nixos-mailserver/mail-server/networking.nix

#  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/>

{ domain, host_prefix, enable_imap, enable_pop3 }:

{
  hostName = "${host_prefix}.${domain}";

  firewall = {
    allowedTCPPorts = [ 25 587 ]
      ++ (if enable_imap then [ 143 ] else [])
      ++ (if enable_pop3 then [ 110 ] else []);
  };
}