Use proper ports

hosts/cube/mail.nix

@@ -10,11 +10,22 @@ in serverSystemConfiguration {
       imap.host         = domain;
       imap.passwordFile = config.age.secrets."cube.mail.password".path;
       imap.username     = "contact@${domain}";
+
+      listenAddress = "::";
+      port          = 9020;
     };
 
-    dovecot = enabled {};
-    postfix = enabled {};
-    rspamd  = enabled {};
+    dovecot = enabled {
+      port = 9021;
+    };
+
+    postfix = enabled {
+      port = 9022;
+    };
+
+    rspamd  = enabled {
+      port = 9023;
+    };
   };
 
   mailserver = enabled {

hosts/cube/nginx.nix

@@ -4,8 +4,13 @@ serverSystemConfiguration {
   networking.firewall.allowedTCPPorts = [ 80 443 ];
 
   services.prometheus.exporters = {
-    nginxlog = enabled {};
-    nginx    = enabled {};
+    nginxlog = enabled {
+      port = 9011;
+    };
+
+    nginx    = enabled {
+      port = 9010;
+    };
   };
 
   services.nginx = enabled {

hosts/cube/prometheus.nix

@@ -2,8 +2,11 @@
 
 serverSystemConfiguration {
   services.prometheus = enabled {
+    port = 9000;
+
     exporters.node = enabled {
       enabledCollectors = [ "systemd" ];
+      port              = 9001;
     };
   };
 }