diff --git a/hosts/containers/logging/configuration.nix b/hosts/containers/logging/configuration.nix
index 3ba5599a..6ceee46d 100644
--- a/hosts/containers/logging/configuration.nix
+++ b/hosts/containers/logging/configuration.nix
@@ -53,11 +53,11 @@
     passwordSecret =
       "SDwK3ug9U4gYSVtj3h22i0l57QO6p5RE58sNehAgU3vXgqGa2HuNyhL19vhoUKFqy28rqGfDQkRD5834NqPi5wLsy8H1hz5V";
     # mongo.serv.zentralwerk. ?
-    elasticsearchHosts = [ "http://elastic1.serv.zentralwerk.org:9200" ];
+    elasticsearchHosts = [ "http://elastic1.serv.zentralwerk.dn42:9200" ];
     rootPasswordSha2 =
       "3e784172684dcd89d66175b8719cd7894cc96b454ef1d5aa74bd92b3c57da7cd";
     # mongo.serv.zentralwerk. ?
-    mongodbUri = "mongodb://mongo.serv.zentralwerk.org/graylog";
+    mongodbUri = "mongodb://mongo.serv.zentralwerk.dn42/graylog";
     extraConfig = ''
       http_bind_address = 0.0.0.0:9000
       http_publish_uri = http://logging.serv.zentralwerk.org/