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-rw-r--r--modules/vhack/ma/mail/module.nix297
1 files changed, 220 insertions, 77 deletions
diff --git a/modules/vhack/ma/mail/module.nix b/modules/vhack/ma/mail/module.nix
index cdc730f..75e20bb 100644
--- a/modules/vhack/ma/mail/module.nix
+++ b/modules/vhack/ma/mail/module.nix
@@ -4,11 +4,6 @@
...
}: let
cfg = config.vhack.mail;
- all_admins = [
- "sils@vhack.eu"
- "soispha@vhack.eu"
- "nightingale@vhack.eu"
- ];
in {
options.vhack.mail = {
enable = lib.mkEnableOption "sophisticated mail setup with simple-nixos-mailserver";
@@ -16,6 +11,217 @@ in {
type = lib.types.str;
description = "The fqdn mailserver should be served on.";
};
+
+ domains = lib.mkOption {
+ type = lib.types.listOf lib.types.str;
+ example = ["example.com"];
+ default = [];
+ description = "The domains that this mail server serves.";
+ };
+
+ accounts = lib.mkOption {
+ type = lib.types.attrsOf (
+ lib.types.submodule (
+ {name, ...}: {
+ options = {
+ name = lib.mkOption {
+ type = lib.types.str;
+ default = name;
+ example = "user1@example.com";
+ readOnly = true;
+ internal = true;
+ description = ''
+ The login username for this account.
+ '';
+ };
+
+ hashedPassword = lib.mkOption {
+ type = lib.types.nullOr lib.types.str;
+ default = null;
+ example = "$y$j9T$vfGrwkAaXCjCEWtVNMQck1$383uIXQmn2z0hnmVAA8kwFQmjNj78.nYbvWeyNLIaP1";
+ description = ''
+ The hashed login password for this account.
+
+ Use `mkpasswd` to create password hashes:
+ ```
+ nix-shell -p mkpasswd --run 'mkpasswd -s'
+ ```
+
+ :::{note}
+ This is a convenience option, when your threat model allows
+ storing hashed secrets in the world-readable Nix store.
+
+ Passing the hash through
+ {option}`mailserver.accounts.<name>.hashedPasswordFile`
+ allows relying on filesystem discretionary access control as
+ another security boundary.
+ :::
+ '';
+ };
+
+ hashedPasswordFile = lib.mkOption {
+ type = lib.types.nullOr lib.types.path;
+ default = null;
+ example = "/run/keys/user1-pw-hash";
+ description = ''
+ The hashed login password for this account read from a file.
+
+ Use `mkpasswd to create password hashes:
+ ```
+ nix-shell -p mkpasswd --run 'mkpasswd -s'
+ ```
+ '';
+ };
+
+ passwordFile = lib.mkOption {
+ type = with lib.types;
+ nullOr (pathWith {
+ inStore = false;
+ });
+ default = null;
+ example = "/run/keys/user1-pw";
+ description = ''
+ The plaintext login password for this account read from a file.
+
+ :::{note}
+ The password is hashed before it is passed on to Dovecot.
+ :::
+ '';
+ };
+
+ aliases = lib.mkOption {
+ type = with lib.types; listOf types.str;
+ example = [
+ "abuse@example.com"
+ "postmaster@example.com"
+ ];
+ default = [];
+ description = ''
+ List of additional mail addresses (aliases) that get routed to this account.
+
+ :::{admonition} Catch-all with sending permissions
+ :class: tip
+ Configure `@example.com` to create a catch-all for this domain
+ that also allows sending from all addresses.
+ :::
+ '';
+ };
+
+ aliasesRegexp = lib.mkOption {
+ type = with lib.types; listOf types.str;
+ example = [''/^tom\..*@domain\.com$/''];
+ default = [];
+ description = ''
+ Same as {option}`mailserver.accounts.<name>.aliases` but
+ using PCRE (Perl compatible regex).
+ '';
+ };
+
+ catchAll = lib.mkOption {
+ type = with lib.types; listOf (enum cfg.domains);
+ example = [
+ "example.com"
+ "example2.com"
+ ];
+ default = [];
+ description = ''
+ For which domains should this account act as a catch all?
+
+ :::{warning}
+ Does not allow sending from all addresses of these domains.
+ Use {option}`mailserver.accounts.<name>.aliases` if that
+ is required.
+ :::
+ '';
+ };
+
+ quota = lib.mkOption {
+ type = with lib.types; nullOr types.str;
+ default = null;
+ example = "2G";
+ description = ''
+ The quota limit for this user.
+
+ The value is must use a size format like `500M`, `2G`, `10G`.
+
+ If unset, will fall back to {option}`mailserver.quota.defaults.perUser` if set.
+ '';
+ };
+
+ sieveScript = lib.mkOption {
+ type = with lib.types; nullOr lines;
+ default = null;
+ example = ''
+ require ["fileinto", "mailbox"];
+
+ if address :is "from" "gitlab@mg.gitlab.com" {
+ fileinto :create "GitLab";
+ stop;
+ }
+
+ # This must be the last rule, it will check if list-id is set, and
+ # file the message into the Lists folder for further investigation
+ elsif header :matches "list-id" "<?*>" {
+ fileinto :create "Lists";
+ stop;
+ }
+ '';
+ description = ''
+ Per-user sieve script.
+ '';
+ };
+
+ sendOnly = lib.mkOption {
+ type = lib.types.bool;
+ default = false;
+ description = ''
+ Specifies if the account should be a send-only account.
+
+ Emails sent to send-only accounts will
+ be rejected with the reason configured in
+ {option}`mailserver.accounts.<name>.sendOnlyRejectMessage`.
+ '';
+ };
+
+ sendOnlyRejectMessage = lib.mkOption {
+ type = lib.types.str;
+ default = "This account cannot receive emails.";
+ description = ''
+ The message returned to the sender for a send-only account.
+
+ See {option}`mailserver.accounts.<name>.sendOnly`.
+ '';
+ };
+ };
+ }
+ )
+ );
+ example = lib.literalExpression ''
+ {
+ user1 = {
+ # This password hash leaks into the Nix store
+ hashedPassword = "$y$j9T$y6eZ1o.IvVNfdGMAsUEvh1$6K/llP52uw2iDh4iSwtAn54/JYy7FzCcoCHmjmx00H5";
+ };
+ user2 = {
+ # Hashed password passed as a file
+ hashedPasswordFile = "/run/keys/user2-pw-hash";
+ };
+ user3 = {
+ # Plaintext password file
+ passwordFile = "/run/keys/user3-pw";
+ };
+ }
+ '';
+ description = ''
+ Attribute set of mail accounts.
+
+ Each entry defines a mailbox and login credentials, where the attribute
+ name is used as the login username and optionally routed mail address.
+
+ Use `mkpasswd` to generate password hashes.
+ '';
+ default = {};
+ };
};
config = lib.mkIf cfg.enable {
@@ -59,9 +265,11 @@ in {
];
vhack.nginx.enable = true;
- security.acme.certs = {
+
+ services.nginx.virtualHosts = {
"${cfg.fqdn}" = {
- domain = cfg.fqdn;
+ enableACME = true;
+ forceSSL = true;
};
};
@@ -71,12 +279,6 @@ in {
stateVersion = 5;
- aliases = {
- "abuse@vhack.eu" = all_admins;
- "postmaster@vhack.eu" = all_admins;
- "admin@vhack.eu" = all_admins;
- };
-
storage = {
directoryLayout = "fs";
path = "/var/lib/mail/vmail";
@@ -97,74 +299,15 @@ in {
# Reference the existing ACME configuration created by nginx
x509.useACMEHost = cfg.fqdn;
- domains = [
- "vhack.eu"
-
- "s-schoeffel.de"
- "b-peetz.de"
-
- "sils.li"
- "nightingale.sils.li"
- "sils.sils.li"
-
- "jaki.li"
- ];
-
- accounts = {
- "sils@vhack.eu" = {
- hashedPassword = "$2b$05$RW/Svgk7iGxvP5W7ZwUZ1e.a3fj4fteevb2MtfFYYD0d1DQ17y9Fm";
- };
- "soispha@vhack.eu" = {
- hashedPassword = "$2b$05$XX36sJuHNbTFvi8DFldscOeQBHahluSkiUqD9QGzQaET7NJusSuQW";
- };
-
- "soispha@b-peetz.de" = {
- hashedPassword = "$y$j9T$asnEgvMxJrbeabfyp1AOe/$0dJ0/Rta57V8nHCLVGOHrXsXeEhBCaKx/HTuPHXZj04";
- };
- "benedikt.peetz@b-peetz.de" = {
- hashedPassword = "$2b$05$MfET8utot2OolPZNASqoDe4VXNoG2chnEWhdfQ2E92mit0TvI2gBy";
- aliases = ["@b-peetz.de"];
- };
- "silas.schoeffel@s-schoeffel.de" = {
- hashedPassword = "$2b$05$Qb8rl7ncpCcTbsSdsduJBuOITp8RTD6sfOTjuxJsVtD9vjAYY9n8e";
- aliases = ["@s-schoeffel.de"];
- };
-
- "nightingale@vhack.eu" = {
- hashedPassword = "$2b$05$nDKVVq1EktKXWqGFhnOLP.plLovXFyvWSuptK9GIkxA5DScKFx6YS";
- aliases = [
- "@nightingale.sils.li"
- ];
- };
- "sils@sils.li" = {
- hashedPassword = "$2b$05$Ebzh2ZhuWkz1p4tqJ172IejNZg10FtCxPDY4k6umYrpirXg7ezIRq";
- aliases = [
- "@sils.sils.li"
- "@sils.li"
- ];
- };
- "mail@jaki.li" = {
- hashedPassword = "$y$j9T$jaG/lkAOfYXUNiJt11DoE.$ZKTeev6b5TCBEXZzNLH12hOmy5mL.Fitp0V6saWXR73";
- aliases = [
- "postmaster@jaki.li"
- "abuse@jaki.li"
- "admin@jaki.li"
- ];
- };
-
- # Mail-Account used by hosted software
- "mastodon@vhack.eu" = {
- hashedPassword = "$2b$05$pSby3x2p3cHg0FyAE8IiJ.nYUqtAIR10JA8HNpHwMAiLXqc.ltSK.";
- };
- "peertube@vhack.eu" = {
- hashedPassword = "$y$j9T$hyWQ8Awd2Xrc6qsK.2hwE1$LxACfaeW.yHGbkQL95dWtID9.zXL/aMwT6lp.yU/0g0";
- };
- };
+ inherit (cfg) domains accounts;
};
users = {
users = {
- knot-resolver.uid = config.vhack.constants.ids.uids.knot-resolver;
+ knot-resolver = {
+ uid = config.vhack.constants.ids.uids.knot-resolver;
+ group = "knot-resolver";
+ };
redis-rspamd.uid = config.vhack.constants.ids.uids.redis-rspamd;
rspamd.uid = config.vhack.constants.ids.uids.rspamd;
postfix-tlspol.uid = config.vhack.constants.ids.uids.postfix-tlspol;
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-22 06:22:40 +0000