e82cbd6f35
LoadCredential= will set the owner of $CREDENTIALS_DIRECTORY and the credentials to User=. As currently Exim is currently has to be run as root in order to use the standard SMTP port and for local deliveries[1], set User=exim, but run all processes as root. [1]: https://www.exim.org/exim-html-current/doc/html/spec_html/ch-security_considerations.html#SECID270
87 lines
2.4 KiB
Nix
87 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }: with import <stockholm/lib>; let
|
|
cfg = config.krebs.exim;
|
|
in {
|
|
options.krebs.exim = {
|
|
enable = mkEnableOption "krebs.exim";
|
|
config = mkOption {
|
|
type = types.str;
|
|
default = "";
|
|
description = ''
|
|
Verbatim Exim configuration. This should not contain exim_user,
|
|
exim_group, exim_path, or spool_directory.
|
|
'';
|
|
};
|
|
user = mkOption {
|
|
type = types.user;
|
|
default = {
|
|
name = "exim";
|
|
home = "/var/spool/exim";
|
|
};
|
|
description = ''
|
|
User to use when no root privileges are required.
|
|
In particular, this applies when receiving messages and when doing
|
|
remote deliveries. (Local deliveries run as various non-root users,
|
|
typically as the owner of a local mailbox.) Specifying this value
|
|
as root is not supported.
|
|
'';
|
|
};
|
|
group = mkOption {
|
|
type = types.group;
|
|
default = {
|
|
name = "exim";
|
|
};
|
|
description = ''
|
|
Group to use when no root privileges are required.
|
|
'';
|
|
};
|
|
};
|
|
config = lib.mkIf cfg.enable {
|
|
environment = {
|
|
etc."exim.conf".source = pkgs.writeEximConfig "exim.conf" /* exim */ ''
|
|
exim_user = ${cfg.user.name}
|
|
exim_group = ${cfg.group.name}
|
|
exim_path = /run/wrappers/bin/exim
|
|
spool_directory = ${cfg.user.home}
|
|
|
|
# https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html
|
|
chunking_advertise_hosts =
|
|
|
|
${cfg.config}
|
|
'';
|
|
systemPackages = [ pkgs.exim ];
|
|
};
|
|
krebs.setuid = {
|
|
exim = {
|
|
filename = "${pkgs.exim}/bin/exim";
|
|
mode = "4111";
|
|
};
|
|
sendmail = {
|
|
filename = "${pkgs.exim}/bin/exim";
|
|
mode = "4111";
|
|
};
|
|
};
|
|
systemd.services.exim = {
|
|
restartTriggers = [
|
|
config.environment.etc."exim.conf".source
|
|
];
|
|
serviceConfig = {
|
|
ExecStart = "+${pkgs.exim}/bin/exim -bdf -q30m";
|
|
ExecReload = "+${pkgs.coreutils}/bin/kill -HUP $MAINPID";
|
|
User = cfg.user.name;
|
|
};
|
|
wantedBy = [ "multi-user.target" ];
|
|
};
|
|
users = {
|
|
groups.${cfg.group.name} = {
|
|
inherit (cfg.group) name gid;
|
|
};
|
|
users.${cfg.user.name} = {
|
|
inherit (cfg.user) home name uid;
|
|
createHome = true;
|
|
group = cfg.group.name;
|
|
isSystemUser = true;
|
|
};
|
|
};
|
|
};
|
|
}
|