Some communities are not synchronizing on my own instance even though I’m subscribed.
Some examples:
- https://lemmings.world/c/gog@lemmy.world
- https://lemmings.world/c/php@kbin.social
- https://lemmings.world/c/gaming@kbin.social
- https://lemmings.world/c/gaming@lemmy.ml
Why is that?
There is no synching of historic content. Only new activities are federated.
Look at https://lemmy.ml/instances and you’ll see that your instance lemmings.world is federated with lemmy.ml. So federation should start soon.
Check your webserver for requests to “/.well-known/webfinger” from the IPs of other instances. This is the “starting point” of ActivityPub as far as I have understood it.
Ah, didn’t know the history isn’t synced.