diff --git a/modoboa/admin/constants.py b/modoboa/admin/constants.py
index f9e8a2599..fc85138ad 100644
--- a/modoboa/admin/constants.py
+++ b/modoboa/admin/constants.py
@@ -71,8 +71,6 @@ DNSBL_PROVIDERS = [
     "spamlist.or.kr",
     "spamrbl.imp.ch",
     "t3direct.dnsbl.net.au",
-    "tor.dnsbl.sectoor.de",
-    "torserver.tor.dnsbl.sectoor.de",
     "ubl.lashback.com",
     "ubl.unsubscore.com",
     "virbl.bit.nl",