[newbie] Procmail

[Vic]

Hey all I was wondering if anyone had any procmail
experience.

I want to write a simple procmail 'recipe' that would
bounce mail from certain addresses rather than just
move them to /dev/null

I would like to have a little text message ready on
my ISP's server to be sent to anyones address who
spams me.

Also I would like this little message to be sent only to the
spammers address and not to a mailer daemon so
to prevent mail loops.

Thanx
--
Vic
Student Of Linux