> On Oct 9, 2018, at 12:57 PM, Marcio Vogel Merlone dos Santos 
> <marcio.merl...@a1.ind.br> wrote:
> 
> Thank you for your answer. Do you have any direction I could follow to 
> achieve my end goal - control who can send mail to some addresses with data 
> from LDAP? Any hint or idea is helpfull.

Postfix has only single-key queries.  If a single set of
authorized senders across all the aliases will not do,
you'll need one restriction class per-alias, or will need
to move the lookups into a policy service, which can do
multi-key lookups.

-- 
        Viktor.

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