Spamjadoo - Ultimate Spam Protection 9.1
Spamjadoo offers complete gateway level protection to prevent spam from entering your email server. Based on a unique Privacy paradigm, it is vastly superior to content-filter based products.Now Spamjadoo supports secured Password Authentication (SPA) for outbound emails and automatically stops brute force attack. The multiple checks that are run includes DHA, SPF, SMTP Auth, reverse DNS, blacklist/white list check, Senders Domain MX check, Blocking of specific attachments etc.
This product is designed to run on the IBM Smart Cube. It is available separately or as part of a complete solution that includes a UBM Smart Cube. To see more on IBM Site, please click here. 
http://www.ibm.com/smartmarket/in/en/_/N-bZg/Ntt-antispam/ListingOverviewAction.action?listingId=10997

What makes Smart Cube different?
IBM Smart Cubes are easy to install and maintain. You get the cube, open the box, plug in the network cable, power-on the system and you will be up and running in less than one hour. The business application you purchased is downloaded to the Smart Cube from Smart Market. IBM provides first level of support for the entire pre-integrated solution. Each Smart Cube features the Smart Desk which makes it easy to manage--it does not require IT expertise. Smart Desk provides administration functions, automatic software upgrades, and the ability to add more applications directly from the IBM Smart Market.