nixos-config/modules/mailserver.nix

{ pkgs, config, lib, inputs, ... }:
let
  module = toString inputs.simple-nixos-mailserver;
  readCommandResult = command:
    builtins.readFile (pkgs.runCommand "cmd" { preferLocalBuild = true; }
      "echo -n $(${command}) > $out");
  hashedPassword = readCommandResult
    "${pkgs.mkpasswd}/bin/mkpasswd -m sha-512 '${config.secrets.mail.password}'";
in {
  imports = [ module ];
  services.postfix = {
    dnsBlacklists = [
      "all.s5h.net"
      "b.barracudacentral.org"
      "bl.spamcop.net"
      "blacklist.woody.ch"
      # "bogons.cymru.com"
      # "cbl.abuseat.org"
      # "combined.abuse.ch"
      # "db.wpbl.info"
      # "dnsbl-1.uceprotect.net"
      # "dnsbl-2.uceprotect.net"
      # "dnsbl-3.uceprotect.net"
      # "dnsbl.anticaptcha.net"
      # "dnsbl.dronebl.org"
      # "dnsbl.inps.de"
      # "dnsbl.sorbs.net"
      # "dnsbl.spfbl.net"
      # "drone.abuse.ch"
      # "duinv.aupads.org"
      # "dul.dnsbl.sorbs.net"
      # "dyna.spamrats.com"
      # "dynip.rothen.com"
      # "http.dnsbl.sorbs.net"
      # "ips.backscatterer.org"
      # "ix.dnsbl.manitu.net"
      # "korea.services.net"
      # "misc.dnsbl.sorbs.net"
      # "noptr.spamrats.com"
      # "orvedb.aupads.org"
      # "pbl.spamhaus.org"
      # "proxy.bl.gweep.ca"
      # "psbl.surriel.com"
      # "relays.bl.gweep.ca"
      # "relays.nether.net"
      # "sbl.spamhaus.org"
      # "singular.ttk.pte.hu"
      # "smtp.dnsbl.sorbs.net"
      # "socks.dnsbl.sorbs.net"
      # "spam.abuse.ch"
      # "spam.dnsbl.anonmails.de"
      # "spam.dnsbl.sorbs.net"
      # "spam.spamrats.com"
      # "spambot.bls.digibase.ca"
      # "spamrbl.imp.ch"
      # "spamsources.fabel.dk"
      # "ubl.lashback.com"
      # "ubl.unsubscore.com"
      # "virus.rbl.jp"
      # "web.dnsbl.sorbs.net"
      # "wormrbl.imp.ch"
      # "xbl.spamhaus.org"
      # "z.mailspike.net"
      # "zen.spamhaus.org"
      # "zombie.dnsbl.sorbs.net"
    ];
    dnsBlacklistOverrides = ''
      balsoft.ru OK
      ${
        builtins.concatStringsSep " OK \n" (builtins.attrNames config.devices)
      } OK
      192.168.0.0/16 OK
    '';
  };
  mailserver = lib.mkIf (! isNull config.secrets.mail) {
    enable = true;
    fqdn = config.secrets.mail.host;
    domains = [ config.secrets.mail.host ];
    loginAccounts = {
      "balsoft@balsoft.ru" = {
        aliases =
          [ "balsoft" "admin@balsoft.ru" "admin" "root@balsoft.ru" "root" ];
        inherit hashedPassword;
      };
    };
    localDnsResolver = false;
    certificateScheme = 3;
    enableImap = true;
    enableImapSsl = true;
    virusScanning = false;
  };
}