diff --git a/docs/topics/third-party-resources.md b/docs/topics/third-party-resources.md
index c4ac88255..cc29c4334 100644
--- a/docs/topics/third-party-resources.md
+++ b/docs/topics/third-party-resources.md
@@ -253,6 +253,7 @@ To submit new content, [open an issue][drf-create-issue] or [create a pull reque
 * [django-rest-framework-braces][django-rest-framework-braces] - Collection of utilities for working with Django Rest Framework. The most notable ones are [FormSerializer](https://django-rest-framework-braces.readthedocs.org/en/latest/overview.html#formserializer) and [SerializerForm](https://django-rest-framework-braces.readthedocs.org/en/latest/overview.html#serializerform), which are adapters between DRF serializers and Django forms.
 * [drf-haystack][drf-haystack] - Haystack search for Django Rest Framework
 * [django-rest-framework-version-transforms][django-rest-framework-version-transforms] - Enables the use of delta transformations for versioning of DRF resource representations.
+* [django-rest-messaging][django-rest-messaging], [django-rest-messaging-centrifugo][django-rest-messaging-centrifugo] and [django-rest-messaging-js][django-rest-messaging-js] - A real-time pluggable messaging service using DRM.
 
 ## Other Resources
 
@@ -357,3 +358,6 @@ To submit new content, [open an issue][drf-create-issue] or [create a pull reque
 [django-rest-framework-version-transforms]: https://github.com/mrhwick/django-rest-framework-version-transforms
 [djangorestframework-jsonapi]: https://github.com/django-json-api/django-rest-framework-json-api
 [html-json-forms]: https://github.com/wq/html-json-forms
+[django-rest-messaging]: https://github.com/raphaelgyory/django-rest-messaging
+[django-rest-messaging-centrifugo]: https://github.com/raphaelgyory/django-rest-messaging-centrifugo
+[django-rest-messaging-js]: https://github.com/raphaelgyory/django-rest-messaging-js
diff --git a/rest_framework/views.py b/rest_framework/views.py
index c13e74447..41d108e53 100644
--- a/rest_framework/views.py
+++ b/rest_framework/views.py
@@ -162,7 +162,7 @@ class APIView(View):
         """
         If request is not permitted, determine what kind of exception to raise.
         """
-        if not request.successful_authenticator:
+        if request.authenticators and not request.successful_authenticator:
             raise exceptions.NotAuthenticated()
         raise exceptions.PermissionDenied(detail=message)
 
diff --git a/tests/test_authentication.py b/tests/test_authentication.py
index 285a3210c..70eea3132 100644
--- a/tests/test_authentication.py
+++ b/tests/test_authentication.py
@@ -321,3 +321,28 @@ class FailingAuthAccessedInRenderer(TestCase):
         response = self.view(request)
         content = response.render().content
         self.assertEqual(content, b'not authenticated')
+
+
+class NoAuthenticationClassesTests(TestCase):
+    def test_permission_message_with_no_authentication_classes(self):
+        """
+        An unauthenticated request made against a view that containes no
+        `authentication_classes` but do contain `permissions_classes` the error
+        code returned should be 403 with the exception's message.
+        """
+
+        class DummyPermission(permissions.BasePermission):
+            message = 'Dummy permission message'
+
+            def has_permission(self, request, view):
+                return False
+
+        request = factory.get('/')
+        view = MockView.as_view(
+            authentication_classes=(),
+            permission_classes=(DummyPermission,),
+        )
+        response = view(request)
+        self.assertEqual(response.status_code,
+                         status.HTTP_403_FORBIDDEN)
+        self.assertEqual(response.data, {'detail': 'Dummy permission message'})