Greetings!

I used to run a licensed Mercury server for our company years ago but was forced to switch to MS Exchange by a new manager. I am now trying to setup my own Mercury server for personal use because I'm sick of my provider putting almost EVERYTHING in my junk folder. Unfortunately I have forgotten much of what I knew regarding the setup of Mercury.
I am at the point where I am able to receive mail for my domain but I can not get aliases working. My local user name is "dstevenson" and this is what I entered in c:\mercury\mercury\alias.mer:

(domain name changed for privacy)

dan.stevenson@mydomain.com == dstevenson

I exited and restarted Mercury and sent test emails from a different address but they get rejected with user not known.

What could I have done wrong with my setup? Not sure where to look. What information should I post to get help?