[Mailman-Users] unknown user test at mydomain.com

[doyle]

I just setup mailman from ports in FreeBSD running postfix.

The installation worked.  I setup a test list but anytime i send mail to
it I get a return to sender mail.

here's an entry from my maillog:

May 16 12:59:56 watchdog postfix/local[9674]: CE86FCEBF:
to=<test at watchdog.sytes.net>, relay=local, delay=1, status=bounced
(unknown user: "test")

I have set the mailman aliases and run newaliases.  I have also set the
cron jobs.  Do I need to add a "test" user to my system that corresponds
to the "test" list name?  I'm not quite sure where I need to go from here.
Any help would be greatly appreciated.

- Adam