Professional Windows® PowerShell for Exchange Server 2007 Service Pack 1

Chapter 4: Working with User and Group Objects

103

Mail - Enabled Nonuniversal Groups

These are Active Directory local or global Security or Distribution Group objects. Use of these groups for

email distribution is greatly de - emphasized in Exchange Server 2007 because unpredictable group

membership expansion could result. Hence, these groups cannot be created from the Exchange

Management Console. Organizations migrating to or coexisting with Exchange Server 2007 may have

these groups already in Active Directory. Using the

Set-Group cmdlet, these groups can be converted to

either mail - enabled universal Distribution or Security Groups. In a native Exchange Server 2007

environment, you cannot create a mail - enabled nonuniversal group using the Active Directory Users and

Computers as is the case in an Exchange Server 2000/2003 or a mixed Exchange Server 2000/2003/2007

environment. Figure 4 - 19 shows mail nonuniversal groups in the forest.

Figure 4-18

Figure 4-19

Dynamic Distribution Groups

In Exchange Server 2000/2003, this group type was commonly referred to as Query Based Distribution

Groups (QDG). Used to ease the administrator ’ s burden of manually adding Recipients to

Distribution Groups, a Dynamic Distribution Group ’ s membership is based upon a preset Recipient

filter and calculated each time a message is sent to this group. Group membership can include all

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