Normally Lemmy returns an error if activities cant be handled (eg instance is down). Then the sending instance keeps retrying until it is successful. But in this case its a bit different, and the sending looked successful.

Anyway I made a change to the federation library to add Host header automatically if missing, then this problem wont happen anymore in the future.

Old posts and comments will come in when we receive votes or replies for them. But missing votes won’t be federated.

I found it now, posts are coming in normally again.

Found the problem, I had commented out the Host header in nginx thinking it would not be necessary. Turns out I was wrong. Adding the header back in fixed the problem.

Big thanks for notifying about this!

You’re right, its also really noticable if you just compare the All feed, on lemmy.ml almost everything from local users. Most posts from other instances are missing. In the server logs are a lot of errors like this:

lemmy-1  |    0: lemmy_server::root_span_builder::HTTP request
lemmy-1  |            with http.method=POST http.scheme="http" http.host=0.0.0.0:10633 http.target=/inbox otel.kind="server" request_id=780b6573-2672-4361-87c2-6ece46e272ee
lemmy-1  |              at src/root_span_builder.rs:16
lemmy-1  | 2026-06-09T17:34:25.537123Z  WARN lemmy_server::root_span_builder: Unknown: Incoming activity has invalid signature

I thought at first that it would be related to the new 0.19.19 release, but downgrading to 0.19.18 doesnt fix the problem.

Issue link: https://github.com/LemmyNet/lemmy/issues/6581

Dont know whats going on with these comments, but federation status shows up to date in both directions:

• https://phiresky.github.io/lemmy-federation-state/site?domain=hexbear.net
• https://phiresky.github.io/lemmy-federation-state/site?domain=lemmy.ml

No worries. I suppose such temporary federation problems happen occasionally, but you wouldn’t notice if you only browse a single instance. Do you know if any of the involved instances was down or unreachable around that time? Then it would be normal that federation gets paused for a time while waiting for the instance to come online.

In the OP you are looking at two different /c/science communities, namely !science@lemmy.ml and !science@lemmygrad.ml. So the “same” posts you are seeing are just crossposts by the same user. On this site you can see the outgoing federation status (for lemmy.ml in this case). Hexbear is listed under “up to date”, and for lemmygrad as well.

Such problems can also happen because of language settings or user blocks. So best view these post listings while logged out or in a private browser window.

Got it, was a problem in pictrs. Upgraded to the latest version and it seems fully fixed now.

https://git.asonix.dog/asonix/pict-rs/releases/tag/v0.5.22#fix-https-proxy-and-download

It seems like there was a badly behaved script or possibly an attack.

https://github.com/LemmyNet/lemmy/issues/6010

To see everything you need to select all languages (click at top of the list, then shift + click at the bottom). I believe if you select only undetermined you wont see posts with a language specified, but not totally sure.

You can enable multiple languages with ctrl + click. And user blocks might be another reason for missing posts.

Im seeing the same posts in both cases, so its probably related to your account settings. For example user blocks, language settings etc.

I had a look at those communities, the only one which looks out of date is monero.town. And that instance has federation problems with many other instances, as you can see here under “lagging instances”.

cc @admin@monero.town

Funny, Mastodon just posted a similar thing about creating a foundation. But the problem is, the existence of a foundation does nothing to prevent billionaires from controlling social media. For billionaires its very easy to donate a few hundred thousand USD to the foundation and gain influence that way. I expect that Bluesky will be fine for the first years (maybe like early Twitter), but sooner or later the foundation will take decisions that the users dont like, and there is nothing they can do about it.

In my view, the only way to avoid influence from billionaires is to avoid any large centralized structures. In the Fediverse there are dozens of platforms and thousands of instances. Even if a billionaire were to take control over a couple of projects or large instances, people would create forks in a matter of days. Some admins would block these corrupted instances, and their users would barely notice that anything changed.

So Bluesky is just trying to repeat something that has already failed. The Fediverse is the future, but it will take a long time for most people to understand that.

What you list as disadvantages are exactly the main benefits of a federated wiki. For a contentious subject which can be interpreted in multiple ways, there should be multiple different articles which present these views. It can be possible to represent other viewpoints if they share a common root, but as soon as there is a fundamentally different understanding that breaks down.

Additionally, even a very large encyclopedia like Wikipedia cannot include all topics that users want to write about. For example when it comes to TV series, books or details about small places, it often doesnt meet the notability requirements and gets removed. So for these topics people need to use entirely separate platforms like Fandom (which are full of advertising). Ibis can allow all these topics to be present in a single network, accessible from a single user interface.

This would be neat to generate forum avatars, to show something similar to your real face.

Thank you, fixed!

No domestic flight, just Europe -> Texas -> Mexico.

Not like that, they didn’t let me board my flight from Europe to Texas. Even though I had a connecting flight to Mexico few hours later. Why can’t they have a visa free transit zone like every other country in the world?