added mail stuff

modules/mail/default.nix

@@ -0,0 +1,72 @@
+{ config, lib, ... }: let
+  inherit (config) conf;
+  inherit (lib) mkIf;
+in mkIf conf.mail.enable {
+  services.stalwart-mail = {
+    enable = true;
+    openFirewall = true;
+    settings = {
+      server = {
+        hostname = "chpu.eu";
+        tls = {
+          enable = true;
+          implicit = true;
+        };
+        listener = {
+          smtp = {
+            protocol = "smtp";
+            bind = "[::]:25";
+          };
+          submissions = {
+            protocol = "smtp";
+            bind = "[::]:465";
+          };
+          imaps = {
+            protocol = "imap";
+            bind = "[::]:993";
+          };
+          jmap = {
+            protocl = "jmap";
+            bind = "[::]:8080";
+            url = "https://chpu.eu";
+          };
+          management = {
+            protocol = "http";
+            bind = [ "127.0.0.1:8080" ];
+          };
+        };
+      };
+      lookup.default = {
+        hostname = "chpu.eu";
+        domain = "chpu.eu";
+      };
+      certificate.default = {
+        cert = "%{file:/var/lib/acme/chpu.eu/cert.pem}%";
+        private-key = "%{file:/var/lib/acme/chpu.eu/key.pem}";
+      };
+      session.auth = {
+        mechanism = "[plain]";
+        directory = "'in-memory'";
+      };
+      storage.directory = "'in-memory'";
+      session.rcpt.directory = "'in-memory'";
+      queue.outbound.next-hop = "'local'";
+      directory."imap".lookup.demains = [ "chpu.eu" ];
+      directory."in-memory" = {
+        type = "memory";
+        principals = [
+          {
+            class = "individual";
+            name = "Mira Chacku Purakal";
+            secret = "%{file:/root/email-mira-passwd}%";
+            email = [ "mira@chpu.eu" ];
+          }
+        ];
+      };
+      authentication.fallback-admin = {
+        user = "admin";
+        secret = "%{file:/root/stalwart-admin-pwd}%";
+      };
+    };
+  };
+}