diff --git a/install/tpl/server.ini.master b/install/tpl/server.ini.master
index a038e833beb1a20c9324eb20f9401ed7598343e9..f6d1b2d88c2e8e64999001365a60569c64131070 100644
--- a/install/tpl/server.ini.master
+++ b/install/tpl/server.ini.master
@@ -58,7 +58,7 @@ mailbox_size_limit=0
 message_size_limit=0
 mailbox_soft_delete=0
 mailbox_quota_stats=y
-realtime_blackhole_list=zen.spamhaus.org
+realtime_blackhole_list=
 overquota_notify_threshold=90
 overquota_notify_admin=y
 overquota_notify_reseller=y