--- /dev/null
+# Allow insecure tainted data
+exim -DALLOW_TAINTED=no -f hans@example.com -be
+${lookup{$sender_address_local_part}lsearch{DIR/aux-fixed/0990/$sender_address_domain}{yes}{no}}
+****
+exim -DALLOW_TAINTED=yes -f hans@example.com -be
+${lookup{$sender_address_local_part}lsearch{DIR/aux-fixed/0990/$sender_address_domain}{yes}{no}}
+****
--- /dev/null
+1999-03-02 09:44:33 Tainted filename for search 'TESTSUITE/aux-fixed/0990/example.com'
+1999-03-02 09:44:33 Warning: Tainted filename for search 'TESTSUITE/aux-fixed/0990/example.com'
+1999-03-02 09:44:33 Warning: Tainted filename 'TESTSUITE/aux-fixed/0990/example.com'