OSI/MHS Orientation Guide

Building Your Message Handling System
OSI/MHS Orientation Guide—424829-001
1-6
Tasks Described in This Section
includes an X.400 gateway for integration with OSI/MHS and a gateway for
exchange of messages with UNIX SMTP mail systems.
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Various third parties, notably Compaq Alliance partners, offer other messaging
products—for instance, X.400 UAs, EDI solutions, gateways, and management
tools—for use on Compaq NonStop systems. In addition, a third-party solution is
available for X.400 on Integrity Series (NonStop-UX) systems. For information
about third-party offerings, contact your Compaq field representative.
This section focuses on the OSI/MHS product family and Compaq NonStop systems.
For information about X.400 on Integrity Series systems, see Section 2.
Tasks Described in This Section
This manual discusses some of the most common tasks involved in building a
messaging system or application. In all these cases, Compaq products provide the
X.400 and underlying OSI services. Task descriptions begin on the next page.
Scan the following list of tasks; the numbers in the list correspond to those in
Figure 1-3, and to the order in which the tasks are described in this section:
1. Setting Up a Backbone Messaging Network or Messaging Hub. One or more
NonStop systems can provide an X.400 service to other users and support
connection to other prominent X.400 services.
2. Integrating a Compaq Transfer Application With an X.400 Network. Transfer is
the Compaq proprietary messaging system. You can easily link users of a Transfer
application, such as electronic mail (PS Mail), with other users on an X.400
network.
3. Integrating Another X.400 Messaging System or Gateway With an X.400
Network. Some software vendors provide messaging systems and applications
(such as LAN electronic-mail systems) with X.400 gateways. You can use a variety
of management tools to include such systems and gateways in your configuration.
4. Integrating Your Own Messaging System With an X.400 Network. To allow your
private messaging system or applications to communicate across an X.400 network,
you create your own X.400 gateway, using a standard (XAPIA) interface.
5. Writing and Integrating a Remote User Agent. A remote user agent (RUA)
running elsewhere in an OSI network—typically, on a workstation on a local area
network—can submit and retrieve messages through an X.400 message store, using
OSI/MHS.
6. Writing and Integrating a Local User Agent. A local user agent (LUA) running on
a NonStop system can submit and retrieve messages through a local X.400 message
store, using OSI/MHS.
7. Integrating a Directory Service You can integrate OSI/MHS with an X.500
directory service such as Compaq NSDS. NSDS provides access to a distributed
database that can store a variety of information, including X.400 addresses. Access
to the distributed database, or X.500 directory, gives your messaging system greater
capacity for internetworking.