sendmail style virtual domains

[Eric Davis]

In sendmail 8.9 I can use the following line in sendmail Virtual Domains
<domain.com>:$1@<otherdomain.com>
This would basically redirect the mail from the first domain for the
user to the user account at the other domain that I want it forwarded
to.  In browsing through the qmail docutmentation I do not see anything
to do that.  

Can someone just point me in the right direction for how to do this.
Thank you very much...

-Eric Davis
[EMAIL PROTECTED]