Comment on Errors in delivery report
I think your hub (which works perfectly) only appears there as a sender. The error message isn’t caused by your hub, but by
I’ve been observing both of them as ‘zombies’ for a very long time.
federatedhub.org and zotlabs.org.I’ve been observing both of them as ‘zombies’ for a very long time.
federatedhub.org is accessible, but hasn’t accepted any deliveries for a very, very long time (it gets stuck in the queue until it’s automatically deleted); zotlabs.org can be pinged, but isn’t accessible as a hub, which is why nothing can be delivered there either.
But why does my hub try to deliver my posts to them at all? I don't have any contacts from these nodes.
I always thought they would need to be in my contact list.
Your contacts might have had clones there.
It does not, it just let you know that they can not be reached.