diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..af124f5
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,130 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1689068808,
+        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1689534811,
+        "narHash": "sha256-jnSUdzD/414d94plCyNlvTJJtiTogTep6t7ZgIKIHiE=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "6cee3b5893090b0f5f0a06b4cf42ca4e60e5d222",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1681358109,
+        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1689561325,
+        "narHash": "sha256-+UABrHUXtWJSc9mM7oEKPIYQEhTzUVVNy2IPG9Lfrj0=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "d8a38aea13c67dc2ce10cff93eb274dcf455753f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..0712cbb
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,56 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, rust-overlay, ... }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+        rustVersion = pkgs.rust-bin.stable.latest.default;
+        rustPlatform = pkgs.makeRustPlatform {
+          cargo = rustVersion;
+          rustc = rustVersion;
+        };
+        myRustBuild = rustPlatform.buildRustPackage {
+          pname = "tmpmail";
+          version = "0.1.0";
+          src = ./.;
+          cargoLock.lockFile = ./Cargo.lock;
+        };
+      in {
+        defaultPackage = myRustBuild;
+        devShell = pkgs.mkShell {
+          buildInputs =
+            [ (rustVersion.override { extensions = [ "rust-src" ]; }) ];
+        };
+        nixosModules.default = { config, lib, pkgs, ... }:
+          with lib;
+          let cfg = config.mawalu.services.norbert;
+          in
+        {
+          options.mawalu.services.rail = {
+            enable = mkEnableOption "Enable the rail tmpmail server";
+          };
+
+          config = mkIf cfg.enable {
+            systemd.services.rail = {
+              wantedBy = [ "multi-user.target" ];
+
+              serviceConfig = let pkg = self.packages.${pkgs.system}.default;
+              in {
+                Restart = "on-failure";
+                ExecStart = "${pkg}/bin/tmpmail";
+                DynamicUser = "yes";
+                AmbientCapabilities = ["CAP_NET_BIND_SERVICE"];
+              };
+            };
+          };
+        };
+
+      }
+    );
+}
\ No newline at end of file
diff --git a/result b/result
new file mode 120000
index 0000000..a8b373f
--- /dev/null
+++ b/result
@@ -0,0 +1 @@
+/nix/store/8d9xq25wj423gw523039k5x6i3kaqrdc-tmpmail-0.1.0
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index a4296d9..1792e4b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -16,7 +16,7 @@ fn main() {
 
     let http_state = Arc::clone(&state);
     let http_thread = thread::spawn(move || {
-        rouille::start_server("localhost:8005", move |request| {
+        rouille::start_server("127.0.0.1:8005", move |request| {
             http::http_handler(request, &http_state)
         })
     });
diff --git a/src/smtp.rs b/src/smtp.rs
index 21bb29b..c59b0cc 100644
--- a/src/smtp.rs
+++ b/src/smtp.rs
@@ -5,7 +5,7 @@ use mailparse::{parse_mail, MailHeaderMap, ParsedMail};
 use std::net::{TcpListener, TcpStream};
 
 pub fn start_server(state: State) {
-    let listener = TcpListener::bind("localhost:8025").unwrap();
+    let listener = TcpListener::bind("127.0.0.1:25").unwrap();
 
     for stream in listener.incoming() {
         match stream {