Federal Agencies Use Tumbleweed MMS to Protect E-mail Networks; Tumbleweed MMS Offers Government Agencies Complete Internet E-mail Management Solution

Business Wire, Nov 1, 2000

Business Editors/High-Tech Writers

REDWOOD CITY, Calif.--(BUSINESS WIRE)--Nov. 1, 2000

Tumbleweed Communications Corp.(R) (Nasdaq:TMWD), a leading provider of secure Internet communications services, today announced that the Department of Energy (DOE), General Services Administration (GSA), and the Center for Drug Evaluation and Research (CDER) under the Food and Drug Administration have chosen Tumbleweed Messaging Management System (MMS)(TM) to secure, monitor and manage the e-mail communication stream between their employees, other government agencies and business partners on the Internet.

Tumbleweed MMS is a set of e-mail management products that enables these government organizations to protect sensitive data on the Internet. Each of these organizations can use MMS to set and implement policies for Internet e-mail by applying content control, encryption, access control, attachment management, virus scanning and digital signature policies that are administered centrally and universally across their enterprise.

"We implemented Tumbleweed Messaging Management System (MMS) to manage our e-mail communications stream with regulated industry, and other agencies," said Greg Brolund, associate director for the Office of Information Technology for the Center for Drug Evaluation and Research. "We can centrally create policies to oversee and control the flow of Internet e-mail communications with minimal impact on our end users and without exhausting our vital IT resources."

"Like any large organization today, the Department of Energy depends on e-mail for daily communications among its offices and business partners. Protecting our e-mail network from harmful messages, such as viruses and spam, is critical," said Charlie Smith, lead engineer for the Department of Energy. "Tumbleweed MMS enables us to protect our networks, ensuring the continued flow of e-mail, while filtering out unsolicited e-mails that do not comply with department guidelines."

"Tumbleweed MMS enables federal agencies to manage and oversee centrally, the secure delivery of business-critical information flowing through their e-mail networks everyday," said Jeffrey C. Smith, president and CEO, Tumbleweed Communications Corp. "Using MMS, our federal customers can protect their information assets traveling over the Internet and safeguard their enterprise from harmful content without placing a burden on their end-users."

About Tumbleweed Communications Corp.

Tumbleweed Communications Corp. is a leading provider of advanced e-mail solutions for business communications. Our products and services enable businesses to create and manage secure online communication channels that leverage established e-mail networks and enterprise applications. Tumbleweed Integrated Messaging Exchange is a platform and set of applications for creating secure communications channels between a business and its customers, partners, and suppliers. Tumbleweed Messaging Management System is a comprehensive solution that extends internal e-mail systems to the Internet through centralized security, policy enforcement, filtering and archiving. Used together, Tumbleweed IME and Tumbleweed MMS automatically apply security policies and redirect sensitive e-mail for secure, trackable delivery. Companies that rely on Tumbleweed IME or MMS products include American Express, Chase Manhattan Bank, Datek Online, the European Union's Joint Research Council, the Food and Drug Administration, Northern Trust, UPS, Pitney Bowes, TD Waterhouse, and the United States Postal Service.

Except for the historical information contained herein, the matters discussed in this press release may constitute forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those projected, particularly with respect to the performance of Tumbleweed's products. In some cases, forward-looking statements can be identified by terminology such as "may," "will," "should," "potential," "continue," "expects," "anticipates," "intends," "plans," "believes," "estimates," and similar expressions. For further cautions about the risks of investing in Tumbleweed, we refer you to the documents Tumbleweed files from time to time with the Securities and Exchange Commission, particularly Tumbleweed's Form S-1 filed July 26, 2000, Form S-4 filed August 3, 2000, Form 10-K filed March 30, 2000, and Form 10-Q filed August 14, 2000. Tumbleweed assumes no obligation to update information contained in this press release.

Note to Editors: Tumbleweed is a registered trademark and Integrated Messaging Exchange, IME, and Messaging Management System (MMS) are trademarks of Tumbleweed Communications Corp.