diff --git a/contrib/python3-whitelist b/contrib/python3-whitelist
--- a/contrib/python3-whitelist
+++ b/contrib/python3-whitelist
@@ -363,6 +363,7 @@
 test-parseindex2.py
 test-patch-offset.t
 test-patch.t
+test-patchbomb-tls.t
 test-pathconflicts-merge.t
 test-pathconflicts-update.t
 test-pathencode.py
diff --git a/tests/dummysmtpd.py b/tests/dummysmtpd.py
--- a/tests/dummysmtpd.py
+++ b/tests/dummysmtpd.py
@@ -26,7 +26,7 @@
     def __init__(self, localaddr):
         smtpd.SMTPServer.__init__(self, localaddr, remoteaddr=None)
 
-    def process_message(self, peer, mailfrom, rcpttos, data):
+    def process_message(self, peer, mailfrom, rcpttos, data, **kwargs):
         log('%s from=%s to=%s\n' % (peer[0], mailfrom, ', '.join(rcpttos)))
 
     def handle_error(self):