[Exim] Transport configuration question.

Hello,

I want who save the mail when the user doesn't exit and also return an
error. Here is the configuration I have. The first director delivers
the mail, but when the user doesn't exist it generate the error and the
second director is never hit.

Dose someone have any idea on how I can do that.


local_query:
domains = +local_routed
driver = queryprogram
transport = remote_smtp_filter
command = /usr/local/etc/exim/exim_query.py -l ${local_part} -d
${domain}
command_user = mailnull

local_backup_router:
driver = accept
domains = +local_routed
unseen = yes
transport = copy_transport

Thanks Fred