nixpkgs/nixos/modules/services/mail/opensmtpd.nix

83 lines
1.9 KiB
Nix

{ pkgs, config, ... }:
with pkgs;
with pkgs.lib;
let
cfg = config.services.opensmtpd;
conf = writeText "smtpd.conf" cfg.serverConfiguration;
args = concatStringsSep " " cfg.extraServerArgs;
in {
###### interface
options = {
services.opensmtpd = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable the OpenSMTPD server.";
};
extraServerArgs = mkOption {
type = types.listOf types.string;
default = [];
example = [ "-v" "-P mta" ];
description = ''
Extra command line arguments provided when the smtpd process
is started.
'';
};
serverConfiguration = mkOption {
type = types.string;
default = "";
example = ''
listen on lo
accept for any deliver to lmtp localhost:24
'';
description = ''
The contents of the smtpd.conf configuration file. See the
OpenSMTPD documentation for syntax information. If this option
is left empty, the OpenSMTPD server will not start.
'';
};
};
};
###### implementation
config = mkIf config.services.opensmtpd.enable {
users.extraGroups = {
smtpd.gid = config.ids.gids.smtpd;
smtpq.gid = config.ids.gids.smtpq;
};
users.extraUsers = {
smtpd = {
description = "OpenSMTPD process user";
uid = config.ids.uids.smtpd;
group = "smtpd";
};
smtpq = {
description = "OpenSMTPD queue user";
uid = config.ids.uids.smtpq;
group = "smtpq";
};
};
systemd.services.opensmtpd = {
wantedBy = [ "multi-user.target" ];
wants = [ "network.target" ];
after = [ "network.target" ];
preStart = "mkdir -p /var/spool";
serviceConfig.ExecStart = "${opensmtpd}/sbin/smtpd -d -f ${conf} ${args}";
};
};
}