Redwood City, CA, June 27, 2005 - Postini, the industry’s leading provider of email security and management services, and IMlogic, the leader in enterprise Instant Messaging (IM), today announced a strategic partnership to collaborate on resolving threats and malware that propagate the email and instant messaging networks. Postini will integrate IMlogic technology in Postini’s patented, award winning email processing infrastructure to provide a comprehensive perimeter management service covering threats and policy enforcement for all forms of electronic messaging. As part of the agreement, Postini and IMlogic will exchange real-time threat and messaging activity data, providing the world’s largest and most sophisticated electronic messaging threat monitoring system. The relationship is designed to addresses both the growth of IM threats, as well as the convergence of email and instant messaging blended threats.

“Instant messaging is catching up to email as a mission-critical communications tool for corporate users,” said Scott Petry, founder and senior vice president of products and engineering at Postini. “But the vast majority of IM usage is not managed or secured by IT today. With IMlogic technology, Postini will deliver a comprehensive, fully managed security and compliance platform that enables IT to bring all forms of electronic messaging into the management fold.”

“We’re very excited to announce this relationship with the managed services leader of email security and management,” said Jon Sakoda, chief technology officer for IMlogic. “Postini is one of the industry’s exceptional innovation leaders, and its global reach, incorporating 5,000 customers and seven million end users, creates a tremendous opportunity to collaborate and deliver our industry-leading technology through a powerful global managed services network.”

“We chose IMlogic because they are the clear market and technology leader in their category,” said Petry. “IMlogic was the only company that could address our demanding requirements of a massively scaled processing infrastructure with real-time threat detection capabilities.

“Postini provides an umbrella of security for my email system, protecting my users from countless threats.” said Lee Rocklage, IT manager at DPR Construction. “But while my users rely on IM to get their jobs done, I don’t have the same level of security and management over this medium. With the Postini - IMlogic relationship, I’m encouraged that Postini will be delivering equivalent protection and oversight with the same benefits of their managed email security service”.

About Postini Postini, the global leader in secure email boundary services, stops spam and viruses, enforces policy compliance and improves email manageability. Postini's managed service model stops threats before they reach your network. For more information contact Postini at 866-767-8461, or visit http://www.postini.com.

About IMlogic, Inc. IMlogic, Inc. is the market leader in enterprise software for instant messaging, the world’s fastest growing communications medium of all time. The largest Fortune 1000 companies across the financial services, energy, healthcare, government, media, telecommunications, technology, and manufacturing industries depend on IMlogic to manage, control and secure corporate IM usage, while satisfying compliance requirements associated with real-time electronic communications. For more information on IMlogic call 877-IMlogic or visit www.imlogic.com.