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MTA writes message files into the destination domain MTA input queue, which does require disk
access by the source MTA in the destination domain. For additional details about the configuration
options for direct links, see
Section 10.1.3, “Link Protocols for Direct Links,” on page 149
.
Figure 10-1
Direct Link between Domain A and Domain B
Direct links can be used between all domains. This is a very efficient configuration but might not be
practical in a large system.
Figure 10-2
Direct Links to All Domains
Indirect Links
In an indirect link between domains, the source domain’s MTA routes messages through one or
more intermediate MTAs in other domains to reach the destination domain’s MTA. In other words,
an indirect link is a series of two or more direct links. In large systems, direct links between each
pair of domains might be impractical, so indirect links can be common. A variety of indirect link
configurations are possible, including:
“Simple Indirect Links” on page 146
“Star Configuration” on page 147
“Two-Way Ring Configuration” on page 147
“Combination Configuration” on page 148
Properly configured links optimize message flow throughout your GroupWise system.
Simple Indirect Links
In simplest form, an indirect link can be used to pass messages between two domains that are not
directly linked.
Domain A
Domain B
UNC Path
Mapped Drive
TCP/IP
Domain 2
Domain 5
Domain 1
Domain 3
Domain 4
