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Active Directory Schema Changes (SP3)

Applies to: Exchange Server 2007 SP3

Topic Last Modified: 2011-03-16

Microsoft Exchange Server adds new exADNoMk schema classes and attributes, and modifies new ones. This topic provides a summary of the Active Directory schema changes that are made when you install Microsoft Exchange 2007 Service Pack 3 (SP3). Refer to the .ldf files for more information about the changes to the Active Directory schema. The .ldf files are located in the \AMD64\Setup\Data\ folder on the Setup media.

This topic includes the following sections:

Classes Modified by Exchange 2007 SP3
Attributes Modified by Exchange 2007
Classes Added by Exchange 2007 SP3

Classes Modified by Exchange 2007 SP3

The following table lists the class modifications that Exchange 2007 SP3 makes to the Active Directory schema.

Class	Change	Attribute/Class
msExchSMTPExtendedProtectionPolicy	add:mayContain	ms-Exch-Smtp-Receive-Connector
msExchPopImapExtendedProtectionPolicy	add:mayContain	ms-Exch-Protocol-Cfg-Imap-Server
msExchExtendedProtectionSPNList	add:mayContain	ms-Exch-Protocol-Cfg-Pop-Server
msExchPopImapExtendedProtectionPolicy	add:mayContain	ms-Exch-Protocol-Cfg-Pop-Server
msExchExtendedProtectionSPNList	add:mayContain	ms-Exch-Protocol-Cfg-Imap-Server
msExchExtendedProtectionSPNList	add:mayContain	ms-Exch-Smtp-Receive-Connector

Attributes Modified by Exchange 2007 SP3

The following table lists the attribute modifications that Exchange 2007 SP3 makes to the Active Directory schema.

Attribute	Change	Value
ms-Exch-UM-Enabled-Text	rangeUpper	4096
ms-Exch-UM-Fax-Message-Text	rangeUpper	4096
ms-Exch-UM-Reset-PIN-Text	rangeUpper	4096
ms-Exch-UM-Voice-Mail-Text	rangeUpper	4096
ms-Exch-UM-Protected-Voice-Mail-Text	rangeUpper	4096
ms-Exch-SMTP-Extended-Protection-Policy	rangeUpper	1024
msExchPopImapExtendedProtectionPolicy	rangeUpper	1024
msExchExtendedProtectionSPNList	rangeUpper	1024

Comments about Modified Attributes

Exchange 2007 Service Pack 2 (SP2) sets these attribute values to 1,024 bytes. However, this size may be insufficient in an environment in which a disclaimer is included together with every voice mail message or fax message. To address this issue, Exchange 2007 SP3 increases the upper limit of these attributes to 4,096 bytes.

Classes Added by Exchange 2007 SP3

The following classes are added when you install Exchange 2007 SP3:

ms-Exch-SMTP-Extended-Protection-Policy
msExchPopImapExtendedProtectionPolicy
msExchExtendedProtectionSPNList

To ensure that you are reading the most up-to-date information and to find additional Exchange Server 2007 documentation, visit the Exchange Server TechCenter.

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