[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

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