Setup mail server and restructure some things

config/hosts/tor-relay/configuration.nix

@@ -0,0 +1,29 @@
+{ ... }:
+{
+  boot.loader.grub = {
+    enable = true;
+    device = "/dev/vda";
+  };
+
+  networking = {
+    interfaces = {
+      "enp6s18".ipv6.addresses = [{
+        address = "2001:470:5429::B3";
+        prefixLength = 64;
+      }];
+    };
+
+    defaultGateway6 = {
+      address = "2001:470:5429::1";
+      interface = "enp6s18";
+    };
+
+    hostName = "tor-relay";
+    firewall = {
+      enable = true;
+      allowedTCPPorts = [ 9001 9030 ];
+    };
+  };
+
+  system.stateVersion = "23.05";
+}

config/hosts/tor-relay/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  imports = [
+    ./configuration.nix
+    ./tor.nix
+  ];
+}

config/hosts/tor-relay/tor.nix

@@ -0,0 +1,20 @@
+{ ... }:
+{
+  services.tor = {
+    enable = true;
+
+    relay = {
+      enable = true;
+      role = "relay";
+    };
+
+    settings = {
+      Nickname = "vsm";
+      ORPort = 9001;
+      DirPort = 9030;
+      ContactInfo = "admin@grzb.de";
+      RelayBandwidthRate = "40 MBits";
+      RelayBandwidthBurst = "50 Mbits";
+    };
+  };
+}