Interliant Selects Postini For Email System Security And Management Solution.

Business Editors/Hi-Tech Writers

PURCHASE, N.Y.--(BUSINESS WIRE)--June 18, 2002

INIT Messaging Leverages Postini Platform to Provide Domino and

Exchange Customers with Advanced Email Services 

Interliant, Inc. (NASDAQ:INIT), a leading provider of managed infrastructure solutions, today announced that it has chosen Postini to provide security and management solutions for Interliant's INIT Messaging offerings. Interliant will use the Postini platform to offer advanced email services, including junk mail blocking, virus detection and cleaning, and real-time system monitoring and control, to its expanding base of messaging clients.

"As our client base for messaging services and managed messaging for Domino and Exchange continues to grow, we are constantly seeking additional value-added and industry-leading services for those customers," said Steve Munroe, Interliant COO. "After evaluating several technologies, we chose Postini because their solution allows us to offer best-in-class virus protection and junk mail blocking features, in a scalable and efficient manner. The Postini solution also was the only solution that provided real-time visibility and control of all email traffic in our system regardless of mail server type."

"Interliant represents a key win for Postini because we strive to work with customers who are leading the trend to managed corporate IT services," said Scott Petry, VP of Products and Engineering for Postini. "Postini's Active EMS email system management solution is uniquely capable of providing real-time monitoring and control of all activity in order to maximize the security, performance and reliability of Interliant's very large scale distributed email service offering."

About Interliant

Interliant, Inc. (Nasdaq:INIT) is a leading provider of managed infrastructure solutions, encompassing messaging, security and hosting plus an integrated set of professional services products that differentiate and add customer value to these core solutions. The company makes it easier and more cost-effective for its customers to acquire, maintain and manage their IT infrastructure via selective outsourcing. Interliant sells to the large/enterprise market through its direct sales force and to the small and medium-business market (SMB) through its INIT Branded Solutions program, which allows companies to private label its offerings. Headquartered in Purchase, NY, Interliant has forged strategic alliances and partnerships with the world's leading software, networking and hardware manufacturers, including Check Point Software Technologies Inc., DELL Computer Corporation, IBM and Lotus Development Corp., Microsoft, Oracle Corporation, Sun Microsystems Inc. For more information about Interliant, visit www.interliant.com

About Postini

Postini is the leading provider of email security and management solutions to service providers and Global 2000 corporations. The company's patent-pending technologies provide comprehensive anti-spam, anti-virus and email system monitoring functionality to over 700 customers worldwide. Postini's solutions are the first in the industry to deliver these capabilities on a real-time basis and are compatible with all email servers. Postini, headquartered in Redwood City, California, is privately held. More information about Postini, visit www.postini.com.

Interliant, INIT Messaging, and INIT Branded Solutions are trademarks of Interliant, Inc., in the United States, other countries, or both. Postini and Active EMS are the trademarks of Postini, Inc. All other company, product, and service names may be trademarks or service marks of others.

This press release contains forward-looking statements that can be identified by the use of words such as "anticipate," "believe," "estimate," "expect," "intend," "may," "will," "plan," "forecast" and similar words and expressions. Such forward-looking statements involve risks and uncertainties that may cause actual results, performance, achievements and the timing of certain events to differ significantly from the results discussed or implied in the forward-looking statements. Therefore, no forward-looking statement can be guaranteed. Important factors to consider in evaluating such forward-looking statements include uncertainty that demand for our services will increase and other competitive market factors, changes in Interliant's business strategy or an inability to execute Interliant's strategy due to unanticipated changes in its business, its industry or the economy in general, unforeseen difficulties in integrating acquisitions and other factors set forth more fully in Interliant's Annual Report on Form 10-K for the fiscal year ended December 31, 2001, and other filings with the Securities and Exchange Commission. It is not possible to foresee or identify all factors affecting Interliant's forward-looking statements and investors therefore should not consider any list of factors affecting Interliant's forward-looking statements to be an exhaustive statement of risks, uncertainties or potentially inaccurate assumptions. Interliant does not have a policy of updating or revising forward-looking statements, and thus it should not be assumed that Interliant's silence over time means that actual events are bearing out as expressed or implied in such forward-looking statements.