diff -r cf1304fbc184 -r 14a60a0f7122 mercurial/mail.py
--- a/mercurial/mail.py	Tue Mar 26 02:27:23 2013 +0900
+++ b/mercurial/mail.py	Tue Mar 26 02:27:43 2013 +0900
@@ -57,6 +57,32 @@
             self.does_esmtp = 0
         return (resp, reply)
 
+if util.safehasattr(smtplib.SMTP, '_get_socket'):
+    class SMTPS(smtplib.SMTP):
+        '''Derived class to verify the peer certificate for SMTPS.
+
+        This class allows to pass any keyword arguments to SSL socket creation.
+        '''
+        def __init__(self, sslkwargs, keyfile=None, certfile=None, **kwargs):
+            self.keyfile = keyfile
+            self.certfile = certfile
+            smtplib.SMTP.__init__(self, **kwargs)
+            self.default_port = smtplib.SMTP_SSL_PORT
+            self._sslkwargs = sslkwargs
+
+        def _get_socket(self, host, port, timeout):
+            if self.debuglevel > 0:
+                print >> stderr, 'connect:', (host, port)
+            new_socket = socket.create_connection((host, port), timeout)
+            new_socket = sslutil.ssl_wrap_socket(new_socket,
+                                                 self.keyfile, self.certfile,
+                                                 **self._sslkwargs)
+            self.file = smtplib.SSLFakeFile(new_socket)
+            return new_socket
+else:
+    def SMTPS(sslkwargs, keyfile=None, certfile=None, **kwargs):
+        raise util.Abort(_('SMTPS requires Python 2.6 or later'))
+
 def _smtp(ui):
     '''build an smtp connection and return a function to send mail'''
     local_hostname = ui.config('smtp', 'local_hostname')