Critical Path Delivers Advanced Messaging Platform to IBM's AIX Enterprise Market; Tec Of Monterrey Selects Critical Path's InScribe Messaging Server on AIX.

Business Editors/High-Tech Writers

SAN FRANCISCO--(BUSINESS WIRE)--Sept. 5, 2000

Critical Path Inc. (Nasdaq:CPTH) today announced it is supporting AIX, IBM's industry leading UNIX operating system for the IBM Power platform. Critical Path ported and optimized its InScribe(TM) Messaging Server to AIX in order to deliver enterprise class messaging solutions to AIX customers. Critical Path also announced that The Tec of Monterrey, a private University in Mexico, has selected its InScribe Messaging Server on AIX as the foundation for its internal messaging system.

Critical Path's InScribe Messaging Server enables IBM to extend its growing portfolio of scalable solutions for enterprises. Designed for speed, reliability and security, the InScribe Messaging Server meets the rigorous messaging requirements of large corporations and is the industry's most scalable and robust in-house messaging solution. The award-winning InScribe Messaging Server supports Web-based email, in addition to SMTP, POP3 and IMAP4 email protocols, and LDAP directories.

"With this move, Critical Path's InScribe Messaging Server runs on very high-end hardware that IBM has leveraged for AIX, including the RS/6000, AS/400 and S/390," said Dana Gardner, research director for messaging at Aberdeen Group in Boston. "The combination of Critical Path's messaging server on AIX provides a cost-effective solution while delivering carrier-class scalability."

AIX runs across the entire range of RS/6000 systems, from entry-level servers and workstations to powerful supercomputers like the RS/6000 SP, which runs some of the most complex commercial and technical workloads in the world.

Key Customer Applauds the Combined Technologies

The Tec of Monterrey selected Critical Path's InScribe Messaging Server on AIX to deliver the most advanced messaging solutions to more than 80,000 students and more than 6,200 faculty members across more than 30 campuses in Mexico and other Latin American countries. By standardizing on Critical Path's InScribe Messaging Server, The Tec of Monterrey is able to eliminate the hardware and IT costs associated with managing the multitude of messaging servers from different vendors currently in use across the university's network of campuses.

"In order to ensure consistent and accurate communication and collaboration across our network of campuses we needed to standardize our messaging system across all of our campuses. We selected Critical Path's InScribe Messaging Server because it was the only messaging solution to meet all of our requirements and provide the performance, scalability and security we demanded," said Eduardo Salcedo Delgado, director of Education Technology for the Tec of Monterrey. "An increasing number of our courses involve online homework, communication and course materials. By leveraging Critical Path's InScribe Messaging Server we are able to provide students and faculty with the leading Web-based email, which they can access anywhere at any time."

"The InScribe Messaging Server is an important enhancement to the AIX environment," said Dr. Tilak Agerwala, vice president UNIX product management and marketing. "The combination of AIX, the industry's leading UNIX operating system, and the InScribe Messaging Server will help give our enterprise customers a wider choice of e-business solutions."

"AIX is a significant force in the enterprise computing market," said Joe Duncan, vice president and chief information officer of Critical Path. "By supporting the AIX platform Critical Path is able to further deliver messaging solutions that support heterogeneous enterprise environments. The combination of Critical Path's messaging server with IBM's technology will provide customers with the solutions they demand."

About ITESM 

The Monterrey Institute of Technology and Higher Education is one of the most prestigious private universities in Mexico and Latin America. It has 29 campuses in Mexico, and its educational services are currently being extended to other countries throughout the continent. With a student enrollment of nearly 80,070 and a faculty of 6,201, the Institute offers 31 undergraduate majors, 45 master's and doctoral programs, in such fields as engineering, computer science, business administration, communications, food technology, law and medicine. The Monterrey Tech System is a center for the generation and transfer of knowledge in support of the development of Mexico and Latin America. Research and development centers concentrate on planning development, increasing competitiveness, preserving and improving the environment, and upgrading education. For more info visit www.itesm.mx.

About Critical Path, Inc.

Critical Path, Inc. (Nasdaq:CPTH) is the dominant global provider of complete end-to-end Internet messaging and collaboration solutions for wireless, Internet-centric, telecommunication and corporate businesses. Through its allsourcing strategy, Critical Path is the only advanced messaging provider to offer businesses the flexibility to outsource, midsource or insource all or part of their messaging and collaboration applications. Critical Path has built an industry-leading global infrastructure with data centers connected to key Internet exchange points. Critical Path's technology currently reaches more than 125 million end-users through its customer relationships including more than 25 million wireless devices. Critical Path provides reliable, secure, and scalable e-mail and a flexible suite of enhanced messaging services to partners such as E*TRADE, CompuServe, Network Solutions, U S West, Sprint, France Telecom, British Telecommunications, and ICQ. Critical Path is headquartered in San Francisco, with offices in locations nationwide and in Germany, England, Ireland, France, Italy, Switzerland, Japan, Brazil and Argentina. More information on Critical Path can be found at www.cp.net.

Note to Editors: Critical Path and the Critical Path logo are the trademarks of Critical Path, Inc. All other trademarks are the property of their holders.

The statements in this press release relating to matters that are not historical are forward-looking statements. Actual results could differ materially from these forward-looking statements. Risks and uncertainties facing Critical Path are described in its prospectus dated June 1, 1999 and with its periodic filings with the Securities and Exchange Commission (www.sec.gov).