FOR RELEASE ON MARCH 2, 1998

Contact: Anita Holmgren, Tenon Intersystems
Phone: 805-963-6983 or 888-4-NetTen
E-mail: anita@tenon.com
http://www.tenon.com/products/netten

ULTIMATE EMAIL SERVER NOW AVAILABLE FOR POWER MACS

Leading E-Mail Server Software Now Available for Power Macintosh

Santa Barbara, CA, March 2, 1998. Tenon Intersystems, provider of
award-winning software, today announced an industrial-strength mail server
for Power Macintosh. Tenon's new mail server, called NetTen, is based on
Post.Office, a powerful email server, developed by Software.com, Inc.
Software.com is the uncontested leader in email server software, having
sold licenses for more than ten million email mailboxes worldwide.

Post.Office was designed with strong emphasis on security, scalability, and
ease-of-use, setting the standard for email server solutions. Post.Office
is in use at tens of thousands of organizations worldwide, supporting
millions of users. By leveraging their existing "UNIX virtual machine"
technology, Tenon, under a licensing agreement with Software.com, has
brought Post.Office to MacOS in the form of a Macintosh application.

NetTen 1.1, Tenon's new mail server, includes Domain Name Service (DNS) and
Post.Office, running in Tenon's sophisticated execution environment and
taking advantage of Tenon's high-perforamance TCP stack and native fast
file system. Running a mail server on Power Macs in Tenon's unique
environment means that adminstrators no longer have to be concerned with
Macintosh file system limitations. NetTen can support an unlimited number
of multihomed mail accounts and services over 10,000 messages per minute.

NetTen supports SMTP (Simple Mail Transfer Protocol) and ESMTP (Extended
Simple Mail Transfer Protocol) for multiple domains on a single host. It
supports automatic reply and integrated 'finger', POP3, IMAP4 and MIME mail
services. In addition, it provides robust, anti-spam features and web-based
administration in a single package that is easy to install, configure and
maintain.

SMTP is the internet mail protocol used to deliver mail between multi-user
systems. ESMTP includes an important feature called ETRN, a remote wakeup
feature that allows use over dial-up IP connections. ETRN enables a client
to request that the server start the processing of its mail queue for
messages that are waiting at the server for the client machine. Thus, when
a user dials his ISP, he is able to trigger the sending of his waiting mail
messages. POP has a similar role, but allows clients to receive mail
through a POP session, rather than by using SMTP. POP was designed to
identify the user by username and password, transfer the mail to a desktop
computer and remove the mail from the server.

IMAP (Internet Message Access Protocol) is similar to POP, but has many
advanced features. IMAP allows the user to do sting searches thru the mail
that resides on the server and to selectively decide which mail should be
transferred. An advantage of IMAP is that it allows the mail to be stored
on the server in server-resident folders. This enables users to read their
email from different client machines at different times, giving
globe-trotting, computer-hopping users more flexibility in reading and
managing their mail.

MIME (Multipurpose Internet Mail Extensions) is an Internet standard for
the format of messages with multiple parts and with non-ascii data.
MIME-encoded messages can contain HTML, video and audio and client mail
readers that support MIME can handle this diversity in a graceful way.
IMAP4 even has features to allow retrival of parts of a MIME encoded
message.

NetTen's spam control solves a major problem encountered by Internet
Service Providers (ISPs) and corporate intranets - the unauthorized use of
email services to send unsolicited bulk messages, or 'spam' mail. Using a
variety of IP address and domain name restrictions, NetTen allows service
providers to deny the use of their mail server as a relay host for
unsolicited email and to block unsolicited email from entering their mail
server, thereby eliminating unwanted spamming. Service providers can
configure NetTen to recognize a sender's specific IP address or domain
name, allowing them to refuse delivery of spam mesages before their server
is burdened.

Designed to ease the administrative burden of maintaining an Internet mail
server, NetTen includes 'fill-in-the-blank' Web-based forms for remote
management. System administrators can configure and monitor multiple NetTen
servers from a secure, remote site using any Web browser. By using
fill-in-the-blank email or web-forms for managing user accounts and
configuring the system, the administrator has access to the mail server
from anywhere on the Internet. When a form is completed, the administrator
simply submits it to the system using any popular Web browser, and NetTen
automatically executes the changes. Users can also benefit from the ease of
Web forms management to change certain aspects of their email account, such
as vacation messages and directory information. This feature gives more
control to the user and reduces the work of the administrator.

Tenon products are available through DevDepot
(http://www.devdepot.com), mailto:orders@devdepot.com, Toll free:
800-MACDEV-1, Outside US/Canada: 805-494-9797, Fax: 805-494-9798. or
directly from Tenon. The product is priced at $495 for an unlimited number
of mail accounts.

Tenon has been producing sophisticated networking software for Apple
platforms since 1989. Tenon provided the first multihoming TCP stack for
Macintosh, the first Macintosh IP forwarding software, the first Macintosh
caching and proxy Web server, and the fastest Macintosh X server. Tenon is
dedicated to making the Macintosh a world-class networking platform. In
1997, they introduced WebTen, an Apache Web server for Power Mac. NetTen is
the second product offering in Tenon's suite of "Rhapsody-Ready" internet
applications. Tenon Intersystems can be reached in the US at 805-963-6983
or www.tenon.com.