Networks aren't a function

lib/fudo/networks.nix

@@ -10,4 +10,16 @@ in {
     description = "A map of networks to network definitions.";
     default = { };
   };
+
+  config = let
+    domain-name = config.instance.local-domain;
+    local-networks = map (network: "ip4:${network}")
+      config.fudo.domains.${domain-name}.local-networks;
+    local-net-string = concatStringsSep " " domain-local-nets;
+  in {
+    fudo.networks.${domain-name}.verbatim-dns-records = [
+      ''@ IN TXT "v=spf1 mx ${local-net-string} -all"''
+      ''@ IN SPF "v=spf1 mx ${local-net-string} -all"''
+    ];
+  };
 }

lib/fudo/users.nix

@@ -142,7 +142,7 @@ in {
     in {
       General = {
         Verbosity = 10;
-        Domain = local-domain;
+        # Domain = local-domain;
         "Local-Realms" = local-realm;
       };
       Translation = {