diff --git a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
index ae7f18bfe..a97e8db7b 100644
--- a/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/simple_policy.ex
@@ -191,6 +191,18 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicy do
     |> MRF.instance_list_from_tuples()
   end
 
+  @impl true
+  def id_filter(id) do
+    host_info = URI.parse(id)
+
+    with {:ok, _} <- check_accept(host_info, %{}),
+         {:ok, _} <- check_reject(host_info, %{}) do
+      true
+    else
+      _ -> false
+    end
+  end
+
   @impl true
   def filter(%{"type" => "Delete", "actor" => actor} = activity) do
     %{host: actor_host} = URI.parse(actor)
diff --git a/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs b/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs
index 1a51b7d30..f49a7b8ff 100644
--- a/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs
+++ b/test/pleroma/web/activity_pub/mrf/simple_policy_test.exs
@@ -252,6 +252,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       remote_message = build_remote_message()
 
       assert SimplePolicy.filter(remote_message) == {:ok, remote_message}
+      assert SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "activity has a matching host" do
@@ -260,6 +261,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       remote_message = build_remote_message()
 
       assert {:reject, _} = SimplePolicy.filter(remote_message)
+      refute SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "activity matches with wildcard domain" do
@@ -268,6 +270,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       remote_message = build_remote_message()
 
       assert {:reject, _} = SimplePolicy.filter(remote_message)
+      refute SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "actor has a matching host" do
@@ -276,6 +279,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       remote_user = build_remote_user()
 
       assert {:reject, _} = SimplePolicy.filter(remote_user)
+      refute SimplePolicy.id_filter(remote_user["id"])
     end
 
     test "reject Announce when object would be rejected" do
@@ -288,6 +292,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       }
 
       assert {:reject, _} = SimplePolicy.filter(announce)
+      # Note: Non-Applicable for id_filter/1
     end
 
     test "reject by URI object" do
@@ -300,6 +305,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       }
 
       assert {:reject, _} = SimplePolicy.filter(announce)
+      # Note: Non-Applicable for id_filter/1
     end
   end
 
@@ -370,6 +376,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
 
       assert SimplePolicy.filter(local_message) == {:ok, local_message}
       assert SimplePolicy.filter(remote_message) == {:ok, remote_message}
+      assert SimplePolicy.id_filter(local_message["actor"])
+      assert SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "is not empty but activity doesn't have a matching host" do
@@ -380,6 +388,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
 
       assert SimplePolicy.filter(local_message) == {:ok, local_message}
       assert {:reject, _} = SimplePolicy.filter(remote_message)
+      assert SimplePolicy.id_filter(local_message["actor"])
+      refute SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "activity has a matching host" do
@@ -390,6 +400,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
 
       assert SimplePolicy.filter(local_message) == {:ok, local_message}
       assert SimplePolicy.filter(remote_message) == {:ok, remote_message}
+      assert SimplePolicy.id_filter(local_message["actor"])
+      assert SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "activity matches with wildcard domain" do
@@ -400,6 +412,8 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
 
       assert SimplePolicy.filter(local_message) == {:ok, local_message}
       assert SimplePolicy.filter(remote_message) == {:ok, remote_message}
+      assert SimplePolicy.id_filter(local_message["actor"])
+      assert SimplePolicy.id_filter(remote_message["actor"])
     end
 
     test "actor has a matching host" do
@@ -408,6 +422,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SimplePolicyTest do
       remote_user = build_remote_user()
 
       assert SimplePolicy.filter(remote_user) == {:ok, remote_user}
+      assert SimplePolicy.id_filter(remote_user["id"])
     end
   end