Hi Viktor,

I never used this but am now curious — in reading the docs on this, it looks like the proper content in the “{ }” fields would be the IP or FQDN to\from one wishes to restrict traffic — do I have this correct?



On 18 Sep 2020, at 9:09, Viktor Dukhovni wrote:

On Fri, Sep 18, 2020 at 11:50:02AM +0200, Marek Kozlowski wrote:

I've been asked a very strange question. According to the best of my
knowledge there is no setting but maybe I'm wrong:

Is it possible the define a very selective relay according to the
following pseudo code:

/* a, b and c are set to some single values */
if (client's_IP==a)

    smtpd_client_restrictions =
        permit_auth_destination,
        check_client_access inline:{ a=OK },
        reject

     if (MAIL_FROM==b)

    smtpd_sender_restrictions =
        permit_auth_destination,
        check_sender_access inline:{ b=OK },
        reject

         if (RCPT_TO==c)

    smtpd_recipient_restrictions =
        permit_auth_destination,
        check_recipient_access inline:{ c=OK },
        reject

--
    Viktor.

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