I don't know about anyone else, but I wish that the Kaspersky products (especially those for email servers) had the ability to have real time links to DNSBL lists. It would make it easier for us Network Administrators/System Administrators to prevent spam. The Anti Spam part of Kaspersky Security is good for known addresses, but faked/cloaked/hacked email addresses there has to be an easier way. Especially since whoever it was that created auto-generate-email scripts love sending a load of utter garbage that isn't caught by the Kaspersky product as it thinks they are legit addresses (Faking emails from banks is a good example).

This will no doubt be appreciates by all businesses out there.

Well, the Kaspersky Anti-Spam application, a server anti-spam solution implements checks through DNSBL services as one of the anti-spam methods.

For a personal solution it's not a brilliant idea - can you imagine amount of traffic, DNS requests and load to your company's DNS servers or to the DNS servers of an ISP provider generated by, say, 200 or 500 workstations if each of them would check your mails through a long list of DNSBL servers...? Plus, it's better to verify the address of a spammer client host through DNSBL, it's always available at the mailing system that accepts messages from internet and in the same time such information is sometimes lost when you receive your mail via POP3, IMAP or web upon final delivery to your mailbox. Plus, often such the checks through DNSBL services requre some 10-30 seconds, implementing this in the personal client may produce very strange effects for a user when messages marked as spam after half a minute... This can also slow down you mailing client significantly...

DNSBLs can only work fine as a server solution. Take into account as well that according to Kaspersky Anti-Spam global statistics, where it's implemented, this method gives just 3-4% of detections overall...