this post was submitted on 19 Jun 2025
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/inbox is the endpoint for federation with ActivityPub, so definitely on the right track. Try increasing verbosity to get a full stack traceback to where in the code it's bugging.
InboxTimeout means your server is taking too long to process API calls to /inbox, I've had them before too due to misconfiguration of the reverse proxy. Make sure you're passing on the right headers, especially the IP headers so they aren't rate limited and the Accept header so your server knows to send json when requested.
Troubleshooting federation gives many options for testing and checking your configuration, running through them might give your more insight.
So, here's the full error :
I've also been seeing this one :
As for the reverse proxy, I'm using Caddy with the configuration provided here, and it's supposed to pass those headers by default.
The suggested
curl
requests work.I wish there was a tool that could just tell what's wrong, like https://federationtester.matrix.org/ for Matrix...