We are running GW 8.0.2 on a Windows 2008r22 cluster. The server sits in the DMZ. A rule here as that no servers in the DMZ are allowed to be part of the main Windows domain of the company. Since clustering requires a domain controller we had to install our GWIA into its own Windows domain. My question is how will the following tid affect the server if we change the primay suffix of this computer as recommended by the tid.

"450 Host Down" errors GWIA on Windows 2008
This document (7005218) is provided subject to the disclaimer at the end of this document.
Microsoft Windows Server 2008
Novell GroupWise 8
Novell GroupWise 8 Internet Agent
When sending an outbound email with GWIA running on Windows 2008 Server, GWIA does not resolve DNS correctly and immediately shows a "450 Host Down" error (for the domain name of the recipient) when trying to send the message.

In Diag log mode, GWIA also shows a "No MX records found" error for each outbound message.
Right-click My Computer
Go To Properties
Click on Change settings > Change
Go to the More tab then put the email domain name (such as "novell.com") in the "Primary DNS suffix of this computer" box.

Document ID:7005218
Creation Date:01-25-2010
Modified Date:01-25-2011
Novell Product:GroupWise

The Origin of this information may be internal or external to Novell. Novell makes all reasonable efforts to verify this information. However, the information provided in this document is for your information only. Novell makes no explicit or implied claims to the validity of this information.
Any trademarks referenced in this document are the property of their respective owners. Consult your product manuals for complete trademark information.