40.8 Per-address filtering
In contrast to the system filter, which is run just once per message for each
delivery attempt, it is also possible to set up a system-wide filtering
operation that runs once for each recipient address. In this case, variables
such as $local_part and $domain can be used, and indeed, the choice of filter
file could be made dependent on them. This is an example of a router which
implements such a filter:
central_filter:
driver = redirect
domains = +local_domains
file = /central/filters/$local_part
no_verify
allow_filter
allow_freeze
I added this to my conf and got in the panic log:
2003-12-20 19:17:19 Exim configuration error for central_filter router:
"user" or "check_local_user" must be set with "allow_filter"
Giuliano
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