Currently Being ModeratedDec 21, 2012 3:44 AM (in response to John Caradimas)
Never mind this, I solved it. The aliases file used by postfix, is for some reason, located in /etc not in /etc/postfix. I edited that and all is well.
Of course the question remains why didn't the chance in Server.app/Users didn't work, but that's something for Apple to figure.