Autorespond to the "Reply-To" address

Hi,

I am new to procmail (and I am not a programmer).  I am trying to create an 
autoresponder that will respond to the Reply-To email address specifically 
instead of the From email address.

My current recipe is shown below.  Any help is greatly appreciated.
tbergstrom(_at_)visi(_dot_)com


:0 hc
* ^TOme(_at_)mydomain(_dot_)com
* ^SUBJECT:*.test
* !^FROM_DAEMON
* !^X-Loop:me(_at_)mydomain(_dot_)com
  | (formail -rtb -I"Precedence: junk" \
    -I"From: <me(_at_)mydomain(_dot_)com>" \
    -A"X-Loop: me(_at_)mydomain(_dot_)com; \
    cat $HOME/response.txt \
    ) | $SENDMAIL -t