Event ID - 9157

Event Id9157
SourceMSExchnageSA
DescriptionMicrosoft Exchange System Attendant does not have sufficient rights to read Exchange configuration objectsin Active Directory. Wait for replication to complete and then check to make sure the computer account is a memberof the "Exchange Domain Servers" security group.
Event InformationAccording to Microsoft :
CAUSE :

These problems may occur when the following conditions are true:
• You install the original release version of Microsoft Windows 2000 on a Microsoft Windows NT 4.0 domain controller.
• A DNS suffix is defined in the Network control panel item of the domain controller.
When you install Windows 2000, the Windows 2000 Setup program automatically unchecks the Change primary DNS suffix when domain membership changes check box. Setup also sets the primary DNS suffix to the first suffix that is listed in the Network control panel item. After Active Directory is installed on a member server, the new domain controller tries to resolve the DNS records in the DNS zone that matches its primary DNS suffix.

This problem does not occur if one or more of the following conditions are true:• The Windows NT 4.0 domain controller does not have a DNS suffix defined before the upgrade.
• You upgrade the Windows NT 4.0 domain controller to Windows 2000 with Service Pack 1 (SP1) or a later service pack.
• You upgrade the Windows NT 4.0 domain controller to Microsoft Windows Server 2003. If DNS is correctly configured, Windows 2000 and Windows Server 2003 both support a disjoint namespace as a valid configuration. However, this configuration is frequently unintentional.

RESOLUTION

To resolve this problem, upgrade the domain controller to Windows 2000 with the latest service pack or to Windows Server 2003. For more information about how to obtain the latest Windows 2000 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
60910 (http://support.microsoft.com/kb/260910/) How to obtain the latest Windows 2000 service pack Alternatively, use one of the following methods:

Method 1
1. When you upgrade your computer to Windows 2000, quit the Active Directory Installation Wizard as soon as it starts
.2. Click to select the Change primary DNS suffi
Reference LinksMore Information

The computer account for Exchange Server is absent

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