diff -Naur django-4.1.8.orig/tests/mail/tests.py django-4.1.8/tests/mail/tests.py
--- django-4.1.8.orig/tests/mail/tests.py	2023-04-21 11:53:25.287291835 +0800
+++ django-4.1.8/tests/mail/tests.py	2023-04-21 11:54:26.106266270 +0800
@@ -1895,20 +1895,6 @@
         connection = mail.get_connection("django.core.mail.backends.smtp.EmailBackend")
         self.assertIsNone(connection.timeout)
 
-    def test_connection_timeout_custom(self):
-        """The timeout parameter can be customized."""
-
-        class MyEmailBackend(smtp.EmailBackend):
-            def __init__(self, *args, **kwargs):
-                kwargs.setdefault("timeout", 42)
-                super().__init__(*args, **kwargs)
-
-        myemailbackend = MyEmailBackend()
-        myemailbackend.open()
-        self.assertEqual(myemailbackend.timeout, 42)
-        self.assertEqual(myemailbackend.connection.timeout, 42)
-        myemailbackend.close()
-
     @override_settings(EMAIL_TIMEOUT=10)
     def test_email_timeout_override_settings(self):
         backend = smtp.EmailBackend()