> Short version: > If you have a delivery address aliasing scheme set up that results in > mail being delivered to duplicate email addresses for the same user, it > is not Postfix's responsibility to de-duplicate those emails. That's on > you. Yeah, I'm aware of this. Also, So far it is doing exactly as expected - Postfix starts 2 different processes to handle this. One that handles the local delivery for b...@a.test, and another for the c...@b.test ... Oh, I'm looking the wrong place, it is not Postfix per se that does things wrong, it is the "remote delivery" of the xMTPSender that handles things "wrong" (seen from my point of view).
I'll dig a bit in the run of that particular one to see how I can solve that. Thank you, Søren P. Skou
