first import of mailserver config

mailserver.nix

@@ -0,0 +1,18 @@
+{ config, pkgs, ... }:
+
+{
+  # Import some configuration as they are too long to be easily readable here
+  imports = [ 
+    ./dovecot.nix
+    ./postfix.nix
+    ./postfixadmin.nix
+    ./roundcube.nix
+    ./rspamd.nix
+  ];
+  users.groups."${config.variables.vmailGroup}" = { gid = config.variables.vmailGID; };
+  users.users."${config.variables.vmailUser}" = {
+    uid = config.variables.vmailUID;
+    group = config.variables.vmailGroup;
+    hashedPassword = "!";
+  };
+}