[Kolab-devel] Some postfix suggestion on Kolab (antispam, security, performance)

[Fabio Pietrosanti]

Gelpi Andrea wrote:
> Be careful using zen.spamhaus.org, it is not free for commercial use.
> If you write something put a note on it.
>   
It simply depend on the amount of query you do each day, not on the usage.

If you have a very big mailserver causing a flood of query to spamhaus
you have to setup an agreement with them.

But today it's the used free rbl