@Override
    public void setAuditMessage(boolean auditMessage) {
        this.auditMessage = auditMessage;
        JiveGlobals.setProperty("xmpp.audit.message", auditMessage ? "true" : "false");
    }
the time between successive executions of the task that will save
the queued audited packets to a permanent store.
xmppserver/src/main/java/org/jivesoftware/openfire/audit/spi/AuditManagerImpl.java