[exim] Exim Newbie Seeks Help ;)

Hi Guys,

I am an exim newbie so please be gentle ;) Apologies if this is a simple
question - I really can't find the answer for it though.

How can I send mail to "test@???" and have it delivered to my
system user "usera"?. In sendmail I was used to the virtusertable which
enabled me to point email addresses direct to a system user. In exim it
seems that I can only deliver mail to a system user of the same name -
ie mail to usera@??? is delivered to usera - I can't send mail to
test@??? and have it arrive in usera's mailbox.

Hopefully this makes sense....

Thanks in advance.
Dave