Sender Based Routing Exchange

Question

Good afternoon group, thanks in advance for your answers, how do I create a custom dll to use in exchange 2019 so that the option to use the correct send connector according to the sender, assuming I have 2 or more email domains, can be done effectively without having to resort to third-party options, I read that using visual studio I can create a project in c++ and achieve that goal, I don't have much experience with visual studio, thank you very much

Answer 1

May still apply:
https://www.tuescher.net/Exchange-Sender-Based-Routing/e16.html