send-hook From: change

[J McKitrick]

I'm having a problem getting pattern matching to work for send-hook.
i want to change my From: address when i send mail to any list on
freebsd.org.  Here's what i have:

send-hook . "my_hdr From: [EMAIL PROTECTED]"
send-hook (freebsd-*@freebsd.org) \
"my_hdr From: [EMAIL PROTECTED]"

The lists i refer to are freebsd-<whatever>@freebsd.org

What am i doing wrong?
-- 
-jm