set your "spam tag level" to -1000 in ispconfig so ALL your mail gets tagged with spam information (even the non spam ones, you can see it's score)
rbl's are for postfix ..
Since i want ALL mail checked (nothing custom) i always add them to the main.cf of postfix, the syntax:
Code:
smtpd_recipient_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
check_recipient_access mysql:/etc/postfix/mysql-virtual_recipient.cf,
reject_unauth_destination,
reject_invalid_hostname,
reject_rbl_client virbl.dnsbl.bit.nl,
reject_rbl_client cbl.abuseat.org,
reject_rbl_client bl.spamcop.net,
reject_rbl_client sbl-xbl.spamhaus.org