[exim] redirect router that calls a script that generates a …

Hi,

I would like to build a python script whose output (a stream with exim
filter commands) is piped to a redirect router.
Maybe in a more self explanatory way, each time the router is reached, it
launches the script that returns the .forward file to it.
Is that possible to set this or do I really need to input a file?

Thanks,

Fab

--
## subscription configuration (requires account):
## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/
## unsubscribe (doesn't require an account):
## exim-users-unsubscribe@???
## Exim details at http://www.exim.org/
## Please use the Wiki with this list - http://wiki.exim.org/