Well I have started to attempt to integrate ZCS with MailScanner and so far so good ... I have installed Postfix and MS on a front-end server and have querying ZCS for valid domains, mailboxes and aliases in real time via LDAP.

Junking emails via ZCS also updates a shared MySQL Bayes store.

Next part is to write a LDAP hook for the Black/White listing and allow ZCS account access to MailWatch for quarantine work.