fixes reset password test

tracim/tracim/tests/library/test_resetpassword.py

 from resetpassword.lib import _plain_send_mail
 
 from tracim.tests import TestStandard
-
+from smtplib import SMTPNotSupportedError
 
 class TestSerializers(TestStandard):
     application_under_test = 'nosmtp'
 
     def test_unit__plain_send_mail__ok(self):
         assert_raises(
-            ConnectionRefusedError,
+            (ConnectionRefusedError, SMTPNotSupportedError),
             _plain_send_mail,
             'Name of sender <email@sender.local>',
             'Recipient name <recipient@recipient.local>',