nixos-mailserver/mail-server/systemd.nix

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# nixos-mailserver: a simple mail server
# Copyright (C) 2016-2017 Robin Raymond
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>
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{ config, pkgs, lib, ... }:
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let
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cfg = config.mailserver;
create_certificate = if cfg.certificateScheme == 2 then
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builtins.readFile ./script/create_certificate
else "";
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dkim_key = "${cfg.dkimKeyDirectory}/${cfg.dkimSelector}.private";
dkim_txt = "${cfg.dkimKeyDirectory}/${cfg.dkimSelector}.txt";
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create_dkim_cert = builtins.readFile ./script/create_dkim_certificate;
in
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{
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config = with cfg; lib.mkIf enable {
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# Make sure postfix gets started first, so that the certificates are in place
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systemd.services.dovecot2.after = [ "postfix.service" ];
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# Create certificates and maildir folder
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systemd.services.postfix = {
preStart =
''
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# Create mail directory and set permissions. See
# <http://wiki2.dovecot.org/SharedMailboxes/Permissions>.
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mkdir -p "${mailDirectory}"
chgrp "${vmailGroupName}" "${mailDirectory}"
chmod 02770 "${mailDirectory}"
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${create_certificate}
'';
};
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# Create dkim certificates
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systemd.services.rmilter = {
preStart =
''
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${create_dkim_cert}
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'';
};
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};
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}