test/log/4126

   1 1999-03-02 09:44:33 10HmaX-000000005vi-0000 <= CALLER@myhost.test.ex U=CALLER P=local S=sss
   2 1999-03-02 09:44:33 10HmaX-000000005vi-0000 original recipients ignored (system filter)
   3 1999-03-02 09:44:33 10HmaX-000000005vi-0000 == |/source/exim4/AutoTest/non-exist <system-filter> routing defer (-1): system_filter_pipe_transport is unset