[Exim] Filter 'mail' problem

Nobody has responded to my emails concerning the use of 'mail' in a
filter. Forgive my rephrasing and trying a third time.

I am trying to use 'mail' as part of a filter. The 'to' address is not
on the host running the filter.

The Exim error is "Attempt local delivery with non-local transport".

message_filter_reply_transport points to:

remote_smtp:
driver = smtp
hosts = 10.0.0.24
hosts_override

Thanks for any help
Rory
--
Rory Campbell-Lange
<rory@???>
<www.campbell-lange.net>