r1 router:
address_data = 
address_test
cannot_route_message = 
no_caseful_local_part
no_check_local_user
condition = 
debug_print = 
no_disable_logging
dnssec_request_domains = 
dnssec_require_domains = 
domains = 
driver = accept
no_dsn_lasthop
errors_to = 
expn
no_fail_verify_recipient
no_fail_verify_sender
fallback_hosts = 
group = 
headers_add = 
headers_remove = 
ignore_target_hosts = 
no_initgroups
local_part_prefix = 
no_local_part_prefix_optional
local_part_suffix = 
no_local_part_suffix_optional
local_parts = 
log_as_local
more
no_pass_on_timeout
pass_router = 
redirect_router = 
require_files = 
no_retry_use_local_part
router_home_directory = 
self = freeze
senders = 
transport = t1
transport_current_directory = 
transport_home_directory = 
no_unseen
user = 
no_verify_only
verify_recipient
verify_sender