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Federation issues?
(slrpnk.net)
Blåhaj Lemmy is a Lemmy instance attached to blahaj.zone. This is a group for questions or discussions relevant to either instance.
Close! Basically, once the remote instance has verified a signature, they cache it, so they don't have to double check with the host instance every time. But when the keys change, and the remote instance is hosting a cached copy that doesn't match anymore, you run in to problems, until the cached copies expire, and the remote instance refreshes their keys.