{ }: {
  mpd = 6600; # default
  mpd-opus = 8012;
  mpd-flac = 8013;

  quassel = 4242; # default

  misskey = 3020;
  misskey-redis = 3021;

  invidious = 3000;

  piped-backend = 3012;
  piped-proxy = 3013;

  smtp = 25;
  submission = 587;
  submission_ssl = 465;
  imap = 143;
  imap_ssl = 993;
  sieve = 4190;

  rspamd-redis = 6380;
}