hubzilla won't delete-activity-inbox on server 2 server communication (activitypub w3c compliment)
I made a post on mastodon, people got it on hubzilla... I deleted the post on mastodon.. hubzilla did not respect the federation and kept the post online.
https://www.w3.org/TR/2018/REC-activitypub-20180123/#delete-activity-inbox
The side effect of receiving this is that (assuming the object is owned by the sending actor / server) the server receiving the delete activity SHOULD remove its representation of the object with the same id, and MAY replace that representation with a Tombstone object.
(Note that after an activity has been transmitted from an origin server to a remote server, there is nothing in the ActivityPub protocol that can enforce remote deletion of an object's representation).
Edited by Albatroz Jeremias