trying to get postfix running

modules/monitoring.nix

@@ -45,8 +45,7 @@ in
       };
       postfix = {
         enable = true;
-        port = 25;
+        port = 9003;
-        user = config.serivces.postfix.user;
       };
     };
     scrapeConfigs = [
@@ -57,13 +56,20 @@ in
         }];
         scrape_interval = "15s";
       }
+      {
+        job_name = "postfix";
+        static_configs = [{
+          targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.postfix.port}" ];
+        }];
+        # scrape_interval = "60s";
+      }
     ];
   };
 
   # nginx reverse proxy
   services.nginx.virtualHosts.${domain} = {
     locations."/" = {
-      proxyPass = "http://localhost:${toString config.services.grafana.port}";
+      proxyPass = "http://localhost:${toString config.services.grafana.settings.server.http_port}";
       proxyWebsockets = true;
     };
   };

overlays/default.nix

@@ -1,6 +1,7 @@
 _final: prev:
 let
   inherit (prev) fetchurl;
+  inherit (prev) fetchFromGitHub;
 in
 {
   # AGDSN is running an outdated version that we have to comply to
@@ -11,5 +12,14 @@ in
       sha256 = "sha256-3w+FJezbo4DnS1N8pxrfO3WWWT8CGJtZqw6//IXMyN4=";
     };
   }));
+  # (hopefully) fix systemd journal reading
+  prometheus-postfix-exporter = prev.prometheus-postfix-exporter.overrideAttrs (old: rec {
+    src = fetchFromGitHub {
+      owner = "adangel";
+      repo = "postfix_exporter";
+      rev = "414ac12ee63415eede46cb3084d755a6da6fba23";
+      hash = "sha256-m1kVaO3N7XC1vtnxXX9kMiEFPmZuoopRUYgA7gQzP8w=";
+    };
+  });
 
 }