FOR IMMEDIATE RELEASE

Stalker Announces Version 3.1 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 – August 9, 1999 – Stalker Software, Inc. today announced
the version 3.1 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 Linux/LinuxPPC, Solaris,
FreeBSD, WindowsNT, MacOS X, BSDi, AIX, D/Unix, and IRIX. 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.
CommuniGate Pro clustering can be used to build frontend/backend
multi-server configurations, as well as symmetric cluster sites. Based on
inter-server synchronization methods, the CommuniGate Pro Cluster can
employ shared file servers (such as NFS servers) without the overhead and
reliability problems associated with the OS-level file locking.

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.

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Stalker Software, Inc. develops and distributes mail servers, 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).