The current qmail configuration is (from /etc/qmail)
              The "me" file (which shows the domain that qmail believes it
              is residing on) is "cat.org.au"

              The "locals" files contain the domains that qmail will deliver
              mail for locally, that is on conway.cat.org.au. For a domain
              listed in this file, an email address of the form
              userX@domainY will be delivered to the local user account
              'userX'. That is, the authenication of users is done by
              checking against /etc/passwd.
              Local domains are: localhost invitro.cat.org.au
              conway.cat.org.au lists.cat.org.au cat.org.au mail.cat.org.au
              purple.cat.org.au black.cat.org.au www.cat.org.au
              cat.triode.net.au lyst.apana.org.au lyst.triode.net.au
              cat.anarki.net au.spunk.org inflate97.conf.au shorter.net
              bikesydney.org massbug.org.au bikeast.org.au
              votefortheforests.com voteforests.com voteforest.com
              voteforests.com.au

              The "virtualdomains" file contains domains that qmail will  
              deliver mail for locally using a different mechanism that
              above, basically translating emails of the form userA@domainB
              via a system such as vpopmail which stores mail in a separate
              non-system-user fashion, or delivers mail to local user
              account or forward it to another system.
              Virtual domains are: lists.cat.org.au:mailman
              indymedia.org.au:indymedia.org.au active.org.au:active.org.au
              andy (at) cat.org.au