Novell GROUPWISE 8 - DOMAINS, Manual, Page: 32 / 44

148 GroupWise 8 Administration Guide
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Figure 10-5
Ring Configuration with Direct Links to Neighboring Domain and Indirect Links to All Other Domains
An advantage of the two-way ring configuration is that it has no single point of failure. A
disadvantage is that, depending on the size of the system, a message might go through several
domains before arriving at its destination. A two-way ring works well in a system with five domains
or less because transferring a message never requires more than two hops.
Combination Configuration
These three basic link configurations can be combined in any way to meet the needs of your
GroupWise system.
Gateway Links
In a gateway link between domains, the sending domain’s MTA must route the message through a
gateway to reach its destination. Gateways can be used to:
Š
Link domains within your GroupWise system. See “Using Gateway Links between Domains”
on page 636 .
Š
Link your GroupWise system to another GroupWise system through an external domain. See
“
Using Direct Links ” in “ Connecting to Other GroupWise Systems ” in the GroupWise 8 Multi-
System Administration Guide
Š
Link your GroupWise system to a different e-mail system through a non-GroupWise domain.
See “
Connecting to Non-GroupWise Messaging Systems ” in the GroupWise 8 Multi-System
Administration Guide .
For more information, see the GroupWise Gateways Documentation Web site (http://
www.novell.com/documentation/gwgateways) .
You cannot locate a post office across a gateway link from its domain. This precludes locating a post
office across a modem connection.
10.1.2 Domain-to-Post Office Links
Between a domain and its post offices, all links must be direct links. There are no alternative link
types between a domain and its post offices.
Domain 2 Domain 5
Domain 1
Domain 3 Domain 4