forwarding when sent from specific SENDER address

[dngi]

(This is on Pair Networks / FreeBSD 6.2 if it matters.
Pair's Qmail help page:

http://www.pair.com/support/knowledge_base/e-mail/using_qmail.html

)

Below is my .qmail file for a forward. Can I add logic to this file so it forwards all mail from a list of specific addresses (sender1@1.com,sender2@2.com...) to another address, forward2@mydomain.com, but all other senders' mail gets forwarded to the original address, forward1@mydomain.com? Thanks for any help.

---------------file:
.qmail-mydomain:com-user1

---------------content:
# FORWARD user1@mydomain.com forward1@mydomain.com
&forward1@mydomain.com