Autoresponder

I'm trying to setup an autoresponder to no only delete messages that are
over 50k total size, but to send a message to the sender that tells them
that the message is too large.  I would like to have a detailed
explanation that I do not accept attachments or large messages at this
account and would like to provide them with an address (inside the body of
the message) that I will accept the attachment. 

I was looking through the archives and found a filter that can do kind of
what I want to do.  However, it is not working.   I have been able auto
kill all messages over 50k, but I can't auto respond.  If somebody could
help me out with this I would appreciate it.  As I am new to procmail
recipies, if you could give a brief explanation of what it is doing, I
would really appreciate it.

This is the recipe that I am trying (basically cut and paste from the
archives)

        :0
        * > 51200
        {
            # Bounce messages should generally be sent to the envelope
            # sender, not the header sender.
            :0
            * ! ^\/Return-Path:\/.+
            * ! ^\/From  *\/[^ ]+
            { ENV_SENDER = $MATCH }
            :0 E
            {   # This message doesn't have an envelope line!
                # This really shouldn't happen, so consult your
                # psychiatrist, or sendmail.cf hacker.  We'll
                # just drop the message on the floor, as there
                # really isn't a better place to put it.
                HOST
            }
            :0
            | (echo "To: $ENV_SENDER"; \
               echo "Subject: Message Too Large: Rejected" ; \
               echo ""; cat - ) | $SENDMAIL $SENDMAILFLAGS --
"$ENV_SENDER"
        }

Thanks for any assistance that you can give me.


Mike K.
grommit(_at_)grove(_dot_)ufl(_dot_)edu