[Mimedefang] Need to run /usr/sbin/makemap from my filter

[Wayne]

Hi all,

    I have created a filter that keeps track of invald accounts and after a
set number of attempts it adds the sending host IP to  /etc/mail/access. Now
I need to call /usr/sbin/makemap hash access.db < access so sendmail can
block the IP.

So how do I call /usr/sbin/makemap hash access.db < access from my filter.

Thanks
Wayne