Exim version x.yz ....
configuration file is TESTSUITE/test-config
admin user
-DSN: smart propagating DSN
-DSN: forward propagating DSN
-DSN: localuser propagating DSN
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
routing yes@myhost.test.ex
--------> smart router <--------
expanded file: TESTSUITE/aux-fixed/0084.yes
stat() yielded 0
calling forward router
-rda_interpret (file): TESTSUITE/aux-fixed/0084.$local_part
-expanded: TESTSUITE/aux-fixed/0084.yes
-ssss bytes read from TESTSUITE/aux-fixed/0084.yes
+rda_interpret (file): 'TESTSUITE/aux-fixed/0084.$local_part'
+expanded: 'TESTSUITE/aux-fixed/0084.yes'
+ssss (tainted) bytes read from TESTSUITE/aux-fixed/0084.yes
file is not a filter file
parse_forward_list: userx@test.ex
file check: ! TESTSUITE/aux-fixed/0084.$local_part
expanded file: TESTSUITE/aux-fixed/0084.no
stat() yielded -1
-errno = 2
+errno = EEE
calling smart router
smart router called for no@myhost.test.ex
domain = myhost.test.ex