Greylisting in kolab to reduce spam

[Divan Santana]

Hi All,

Quick question hopefully someone knows this... ?

I know in postfix you can implement postgrey which I have find to help reduce 
spam quite a bit in the past.

I believe you can intergreat postgrey in kolab but I'm not sure if there is a 
point.

Is the 
"smtpd_recipient_restrictions = check_policy_service unix:private/kolabpolicy"
and
"kolabpolicy_time_limit = 3600
kolabpolicy_max_idle = 20"
a similar thing to  postgrey?
If it is how does this work so that I can try increase it to reduce spam?

If not then I'll maybe go ahead and try intergreat postgrey into kolab.

Thanks very much.
-- 
Divan Santana

Skype:          	DivanSantana
Gtalk/MSN:		Divan.Santana at GMail.com