SOURCE: Cloudmark

October 01, 2007 08:30 ET

Cloudmark Provides Industry-Leading Messaging Security to XS4ALL With Cloudmark Authority for Apache SpamAssassin

Cloudmark Authority Increases SpamAssassin Message Filtering Accuracy for XS4ALL by 50 Percent

SAN FRANCISCO, CA--(Marketwire - October 1, 2007) - Cloudmark, the global leader in carrier-grade messaging security, today announced that XS4ALL, a provider of hosting and broadband services in the Netherlands, has deployed Cloudmark Authority alongside Apache SpamAssassin™ to protect its one million subscribers from the full spectrum of messaging threats, including spam, phishing and viruses. Since deploying Cloudmark, XS4ALL has experienced a dramatic reduction in the level of spam, which, in turn, has led to improved customer satisfaction and savings in infrastructure and operational costs.

Cloudmark Authority enables service providers to significantly increase filtering accuracy while cutting CPU/server requirements and eliminating the need for on-going rules administration. Prior to implementing Cloudmark Authority on SpamAssassin, XS4ALL experienced message filtering accuracy around 60-70 percent. After deploying Cloudmark Authority, XS4ALL's message filtering accuracy jumped to more than 97 percent.

Cloudmark Authority for SpamAssassin incorporates an integration layer that allows it to seamlessly plug into any existing SpamAssassin implementation, enabling the solution to be deployed in as little as half an hour. With Cloudmark Authority, there is no need for development resources or any impact on the existing infrastructure.

Cloudmark Authority combines Advanced Message Fingerprinting and real-time corroborated feedback from the Global Threat Network to rapidly scan messages for all forms of abuse, including viruses, spam and phishing, using an in-memory cache of verified fingerprints that is updated every 45 seconds.

Cloudmark has a long history with the open-source community through Vipul's Razor. Developed by Cloudmark's Founder and Chief Scientist Vipul Ved Prakash, Razor was the first messaging security plug-in for the SpamAssassin platform.

"Cloudmark's objective is provide the most accurate and responsive messaging security solution to service providers of all sizes, regardless of whether they are using proprietary or open-source software," said Vipul Ved Prakash, chief scientist of Cloudmark. "Cloudmark Authority for SpamAssassin delivers the most advanced messaging protection to service providers already using SpamAssassin, enabling them to experience the added benefits of Cloudmark's technology without any disruption to existing infrastructure or operations."

SpamAssassin users can get a free trial of Cloudmark Authority by going to or by emailing

About XS4ALL

XS4ALL was the first organization to provide Internet access to private consumers in The Netherlands, celebrating its 15th birthday in 2008. The company has a long history of introducing new technologies to the market. XS4ALL has a strong professional, socially responsible and innovative image. For more information, please visit

About Cloudmark

Cloudmark, Inc. is a global leader in carrier-grade messaging security, delivering the industry's fastest, most comprehensive and most accurate real-time spam, virus and phishing protection for fixed and mobile networks. Cloudmark solutions combine highly sophisticated Advanced Message Fingerprinting™ technology based on innovative, high-performance algorithms and a Global Threat Network consisting of trusted reporters in 163 countries to provide security intelligence and filtering at all points in the messaging infrastructure. Cloudmark solutions currently protect more than 180 million mailboxes and more than 80 of the world's largest service provider and mobile operator networks (including seven of the top 10 in North America), such as EarthLink, Comcast, Cablevision, Charter Communications, Cox Communications, NTT Communications, SprintNextel, Virgin Mobile and Swisscom. Cloudmark is a privately held company headquartered in San Francisco with offices in London, Tokyo, Beijing and Hong Kong. For more information, please visit

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