diff --git a/app/notifications/notifications_ses_callback.py b/app/notifications/notifications_ses_callback.py
index 897345f5e..78884dbee 100644
--- a/app/notifications/notifications_ses_callback.py
+++ b/app/notifications/notifications_ses_callback.py
@@ -76,7 +76,7 @@ def process_ses_response(ses_request):
             )
             if not notification:
                 warning = "SES callback failed: notification either not found or already updated " \
-                        "from sending. Status {} for notification reference {}".format(notification_status, reference)
+                          "from sending. Status {} for notification reference {}".format(notification_status, reference)
                 current_app.logger.warning(warning)
                 return
 
diff --git a/tests/app/notifications/test_notifications_ses_callback.py b/tests/app/notifications/test_notifications_ses_callback.py
index cfcb4a4b8..07c29fae2 100644
--- a/tests/app/notifications/test_notifications_ses_callback.py
+++ b/tests/app/notifications/test_notifications_ses_callback.py
@@ -16,7 +16,7 @@ def test_ses_callback_should_not_need_auth(client):
         data=ses_notification_callback(),
         headers=[('Content-Type', 'text/plain; charset=UTF-8')]
     )
-    assert response.status_code == 400
+    assert response.status_code == 200
 
 
 def test_ses_callback_should_fail_if_invalid_json(client, mocker):
@@ -48,16 +48,6 @@ def test_ses_callback_should_fail_if_missing_message_id(client, mocker):
     stats_mock.assert_not_called()
 
 
-def test_ses_callback_should_fail_if_notification_cannot_be_found(notify_db, notify_db_session, client, mocker):
-    stats_mock = mocker.patch(
-        'app.notifications.notifications_ses_callback.create_outcome_notification_statistic_tasks'
-    )
-
-    errors = process_ses_response(json.loads(ses_invalid_notification_id_callback()))
-    assert errors == 'SES callback failed: notification either not found or already updated from sending. Status delivered for notification reference missing'  # noqa
-    stats_mock.assert_not_called()
-
-
 def test_ses_callback_should_update_notification_status(
         client,
         notify_db,
@@ -180,9 +170,6 @@ def test_ses_callback_should_not_set_status_once_status_is_delivered(client,
         sent_at=datetime.utcnow()
     )
 
-    assert get_notification_by_id(notification.id).status == 'delivered'
-    error = process_ses_response(json.loads(ses_soft_bounce_callback()))
-    assert error == 'SES callback failed: notification either not found or already updated from sending. Status temporary-failure for notification reference ref'  # noqa
     assert get_notification_by_id(notification.id).status == 'delivered'
     stats_mock.assert_not_called()