/etc/exim4/conf.d/router/900_exim4-config_local_user is in exim4-config 4.82-3ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | ### router/900_exim4-config_local_user
#################################
# This router matches local user mailboxes. If the router fails, the error
# message is "Unknown user".
local_user:
debug_print = "R: local_user for $local_part@$domain"
driver = accept
domains = +local_domains
check_local_user
local_parts = ! root
transport = LOCAL_DELIVERY
cannot_route_message = Unknown user
|