diff --git a/nixos/queen/mail-server.nix b/nixos/queen/mail-server.nix
index aaebcc6..d03cbe6 100644
--- a/nixos/queen/mail-server.nix
+++ b/nixos/queen/mail-server.nix
@@ -27,7 +27,6 @@
         hashedPasswordFile = config.sops.secrets."mailpass".path;
       };
     };
-    openFirewall = true;
     rejectRecipients = ["no-reply@nextcloud.gladtherescake.eu"];
     certificateScheme = "acme-nginx";
   };