Hi,

I always think that only hosts in mynetworks can do relay on my server,
but...
I created the following rule

smtpd_recipient_restrictions =
    check_sender_access hash:/etc/postfix/dominios_permitidos,
    reject

and put this on the dominios_permitidos map
meudominio.com.br OK

But when I do this, all hosts that use meudominio.com.br on the MAIL FROM
command are allow to use my server to relay to the outside world. Even this
host don't list on mynetworks.

My main.cf file is following

myhostname = r01.meudominio.com.br
myorigin = $myhostname
mydestination =
local_recipient_maps =
local_transport = error:Nao aceitamos entrega local
mynetworks = 127.0.0.0/8

relay_domains = $mydestination

inet_interfaces = all

smtpd_recipient_restrictions =
    check_sender_access hash:/etc/postfix/dominios_permitidos,
    reject


If I remove this last three lines the relay becomes close.
Anyone knows how to restrict relay and only accept MAIL FROM my domain?

Thanks for your attention!!

Jerônimo

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