diff --git a/hosts/knot/default.nix b/hosts/knot/default.nix
index da09032e..f7eea8f5 100644
--- a/hosts/knot/default.nix
+++ b/hosts/knot/default.nix
@@ -95,10 +95,17 @@
         }
       ];
 
-      remotes = [ {
-        id = "all";
-        remote = [ "ns.spaceboyz.net" "ns0.q-ix.net" "ns1.supersandro.de" ];
-      } ];
+      remotes = [
+        {
+          id = "all";
+          remote = [ "ns.spaceboyz.net" "ns1.supersandro.de" ];
+        }
+        {
+          # TODO: drop
+          id = "q-ix";
+          remote = [ "ns0.q-ix.net" ];
+        }
+      ];
 
       server = {
         answer-rotation = true;
@@ -145,13 +152,13 @@
           notify = [ "ns1.supersandro.de" ];
           storage = "/var/lib/knot/catalog";
         }
-      ] ++ map ({ acl ? [], ... }@zone: {
+      ] ++ map ({ acl ? [], notify ? [], ... }@zone: {
         inherit (zone) domain;
         template = "c3d2";
-        notify = [ "all" ];
+        notify = [ "all" ] ++ notify;
         acl = [ "axfr" "zone_xfr" ] ++ acl;
       }) [
-        { domain = "c3dd.de"; }
+        { domain = "c3dd.de"; notify = [ "legacy" ]; }
         { domain = "c3d2.de"; acl = [ "jabber" ]; }
         { domain = "hq.c3d2.de"; }
         { domain = "dyn.hq.c3d2.de"; }
@@ -160,11 +167,11 @@
         { domain = "c3d2.ffdd"; }
         { domain = "c3d2.space"; }
         { domain = "c3d2.social"; }
-        { domain = "cccdd.de"; }
+        { domain = "cccdd.de"; notify = [ "legacy" ]; }
         { domain = "dresden.ccc.de"; }
         { domain = "datenspuren.de"; }
         { domain = "netzbiotop.org"; }
-        { domain = "pentamedia.org"; }
+        { domain = "pentamedia.org"; notify = [ "legacy" ]; }
         { domain = "zentralwerk.ffdd"; }
 
         { domain = "2001-67c-1400-2240.ip6.arpa"; }