[Exim] getting exim to scan recursively through subdirectori…

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Hi All --

Right now, I have the following router:

archalias:
driver = redirect
file = /var/mail/alias/$local_part
no_expn
check_ancestor
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply

Which works great. However, for organizational and permissioning purposes,
I'd like to have arbitrarily-named sub-directories. Something like:

file = /var/mail/alias/*/$local_part

Which doesn't work, but illustrates what I'm after.

This is the last router in the list and we're not talking about hundreds of
files, so I can afford to spend some extra CPU cycles searching for a
match. Is there any way to make exim do this?

Thanks.

--kurt
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