1 files changed, 12 insertions, 1 deletions
diff --git a/hosts/kay/modules/www.nix b/hosts/kay/modules/www.nix
index a0b9c20..1447b1e 100644
--- a/hosts/kay/modules/www.nix
+++ b/hosts/kay/modules/www.nix
@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
 
 let
   domain = config.userdata.domain;
@@ -117,6 +117,17 @@ in
           extraConfig = "add_header Content-Type text/html;";
         };
       };
+
+      "mta-sts.${domain}" = defaultOpts // {
+        locations."= /.well-known/mta-sts.txt".return = ''200 "${
+          lib.strings.concatStringsSep "\\n" [
+            "version: STSv1"
+            "mode: enforce"
+            "mx: mail.${domain}"
+            "max_age: 86400"
+          ]
+        }"'';
+      };
     };
   };
 }