Hello, I have been searching if SMTP protocol supports limiting the number of recipients an MTA will accept and if there is any way to implement such a setup in postix, but couldn't find a definitive answer. What I mean is telling the other side not to send more than one rcpt, just like default_destination_recipient_limit=1 but in reverse.
I am trying to implement a policy based filter where one recipient could select to accept a certain mail and the other does not without having to accept for both recipients and bounce for one. Thank you in advance -- Mehmet Avcioglu