosted by a different person or entity. Lemmy World is hosted by User A, while Beehaw is hosted by User B.

The way federation works, however, is that it allows for User A to connect their server/Lemmy instance to User B's server/Lemmy instance. This allows for users on Server A to talk to people who are using Lemmy over on Server B.

However, letting your servers interact with other servers is not required. If users of one server are causing problems with your Lemmy instance, you can remove your server from theirs, which removes their access. This is referred to as defederation.

So when Beehaw is defederating other servers, it means they are blocking other servers from interacting with Beehaw.

[–] [email protected] 3 points 1 year ago

Got it. Thanks!

[–] seethepattern 2 points 1 year ago (1 children)

Is this why when I try to subscribe to a Beehaw server it says subscription pending?

[–] 3migo 4 points 1 year ago (1 children)

Exactly. Beehaw is no longer accepting users from other Lemmy instances, so your subscription will not go through to a Beehaw community, unless you are accessing it from either Beehaw, or one of the other instances Beehaw still federates with such as Lemmy.one.

[–] illi 1 points 1 year ago

So when I try to aubscribe to a community, but it says "pending" it is defederalized? Because I encountered it quite often. But some even show in my subscriptions, even though the community says "pending". Is this a bug or something?

Is there a way to know if an instance is defederalized to mine? Or should I simply not see those?