diff --git a/tutormail/server.py b/tutormail/server.py
index 8efe037..2849771 100644
--- a/tutormail/server.py
+++ b/tutormail/server.py
@@ -5,9 +5,9 @@
 import logging
 import datetime
 import textwrap
+import itertools
 import traceback
 
-import emailtunnel
 from emailtunnel import SMTPForwarder, Message, InvalidRecipient
 from emailtunnel.mailhole import MailholeRelayMixin