commit f6961de63743f850ce423ccb9748e1d5442a8594 · pyrox.dev/nixpkgs

nixos/modules/module-list.nix

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         ./services/mail/rss2email.nix

     

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         ./services/mail/schleuder.nix

     

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         ./services/mail/spamassassin.nix

     

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         ./services/mail/stalwart-mail.nix

     

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         ./services/mail/sympa.nix

     

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         ./services/mail/zeyple.nix

     

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         ./services/matrix/appservice-discord.nix

+106

nixos/modules/services/mail/stalwart-mail.nix

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       { config, lib, pkgs, ... }:

     

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       with lib;

     

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       let

     

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         cfg = config.services.stalwart-mail;

     

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         configFormat = pkgs.formats.toml { };

     

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         configFile = configFormat.generate "stalwart-mail.toml" cfg.settings;

     

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         dataDir = "/var/lib/stalwart-mail";

     

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       in {

     

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         options.services.stalwart-mail = {

     

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           enable = mkEnableOption (mdDoc "the Stalwart all-in-one email server");

     

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           package = mkPackageOptionMD pkgs "stalwart-mail" { };

     

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           settings = mkOption {

     

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             inherit (configFormat) type;

     

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             default = { };

     

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             description = mdDoc ''

     

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               Configuration options for the Stalwart email server.

     

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               See <https://stalw.art/docs/> for available options.

     

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               By default, the module is configured to store everything locally.

     

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             '';

     

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           };

     

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         };

     

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         config = mkIf cfg.enable {

     

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           # Default config: all local

     

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           services.stalwart-mail.settings = {

     

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             global.tracing.method = mkDefault "stdout";

     

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             global.tracing.level = mkDefault "info";

     

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             queue.path = mkDefault "${dataDir}/queue";

     

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             report.path = mkDefault "${dataDir}/reports";

     

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             store.db.path = mkDefault "${dataDir}/data/index.sqlite3";

     

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             store.blob.type = mkDefault "local";

     

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             store.blob.local.path = mkDefault "${dataDir}/data/blobs";

     

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             resolver.type = mkDefault "system";

     

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           };

     

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           systemd.services.stalwart-mail = {

     

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             wantedBy = [ "multi-user.target" ];

     

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             after = [ "local-fs.target" "network.target" ];

     

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             preStart = ''

     

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               mkdir -p ${dataDir}/{queue,reports,data/blobs}

     

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             '';

     

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             serviceConfig = {

     

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               ExecStart =

     

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                 "${cfg.package}/bin/stalwart-mail --config=${configFile}";

     

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               # Base from template resources/systemd/stalwart-mail.service

     

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               Type = "simple";

     

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               LimitNOFILE = 65536;

     

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               KillMode = "process";

     

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               KillSignal = "SIGINT";

     

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               Restart = "on-failure";

     

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               RestartSec = 5;

     

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               StandardOutput = "syslog";

     

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               StandardError = "syslog";

     

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               SyslogIdentifier = "stalwart-mail";

     

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               DynamicUser = true;

     

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               User = "stalwart-mail";

     

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               StateDirectory = "stalwart-mail";

     

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               # Bind standard privileged ports

     

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               AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];

     

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               CapabilityBoundingSet = [ "CAP_NET_BIND_SERVICE" ];

     

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               # Hardening

     

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               DeviceAllow = [ "" ];

     

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               LockPersonality = true;

     

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               MemoryDenyWriteExecute = true;

     

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               PrivateDevices = true;

     

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               PrivateUsers = false;  # incompatible with CAP_NET_BIND_SERVICE

     

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               ProcSubset = "pid";

     

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               PrivateTmp = true;

     

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               ProtectClock = true;

     

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               ProtectControlGroups = true;

     

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               ProtectHome = true;

     

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               ProtectHostname = true;

     

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               ProtectKernelLogs = true;

     

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               ProtectKernelModules = true;

     

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               ProtectKernelTunables = true;

     

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               ProtectProc = "invisible";

     

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               ProtectSystem = "strict";

     

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               RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];

     

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               RestrictNamespaces = true;

     

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               RestrictRealtime = true;

     

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               RestrictSUIDSGID = true;

     

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               SystemCallArchitectures = "native";

     

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               SystemCallFilter = [ "@system-service" "~@privileged" ];

     

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               UMask = "0077";

     

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             };

     

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           };

     

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           # Make admin commands available in the shell

     

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           environment.systemPackages = [ cfg.package ];

     

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         };

     

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         meta = {

     

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           maintainers = with maintainers; [ happysalada pacien ];

     

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         };

     

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       }