My question is , is there a way to tell postfix that when login account first letter is (a-l) then route mail on account1 and when first letteris (m-z) then route mail on account2 ? without using aliases ?
Yes: transport_maps.
My question is , is there a way to tell postfix that when login account first letter is (a-l) then route mail on account1 and when first letteris (m-z) then route mail on account2 ? without using aliases ?
Yes: transport_maps.