Re: Very selective relay

[Marek Kozlowski]

:-)

On 9/18/20 6:09 PM, 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

Even if so *I'm in doubt) are sure it would work as and 'AND'?

if (client's_IP==a)
     if (MAIL_FROM==b)
         if (RCPT_TO==c)
             then relay=OK

(relay if and only if all conditions are met)

?

Seems very suspiciously strange..

Best regards,
Marek

Are you quite sure that 'permit_auth_destination' is allowed in 'smtpd_client_restrictions' and 'smtpd_sender_restrictions'??

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