[lug] postfix "policy" question

[Chip Atkinson]

Greetings,

I'm trying to setup spf and greylisting on postfix to cut back on spam and
seem to be having a little trouble getting the greylist stuff to be used.

Is there someone who's got both working and would they mind sending me
their config files so I can look at the examples?  Specifically I'm
looking for /etc/postfix/master.cf /etc/postfix/main.cf I'm pretty sure.
:-)

Thanks in advance.

Chip