OSI/MHS Configuration and Management Manual

Introduction to OSI/MHS
OSI/MHS Configuration and Management Manual—424827-003
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Roles of OSI/MHS
In Figure 1-4, if MTA 3 wants to send a message to MTA 4, the message must go
though MTA 1, which is the OSI/MHS subsystem. In this example, OSI/MHS relays
messages between other MTAs.
Using OSI/MHS as a Gateway
OSI/MHS can act as a gateway between Transfer applications, such as PS Mail, and
the X.400 network. OSI/MHS can also act as a gateway between users of a proprietary
system and the X.400 network. Figure 1-5 shows these implementations.
Figure 1-4. Adjacent MTA Message Transfer
005VST .VS D
MTA 2 MTA 4
NonStop System
MTA 3
MTA 1
OSI/MHS