dovecot_lmtp_local_system:
  debug_print = "R: dovecot_lmtp_local_system for $local_part@$domain"
  driver = accept
  domains = +local_domains
  check_local_user
  local_part_prefix = local+
  local_parts = ! root
  transport = dovecot_lmtp
  cannot_route_message = Unknown user
