cryodev/modules/nixos/mailserver/default.nix
2026-03-06 08:31:13 +01:00

104 lines
2.5 KiB
Nix

{
inputs,
config,
lib,
pkgs,
...
}:
let
cfg = config.mailserver;
domain = config.networking.domain;
fqdn = "${cfg.subdomain}.${domain}";
inherit (lib)
mapAttrs'
mkDefault
mkIf
mkOption
nameValuePair
types
;
in
{
imports = [ inputs.nixos-mailserver.nixosModules.mailserver ];
options.mailserver = {
subdomain = mkOption {
type = types.str;
default = "mail";
description = "Subdomain for rDNS";
};
accounts = mkOption {
type = types.attrsOf (
types.submodule {
options = {
aliases = mkOption {
type = types.listOf types.str;
default = [ ];
description = "A list of aliases of this account. `@domain` will be appended automatically.";
};
sendOnly = mkOption {
type = types.bool;
default = false;
description = "Specifies if the account should be a send-only account.";
};
};
}
);
default = { };
description = ''
This options wraps `loginAccounts`.
`loginAccounts.<attr-name>.name` will be automatically set to `<attr-name>@<domain>`.
'';
};
};
config = mkIf cfg.enable {
assertions = [
{
assertion = cfg.subdomain != "";
message = "cryodev/nixos/mailserver: config.mailserver.subdomain cannot be empty.";
}
];
mailserver = {
fqdn = mkDefault fqdn;
domains = mkDefault [ domain ];
certificateScheme = mkDefault "acme-nginx";
stateVersion = mkDefault 1;
loginAccounts = mapAttrs' (
user: accConf:
nameValuePair "${user}@${domain}" {
name = "${user}@${domain}";
aliases = map (alias: "${alias}@${domain}") (accConf.aliases or [ ]);
sendOnly = accConf.sendOnly;
quota = mkDefault "5G";
hashedPasswordFile = config.sops.secrets."mailserver/accounts/${user}".path;
}
) cfg.accounts;
};
security.acme = {
acceptTerms = true;
defaults.email = mkDefault "postmaster@cryodev.xyz";
defaults.webroot = mkDefault "/var/lib/acme/acme-challenge";
};
environment.systemPackages = [ pkgs.mailutils ];
sops = {
secrets = mapAttrs' (
user: _config:
nameValuePair "mailserver/accounts/${user}" {
restartUnits = [
"postfix.service"
"dovecot.service"
];
}
) cfg.accounts;
};
};
}