Issue #11927: SMTP_SSL now uses port 465 by default as documented.  Patch by Kasun Herath.
diff --git a/Lib/test/test_smtpnet.py b/Lib/test/test_smtpnet.py
index 6634df7..1571ca3 100644
--- a/Lib/test/test_smtpnet.py
+++ b/Lib/test/test_smtpnet.py
@@ -17,6 +17,13 @@
         server.ehlo()
         server.quit()
 
+    def test_connect_default_port(self):
+        support.get_attribute(smtplib, 'SMTP_SSL')
+        with support.transient_internet(self.testServer):
+            server = smtplib.SMTP_SSL(self.testServer)
+        server.ehlo()
+        server.quit()
+
 def test_main():
     support.run_unittest(SmtpSSLTest)