FOR IMMEDIATE RELEASE

Contact: Charles McHenry
541-772-2382
cmchenry@opendoor.com

OPEN DOOR NETWORKS ANNOUNCES THE MAILDOOR MULTI-DOMAIN MAIL CLERK

EXPANDS ITS MULTI-DOMAIN PRODUCT LINE

ASHLAND, OR. — October 22, 1996 — Open Door Networks, Inc. today
announced MailDoor(TM), another in its suite of multi-domain products for
Macintosh Internet servers. MailDoor, a powerful multi-domain mail clerk,
works with the Apple Internet Mail Server (AIMS) to offer server
administrators the ability to create and manage independent sets of e-mail
addresses within each AIMS mail domain. Together with Open Door’s HomeDoor
and LogDoor products, MailDoor enables Webmasters to offer users a complete
set of multi-domain services — all through a single Macintosh computer.

As shipped from Apple Computer, AIMS does not provide the ability to set up
independent e-mail accounts with the same account name. This limitation is
most serious when it comes to setting up e-mail addresses like the
“Webmaster” address on a server supporting multiple domains. Although each
domain can have its own set of home pages (courtesy of HomeDoor), without
MailDoor, e-mail sent to the “Webmaster” address at any of these domains
would all go to the same AIMS account. MailDoor works with AIMS to sort
such mail by domain name, and then to forward each piece of mail to the
e-mail address of the Webmaster for the intended domain. MailDoor enables
any e-mail address (for instance “Info” or “Sales”) to be “multiplexed” in
this fashion.

MailDoor is part of Open Door Networks’ multi-domain product line, which
enables a Macintosh Webmaster to turn a single Macintosh Web server into a
large number of what appear to be independent servers. HomeDoor enables
the Webmaster to create up to 256 independent “sites” on the server, each
with its own domain name and associated home page. LogDoor enables the
Webmaster to provide each of those sites with its own real-time log file
and set of Web-accessible access statistics. And now, with MailDoor, the
Webmaster can also provide each of those sites with a set of independent
e-mail addresses.

Open Door Networks expects to make evaluation copies of the beta version of
MailDoor freely available through its Web site at
http://www.opendoor.com/maildoor/ within the next two weeks. Open Door
anticipates that MailDoor will be shipping by December 1, 1996. The
product will be distributed directly off Open Door’s Web site, at a special
introductory price of $99. The introductory price is expected to be valid
until January 1, 1997. After that time, MailDoor’s retail price is
expected to be $139.

MailDoor should run on any Macintosh with System 7.5 or later and should
require a minimum of 512KB of RAM. MailDoor version 1.0 will require
version 1.1.1 of AIMS. All of the details of MailDoor, including a draft
of the MailDoor Users’ Guide, are available on the MailDoor Web pages.

Open Door Networks, Inc., a pioneer in the field of Web publishing for
Macintosh computers, was founded in January, 1995 by Alan Oppenheimer, an
11-year Apple veteran and co-creator of the AppleTalk network system. Open
Door’s mission is to provide Macintosh users with Internet solutions that
are as easy-to-use and as powerful as the Macintosh itself. Open Door
Networks is located in Ashland, Oregon.

MailDoor, HomeDoor and LogDoor are trademarks of Open Door Networks, Inc.
All other trademarks are owned by their respective companies.