244 lines
7.7 KiB
Nix
244 lines
7.7 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
{
|
|
|
|
options = {
|
|
|
|
services.nullmailer = {
|
|
enable = mkOption {
|
|
type = types.bool;
|
|
default = false;
|
|
description = "Whether to enable nullmailer daemon.";
|
|
};
|
|
|
|
user = mkOption {
|
|
type = types.string;
|
|
default = "nullmailer";
|
|
description = ''
|
|
User to use to run nullmailer-send.
|
|
'';
|
|
};
|
|
|
|
group = mkOption {
|
|
type = types.string;
|
|
default = "nullmailer";
|
|
description = ''
|
|
Group to use to run nullmailer-send.
|
|
'';
|
|
};
|
|
|
|
setSendmail = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = "Whether to set the system sendmail to nullmailer's.";
|
|
};
|
|
|
|
remotesFile = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
Path to the <code>remotes</code> control file. This file contains a
|
|
list of remote servers to which to send each message.
|
|
|
|
See <code>man 8 nullmailer-send</code> for syntax and available
|
|
options.
|
|
'';
|
|
};
|
|
|
|
config = {
|
|
adminaddr = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
If set, all recipients to users at either "localhost" (the literal string)
|
|
or the canonical host name (from the me control attribute) are remapped to this address.
|
|
This is provided to allow local daemons to be able to send email to
|
|
"somebody@localhost" and have it go somewhere sensible instead of being bounced
|
|
by your relay host. To send to multiple addresses,
|
|
put them all on one line separated by a comma.
|
|
'';
|
|
};
|
|
|
|
allmailfrom = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
If set, content will override the envelope sender on all messages.
|
|
'';
|
|
};
|
|
|
|
defaultdomain = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The content of this attribute is appended to any host name that
|
|
does not contain a period (except localhost), including defaulthost
|
|
and idhost. Defaults to the value of the me attribute, if it exists,
|
|
otherwise the literal name defauldomain.
|
|
'';
|
|
};
|
|
|
|
defaulthost = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The content of this attribute is appended to any address that
|
|
is missing a host name. Defaults to the value of the me control
|
|
attribute, if it exists, otherwise the literal name defaulthost.
|
|
'';
|
|
};
|
|
|
|
doublebounceto = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
If the original sender was empty (the original message was a
|
|
delivery status or disposition notification), the double bounce
|
|
is sent to the address in this attribute.
|
|
'';
|
|
};
|
|
|
|
helohost = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
Sets the environment variable $HELOHOST which is used by the
|
|
SMTP protocol module to set the parameter given to the HELO command.
|
|
Defaults to the value of the me configuration attribute.
|
|
'';
|
|
};
|
|
|
|
idhost = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The content of this attribute is used when building the message-id
|
|
string for the message. Defaults to the canonicalized value of defaulthost.
|
|
'';
|
|
};
|
|
|
|
maxpause = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The maximum time to pause between successive queue runs, in seconds.
|
|
Defaults to 24 hours (86400).
|
|
'';
|
|
};
|
|
|
|
me = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The fully-qualifiled host name of the computer running nullmailer.
|
|
Defaults to the literal name me.
|
|
'';
|
|
};
|
|
|
|
pausetime = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The minimum time to pause between successive queue runs when there
|
|
are messages in the queue, in seconds. Defaults to 1 minute (60).
|
|
Each time this timeout is reached, the timeout is doubled to a
|
|
maximum of maxpause. After new messages are injected, the timeout
|
|
is reset. If this is set to 0, nullmailer-send will exit
|
|
immediately after going through the queue once (one-shot mode).
|
|
'';
|
|
};
|
|
|
|
remotes = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
A list of remote servers to which to send each message. Each line
|
|
contains a remote host name or address followed by an optional
|
|
protocol string, separated by white space.
|
|
|
|
See <code>man 8 nullmailer-send</code> for syntax and available
|
|
options.
|
|
|
|
WARNING: This is stored world-readable in the nix store. If you need
|
|
to specify any secret credentials here, consider using the
|
|
<code>remotesFile</code> option instead.
|
|
'';
|
|
};
|
|
|
|
sendtimeout = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
description = ''
|
|
The time to wait for a remote module listed above to complete sending
|
|
a message before killing it and trying again, in seconds.
|
|
Defaults to 1 hour (3600). If this is set to 0, nullmailer-send
|
|
will wait forever for messages to complete sending.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
config = let
|
|
cfg = config.services.nullmailer;
|
|
in mkIf cfg.enable {
|
|
|
|
assertions = [
|
|
{ assertion = cfg.config.remotes == null || cfg.remotesFile == null;
|
|
message = "Only one of `remotesFile` or `config.remotes` may be used at a time.";
|
|
}
|
|
];
|
|
|
|
environment = {
|
|
systemPackages = [ pkgs.nullmailer ];
|
|
etc = let
|
|
validAttrs = filterAttrs (name: value: value != null) cfg.config;
|
|
in
|
|
(foldl' (as: name: as // { "nullmailer/${name}".text = validAttrs.${name}; }) {} (attrNames validAttrs))
|
|
// optionalAttrs (cfg.remotesFile != null) { "nullmailer/remotes".source = cfg.remotesFile; };
|
|
};
|
|
|
|
users = {
|
|
users = singleton {
|
|
name = cfg.user;
|
|
description = "Nullmailer relay-only mta user";
|
|
group = cfg.group;
|
|
};
|
|
|
|
groups = singleton {
|
|
name = cfg.group;
|
|
};
|
|
};
|
|
|
|
systemd.services.nullmailer = {
|
|
description = "nullmailer";
|
|
wantedBy = [ "multi-user.target" ];
|
|
after = [ "network.target" ];
|
|
|
|
preStart = ''
|
|
mkdir -p /var/spool/nullmailer/{queue,tmp}
|
|
rm -f /var/spool/nullmailer/trigger && mkfifo -m 660 /var/spool/nullmailer/trigger
|
|
chown ${cfg.user} /var/spool/nullmailer/*
|
|
'';
|
|
|
|
serviceConfig = {
|
|
User = cfg.user;
|
|
Group = cfg.group;
|
|
PermissionsStartOnly=true;
|
|
ExecStart = "${pkgs.nullmailer}/bin/nullmailer-send";
|
|
Restart = "always";
|
|
};
|
|
};
|
|
|
|
services.mail.sendmailSetuidWrapper = mkIf cfg.setSendmail {
|
|
program = "sendmail";
|
|
source = "${pkgs.nullmailer}/bin/sendmail";
|
|
owner = cfg.user;
|
|
group = cfg.group;
|
|
setuid = true;
|
|
setgid = true;
|
|
};
|
|
};
|
|
}
|