FOR IMMEDIATE RELEASE

Stalker Announces the LinuxPPC Version of the CommuniGate Pro Mail Server.

Key Features: Multi-platform Support
Industry-strength, highly scalable
Administration via the Web
Extensive multi-domain support
Unique IMAP multi-mailbox features
HTTP access to E-mail, built-in Web Mailer
Extensive Anti-Spam techniques
Mailing Lists with Web Access and Interactive Archive Search
LDAP and ACAP Support
Personal Web Pages with automated publishing
Cluster Support

MILL VALLEY, CA - July 20, 1999 - Stalker Software, Inc. today
announced the LinuxPPC version of their hi-end CommuniGate Pro
messaging system. CommuniGate Pro is a Unified Messaging Server which
supports most major operating systems. CommuniGate Pro is recognized
for its many features, high speed and reliability.

Since its first commercial release in September 1998, Stalker has
expanded the operating systems it supports to include MacOS X, Linux,
IRIX, Solaris, Windows9x/NT, FreeBSD, D/Unix, HP/UX, BSDi and now
LinuxPPC. On all platforms, CommuniGate Pro presents the same
interface and uses the same file formats, allowing any organization
to switch server platforms in less than an hour.

Scalability

CommuniGate Pro can support 100,000-200,000 accounts from one server
making it a viable solution for small to mid-size ISP's. For extra
large ISP's handling millions of accounts, CommuniGate Pro offers
clustering support allowing for easy management and real scalability
options.

Personal Web Pages

In addition, the new 3.1 version of CommuniGate Pro supports Personal
Web Sites with automated publishing. Users can create their own Web
sites and upload web files to the CommuniGate Pro server using any
composer application that supports the HTTP PUT method (like
Netscape(r) Composer). Besides, Personal Web Sites can be updated
using simple HTML forms. Support for uploading via the CommuniGate
Pro FTP server should follow in the next release.

Security

CommuniGate Pro supports secure connections for all services it
supports. Not only the HTTP services (Web Administration and WebUser
interface to E-mail) can be used via secure internet connections, but
all other communications, such as IMAP, POP, SMTP, LDAP, ACAP can be
secured.

Anti-Spam Features

Stalker Software is known for the sophisticated Anti-Spam features in
their current mail servers, and CommuniGate Pro is no exception.
These features include: restricted relaying, black-listing IP
addresses, domains and individual accounts; return-path verification,
and support for DNS-based black-list servers (RBLs). In addition,
CommuniGate Pro now supports the highly effective Spam Trap feature
created for the Stalker Internet Mail Server. By creating a
fictitious, "spam-trap" account with CommuniGate Pro, the bulk
mailing lists that use robots to scan and gather email addresses from
web pages will pick up this ficticious account for their list. Any
email coming into the server addressed to the "spam-trap" account
will allow the Server to reject the entire messages, and they will
not be delivered to any real recipient on your site either.

Try Before You Buy

CommuniGate Pro is marketed in the same manner as the CommuniGate
System for the MacOS. There is a Free Trial Version available at
(http://www.stalker.com/ CommuniGatePro/). This version is the actual
software for purchase, but it adds banners to the transferred
messages. Stalker issues license "keys" that should be entered into
the server settings to disable these banners.

CommuniGate Pro Pricing packages are as follows:

License Includes Price
Professional 50 User License, 5 mailing lists $499.00 USD
Corporate 200 User License, 15 mailing lists $999.00 USD
Enterprise 1000 User License, 100 mailing lists $1999.00 USD
ISP 30,000 User License, unlim lists $4999.00 USD
Large ISP Unlimited User License, unlim lists $29,999.00 USD

Updates and support

The updated versions (both betas and finals) are posted on a regular
basis. Update information and free technical support are available
via Stalker's very active mailing list cgatepro@stalker.com.
Stalker Software, Inc. develops and distributes networking and
communication software. The company was founded in Europe in 1991 and
opened its U.S. offices in 1993 at 655 Redwood Highway, Suite 275,
Mill Valley, Calif. 94941. For more information about Stalker
Software and its products, please contact Ali Liptrot, director of
sales and marketing, at (800) 262-4722 or (415) 383-7164. She can
also be contacted by fax at (415) 383-7461 or E-mail at
(ali@stalker.com). Visit the Stalker Software web site at (http://
www.stalker.com).