procmail-formail-sendmail not spoofing From addr

Hi guys

I wrote the following code for my .procmailrc file.  It mainly works fine,
fowarding the body of the received "test(_at_)mydomain" msg to the new address
after replacing the subject, but it will not spoof the "From:" or
"Reply-To:" address.  Instead, it always shows as being from my main
account.  The email is fwd'ed going to a handheld device that has a rather
cumbersome keyboard and extremely limited email handling.

What am I doing wrong?

Thanks!
Matt

########

:0c  # forward test messages
* ^(Cc|To).*test
* !^X-Loop: test

{
# appends new message info to the log file
:0c
| (echo `date` >> $HOME/pmrcs/test.log ; \
        formail -k -x "From:" -x "Subject:" >> $HOME/pmrcs/test.log)

# still not spoofing FROM addr
:0:
| (formail -rk -p "" \
        -i "Reply-To: test(_at_)mydomain(_dot_)com" \
        -i "From: test(_at_)mydomain(_dot_)com" \
        -I "To: mydevice(_at_)otherdomain(_dot_)com" \
        -I "Subject: test" ;\
        echo "." \
 )| $SENDMAIL -t -oi

}



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