lib/pleroma/workers/receiver_worker.ex

@@ -12,6 +12,7 @@ defmodule Pleroma.Workers.ReceiverWorker do
     with {:ok, res} <- Federator.perform(:incoming_ap_doc, params) do
       {:ok, res}
     else
+      {:error, :origin_containment_failed} -> {:cancel, :origin_containment_failed}
       {:error, {:reject, reason}} -> {:cancel, reason}
       e -> e
     end

test/pleroma/web/federator_test.exs

@@ -153,7 +153,7 @@ defmodule Pleroma.Web.FederatorTest do
       }
 
       assert {:ok, job} = Federator.incoming_ap_doc(params)
-      assert {:error, :origin_containment_failed} = ObanHelpers.perform(job)
+      assert {:cancel, :origin_containment_failed} = ObanHelpers.perform(job)
     end
 
     test "it does not crash if MRF rejects the post" do