diff --git a/config/net/upstream.nix b/config/net/upstream.nix
index a2c6dcf..850dfe1 100644
--- a/config/net/upstream.nix
+++ b/config/net/upstream.nix
@@ -2,7 +2,7 @@
 let
   servHosts = config.site.net.serv.hosts4;
   inherit (config.site.net.c3d2.hosts4) dn42;
-  inherit (config.site.net.flpk.hosts4) c3d2-web leon;
+  inherit (config.site.net.flpk.hosts4) c3d2-web leon mailtngbert;
 in
 {
   site.hosts = {
@@ -197,43 +197,43 @@ in
           sourcePort = 3479;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 25;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 465;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 587;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 110;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 143;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 993;
         }
         {
-          destination = servHosts.mailtngbert;
+          destination = mailtngbert;
           proto = "tcp";
           reflect = true;
           sourcePort = 995;