fix issues

modules/nixos/mail-server/mail.nix

@@ -1,22 +1,23 @@
 { config, ... }:
 {
-  security.acme.acceptTerms = true;
+  security.acme = {
+    acceptTerms = true;
+    defaults.email = "love@billenius.com";
+  };
   networking.firewall.allowedTCPPorts = [ 80 ];
   services.nginx.virtualHosts.${config.mailserver.fqdn}.enableACME = true;
 
   mailserver = {
     enable = true;
-    stateVersion = 4;
     fqdn = "mail.billenius.com";
     domains = [ "billenius.com" ];
-
-    x509.useACMEHost = config.mailserver.fqdn;
+    certificateScheme = "acme";
 
     # A list of all login accounts. To create the password hashes, use
     # nix-shell -p mkpasswd --run 'mkpasswd -s'
-    accounts = {
+    loginAccounts = {
       "love@billenius.com" = {
-        hashedPasswordFile = ../../../resources/mail-server/love@billenius.com;
+        hashedPasswordFile = "${../../../resources/mail-server}/love@billenius.com";
         aliases = [ "postmaster@billenius.com" ];
       };
     };