There's a community I belong to that's currently set to "mods only" posting mode, but there's no post or explanation in the community info, so I'm wondering if this was done by accident.

I'd like to contact the mods to ask about it but I don't see any indication of who they are or how to contact them. Is there any way to find this information?

How would I go with blocking/banning on my feed a user that is making multiple users on lots of communities, there's this user cm0002 that keeps on popping up and noticing patterns especially in news stuff, and just content feels really off.

I am on voyager app on Android and been blocking them every time but they keep on making more and more and more accounts on other instances and always just incredibly suspicious.

Is there a way to block a username from any instance like block "cm0002@*" or something?

Been doing this for months ever sense I noticed this user/not and no matter what I do there's always a new instance they join and start posting in new communities that usually about local news in the US.

How do you start a new community from the voyager app? I don't see the option/ ability anyplace? Does Lemmy.ml restrict that ability?

Since I've been seeing some bots creeping on here, I was wondering if there exists a Lemmy app that gives an exact timestamp of when a comment was posted, rather than using time elapsed.

For example, timestamp: posted 11/14/2025 11:26AM

Time elapsed: 3h ago

In my hunt for bots it would be super useful to see the timestamp, to discern if a bot is making a bunch of comments in the same minute. You can't quite discern that when it all says it happened 7 hours ago.

Any help is greatly appreciated :)

I let a bot subscribe to a bunch of communities on my instance and I think it has caused it to really slow down. Trying to prune what I can. Will removing or purging help? If so, which is best? Is there a way to do it in bulk?

I am pretty middle of the road when it comes to blocking, I don't block super often but do occasionally when I'm feeling it. In total over my time I've amassed something like 45 blocks, but looking at the list recently I realized that almost a third of those blocks are one user. I don't like their vibe, but they are a prolific poster and account creator. The last time I counted I had twelve blocks for their accounts, but is there a way to set up a block or filter that will keep up with them making accounts with the same name on dozens of instances?

I am not someone who follows/has interest in Geo-politics. In lemmy homepage majority of posts are political. Those lemmy’s I do not expect to have political posts in them like c/technology, c/memes, c/lemmyshitposts, their top posts are related to politics. My subscribed, local, and all is full of it. Is there a way to filter them out?

I am noticing that I have posted pics in communities and now they are showing up as "Failed to load media" and the sad emoji. I am also not able to post pictures or gifs at all anymore. Is there a general reason or a specific reason? I am using Voyager for Android, I'll see about trying in a browser or on desktop when I get more time. Sorry if this isn't allowed here, just don't know who to ask or how. Thank you.

Hello everyone,

I'm encountering an issue when trying to post from my Mastodon instance to my Lemmy instance. Both are running on separate virtual servers managed by Proxmox, and they communicate through a single reverse proxy.

Here is the relevant error log from the Lemmy web container:

2025-10-28T22:06:10.751716Z  WARN Error encountered while processing the incoming HTTP request: lemmy_server::root_span_builder: Unknown: URL failed verification: Localhost is only allowed in debug mode
2025-10-28T22:06:10.751717Z  TRACE tokio_postgres::connection: poll_flush: flushed    
2025-10-28T22:06:10.751766Z  INFO actix_web::middleware::logger: 192.168.100.12 'POST /inbox HTTP/1.1' 400 96 '-' 'Mastodon/4.4.8 (http.rb/5.3.1; +https://rollenspiel.social/)' 0.001290  

The key warning is:

URL failed verification: Localhost is only allowed in debug mode

It seems Lemmy is rejecting the request because it detects a localhost URL somewhere in the request or configuration, which is only permitted in debug mode.

Has anyone seen this error before or knows how to configure Lemmy or the reverse proxy to avoid this "localhost" URL verification failure? Any pointers on what to check or how to debug this further would be appreciated.

Thanks in advance!

Hello. As the title suggests, how do I delete my user account? There is no button in settings on the app and I can't login on the browser

Hi all,

I've been running my Lemmy server since 2023 with minor issues, however I recently had my server go down for about two weeks due to a drive failure (should have been a RAID array, I know, but when I set this up originally I wasn't sure if it would be a mainstay and then I never revisited my design).

So, this has brought about a couple different problems, first and foremost federation seems completely broken? My proxy configuration and cloudflare stuff has been unchanged, so I don't think that is the issue. However, I'm not receiving new posts, comments, or upvotes (after what gets synced initially).

Here are the logs from the lemmy backend:

2025-10-14T21:05:39.429156Z  WARN lemmy_server::root_span_builder: CouldntFindPost: CouldntFindPost

   0: lemmy_api_crud::post::read::get_post

           with data=Query(GetPost { id: Some(PostId(1495861)), comment_id: Some(CommentId(4689293)) }) local_user_view=None

             at crates/api_crud/src/post/read.rs:18

   1: lemmy_server::root_span_builder::HTTP request

           with http.method=GET http.scheme="http" http.host=lemmy:8536 http.target=/api/v3/post otel.kind="server" request_id=f47caa4f-2ef1-4bff-a7fa-f8d27c75294b

             at src/root_span_builder.rs:16

and lemmy-ui has:

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_person', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_comment', message: '' }

{ name: 'couldnt_find_post', message: '' }

{ name: 'couldnt_find_post', message: '' }

So I assume that posts are getting pushed across but not actually getting created?

The second question I have, and I fear there may be nothing i can do about this, is since I had to recreate my lemmy db I don't have any of the posts from my users on here anymore. They were all to other servers, so I assume there is some sort of copy out there. Is there a way that I can get them to federate back to my server? Or are they just lost to the ether of posts?

EDIT: The plot thickens...

I connected to the database, and I can see a ton of recent posts/comments/interactions, but those aren't showing up in the frontend? Maybe there is something messed up in my config, but its more or less what was in the docs (only changes were to make it work with my proxy vs the built-in nginx)

It appears that some instances have not resolved the unsubscribes properly, and I'm seeing errors like the below:

2025-10-07T12:20:11.488023Z  WARN Error encountered while processing the incoming HTTP request: lemmy_server::root_span_builder: CommunityHasNoFollowers: CommunityHasNoFollowers
   0: lemmy_apub::activities::community::announce::receive
             at crates/apub/src/activities/community/announce.rs:161
   1: lemmy_server::root_span_builder::HTTP request
           with http.method=POST http.scheme="http" http.host=lemmy.domain.ext http.target=/inbox otel.kind="server" request_id=02568c66-9ed6-4eb0-b533-77b19rcdef56 http.status_code=400 otel.status_code="OK"
             at src/root_span_builder.rs:16

Is there a way to determine which communities are throwing this error, and force the unsubscribe?

Is it possible to get the scaled sort to consider all posts over the last month or other timescales?

When I haven't been online for a while I tend to miss most of the stuff going on in my subscribed communities. If I sort by top of the month it only shows posts from the busiest communities.

It gives me the following error(im on android):

{"data":{"error":"unknown","message":"Request error: error sending request for url (http://127.0.0.1:8080/image): error trying to connect: tcp connect error: Connection refused (os error 111)"},"state":"success"}

I'm trying to link to a YouTube channel and after submitting it, there's some rewrite automation that breaks the link. I've tried by app and browser, and it happens on both. Editing the post doesn't fix it either.

https://www.youtube.com/channel/x

is rewritten to:

https://www.youtube.com/?watch=channel%2Fx

Hi,

This post has comments : https://jlai.lu/post/26123233

But when asking the API : https://jlai.lu/api/v3/comment/list?post_id=26123233&sort=Old

An empty array is returned.

Why ?

Thanks

How would I add a new ranking algorithm to Lemmy as a contributor? I'm a developer by trade, but unfamiliar with Rust and the codebase of Lemmy specifically. It doesn't seem like Lemmy has a concept of 'ranking plugins', so whatever I do would have to involve an MR.

Specifically, I'd like to introduce a ranking system that approximates Proportional Approval Voting, specifically using Thiele's elimination methods, like is used in LiquidFeedback.

I'm pretty sure that with a few tweaks to Thiele's rules, I can compute a complete ranking of all comments in a thread in O(ClogC + E + VlogC), where C is the number of comments, E is the total number of likes, and V is the number of users. This would also support partial approvals, upvotes could decay with age.

I believe this would mitigate the tendency towards echo chambers that Lemmy inherits from Reddit. Lemmy effectively uses Block Approval Voting with decays to rank comments and posts, leading to the same people dominating every conversation.

I just noticed that my pictrs image volume reached 20 GBs in size. Does Lemmy or pictrs not delete the cached images automatically after some time?

Doesn't affect usability, but I am curious if other people see the timestamps (i.e. '6 hours ago') next to posts and comments in another language before the page fully loads in.

In my case, the timestamps show up in Chinese (or Japanese Kanji?) and are replaced with English once the page fully loads. Am using Librewolf, have CJK fonts installed, and system is set to English, if that is relevant.

I get the first three and the last two but the others. When I switch them, they don't really seem to do anything except for the Show Avatars option which toggles the avatars. These settings also doesn't seem to exist in other frontends (like Blorp).

I just checked whatever sounded/looked good.

Hi, I would like to look for an instance primarily based on which other instances it doesn't federate with/block or whatever the term is. But clicking on the URL of a few instances, I can't find this information anywhere.

Thanks for any and all help.

I know I've seen it before, some website that translated a link to a post into a link to that same post, but on the instance of the user clicking the link. I cannot for the life of me seem to find it again, though.

It was not a browser extension.

Good day dear Lemmy community!
When I try to use lemmy's private messages, I get the following warning:

Warning: Private messages in Lemmy are not secure. Please create an account on Element.io for secure messaging.

It is very good to have this warning! However, can it be improved?
When I first encountered this wording, I was completely unsure whether the DMs would be totally public due to lemmy's limitations or its open stance, or whether the messages would have a similar security to e.g. email where your trust relies on TLS and the servers involved.

My proposal would be to change the wording to something like:

Warning: Private messages in Lemmy are not End-to-End encrypted. Please create an account on Element.io for secure messaging.

Or if the team is open to it,

Warning: Private messages in Lemmy are not End-to-End encrypted. Please use a platform with E2E encryption for private messaging.

Or if the team is even more open to it,

Warning: Private messages in Lemmy are not End-to-End encrypted. Please use a platform with E2E encryption for private messaging. Lemmy recommends Element.io and XMPP.

Thoughts? I'm ready to create a PR.

why #mastodon & other #fediverse instances won't provide #OpenID to use across web and to be able to login in to multiple web apps (including but not limited to fediverse)

#askfedi #asklemmy

@fediverse
!selfhosted@lemmy.world
!lemmy_support@lemmy.ml
@lemmy_support
!fediverse@lemmy.ml
@selfhosted