PYTHON-1222 - Attempt to fix pooling test on zSeries

test/test_pooling.py

@@ -469,12 +469,11 @@ class TestPoolMaxSize(_TestPoolingBase):
         with self.assertRaises(ValueError):
             rs_or_single_client(maxPoolSize=0)
 
-    @unittest.skip("PYTHON-1222")
     def test_max_pool_size_with_connection_failure(self):
         # The pool acquires its semaphore before attempting to connect; ensure
         # it releases the semaphore on connection failure.
         test_pool = Pool(
-            ('example.com', 27017),
+            ('somedomainthatdoesntexist.org', 27017),
             PoolOptions(
                 max_pool_size=1,
                 connect_timeout=1,