I'm hunting for a way to reject mail for unknown users in virtual domains.

I came across this:
http://www.moongroup.com/pub/postfix/sources/snapshot-19990909.WHATS_NEW

permit_address_map appears to be exactly what I want, but was removed from
a later postfix snapshot.

This seems slightly different from local_recipient_maps:
local_recipient_maps only accepts bare usernames, and assumes they are
local users.

How can I avoid blindly accepting all mail for virtual domains? My virtual
tables contain the delivery mapping for ALL virtual users. If the user is
not in the virtual table, (or there is not an virtual.com -> elsewhere
mapping) I want to bounce the mail. Isn't this normal?

Ideally, I need this to be recursive, so that I can have virtual maps
with:

domain.com otherdomain.com
userotherdomain.com realusersomewhere.com

And then bounce mail for nouserdomain.com because it doesn't resolve to
anything.

-- 
Charlie Watts
cewattsfrontier.net                                Frontier Internet
Systems Janitor and Network Plumber           http://www.frontier.net/
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