OSI/MHS Orientation Guide

Building Your Message Handling System
OSI/MHS Orientation Guide—424829-001
1-27
Writing or Integrating a Remote User Agent With
Compaq OSI/MHS
1
Offered by Compaq technical support on an informal basis (as needed)
Writing or Integrating a Remote User Agent With
Compaq OSI/MHS
A remote user agent (RUA) is an application program, usually running on a
workstation, that submits and retrieves messages from a message handling system, on
behalf of a user, through an X.400 message store. OSI/MHS can provide the services of
a message store to existing RUAs. Also, you can write an RUA that connects to an
X.400 network through an OSI/MHS message store. RUAs are defined in the 1988
Recommendations but not in the 1984 Recommendations.
What You Need to Do
Figure 1-8 illustrates the relationship between an RUA and OSI/MHS. The RUA uses a
standard protocol called P7 to connect to a message store through a process called the
remote operations server (RS). Through the RUA, the user can submit a message to the
message store; later, an MTA reads the message and transmits it across the network.
Likewise, an MTA that receives a message for a message store user places it in the
message store. Later, the RUA can retrieve the message. Thus, a message store is an
alternative to direct interaction between a UA and an MTA.
Creating a Simple Message
Handling System
Tech Support How to set up a specific test/demonstra-
tion network
OSI/MHS Troubleshooting
Guide
Tech Support How to run special diagnostic software for
OSI/MHS
GPI Troubleshooting Guide Tech Support How to run special diagnostic software for
GPI
Table 1-6. Manuals and Media for Using the Gateway Programmatic
Interface (page 2 of 2)
Title
Subject
Area Contents