Nothing like that exists already. It wouldn’t be impossible to add, but it wouldn’t be trivial, either. Postfix has some excellent hooks for allowing SMTP-time checks to occur, we’re just not using them because mail-receiver was very much a “simplest thing that could possibly work” implementation.
If you’d like to work on this, I’m happy to provide guidance, code review, and testing. I’d like to see it happen, it’s just not something that I think anyone here at CDCK World HQ will have any bandwidth to work on any time soon.