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Zix Corporation Receives The Open Group's S/MIME Gateway Certification; Compatible Add-on to Be a Feature of ZixVPM Version 2.3

DALLAS--(BUSINESS WIRE)--Oct. 19, 2004--Zix Corporation (ZixCorp(R)), (Nasdaq:ZIXI), a global provider of secure e-messaging, e-prescribing, and e-transaction applications and services, today announced that an add-on S/MIME (Secure Multipurpose Internet Mail Extensions) feature of ZixVPM(R) (Virtual Private Messenger) has met the conformance requirements of The Open Group's S/MIME Gateway Product Standard. The new add-on will be available later this year in the next release of ZixVPM, version 2.3.

ZixCorp's S/MIME Gateway add-on will enable customers to interoperate with partners who have implemented S/MIME Gateway certified products from other vendors. ZixVPM is a policy-driven, server-based solution that provides easy-to-deploy company-wide encryption, security, content filtering, and management of inbound and outbound email.

The Open Group's S/MIME Gateway certification program creates an industry standard for interoperable products that encrypt email at enterprise boundaries for transmission over the Internet. According to The Open Group, S/MIME Gateway certification is expected to be widely supported and accepted by government and other major procurers of IT devices. The overall goal of the program is to assist in the creation of a global secure messaging environment which is vendor-product neutral.

"An essential component of all ZixCorp services is interoperability with existing systems for easy implementation. This certification for ZixVPM keeps it up to date and compatible with the most current standards available," said Rick Spurr, president and chief operating officer for ZixCorp.

The certification is now published in The Open Group's Certification Register at

About The Open Group

The Open Group is a vendor-neutral and technology-neutral consortium, whose vision of Boundaryless Information Flow(TM) will enable access to integrated information within and between enterprises based on open standards and global interoperability. The Open Group works with customers, suppliers, consortia, and other standard bodies. Its role is to capture, understand, and address current and emerging requirements, establish policies, and share best practices; to facilitate interoperability, develop consensus, and evolve and integrate specifications and open source technologies; to offer a comprehensive set of services to enhance the operational efficiency of consortia; and to operate the industry's premier certification service. Further information on The Open Group can be found at

About Zix Corporation

Zix Corporation (ZixCorp(R)) is a global provider of secure e-messaging, e-prescribing, and e-transaction applications and services. ZixCorp offers a range of solutions to protect organizations from viruses, spam, and electronic attack, as well as enabling secure electronic communications, such as email encryption, e-prescribing, on-line doctor visits, and electronic lab orders and results. ZixCorp helps organizations of any size to streamline operations, reduce risks, and leverage the efficiencies of e-messaging. For more information, visit

CONTACT: Zix Corporation, Dallas
Christa Osswald, 214-370-2175
Investor Relations:
Peter Wilensky, 214-515-7357

SOURCE: Zix Corporation