I added a 2nd NodeWorx user to grant somebody temporary access to NodeWorx. For some reason, this changed the qmail postmaster alias to that secondary user email. I have deleted the user and the alias did not changed. I changed it manually. I cannot duplicate this issue now though. I can't say that creating the secondary NodeWorx user changed the root alias immediately, because I was unaware of this for a couple of days. But I thought I would report it.