fix sending campaign

cartero/utils/sending.py

@@ -138,7 +138,9 @@ class CampaignDeliver(object):
         excluded_emails = ExcludedEmail.objects.all() \
             .values_list('email', flat=True)
 
-        contacts = self.contact_list.contacts.exclude(email__in=excluded_emails)
+        contacts = self.campaign.contact_list.contacts.exclude(
+            email__in=excluded_emails
+        )
         if testing:
             contacts = contacts.filter(testing=True)
         return contacts