Topic Last Modified: 2010-04-29

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager monitors the Windows Application log on computers running Exchange 2010 and generates this alert when the events specified in the following Details table are logged.

To learn more about this alert, in Operations Manager, do one or more of the following:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source


Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Mailbox/System Attendant

Rule Name

The e-mail address description object in the Microsoft Exchange directory is missing.


This Error event indicates that the Exchange e-mail address generator could not find the address type in the Address-Types container of Active Directory. All address types must be registered in Active Directory. You can find the Address-Types container in the Configuration context of Active Directory under Services/Microsoft Exchange/<Organization>/Addressing/Address-Types.

User Action

To resolve this error, follow one or more of these steps:

  • Use Active Directory Service Interfaces (ADSI) Edit or the LDIFDE utility to extract the list of address types from Active Directory. The following is an example ldifde command:

    Ldifde -f addressTypes.wri -d "cn=address-types,cn=addressing,cn=[first organization],cn=microsoft exchange,cn=services,cn=configuration,dc=contoso,dc=com", L cn,

    You must modify this example to reflect the first organization and Active Directory domain of your organization.
  • Examine the list of cn attributes for the type reported in the error.

    • If the address type reported in the error appears in the list, contact Microsoft Customer Support Services for help. For information about how to contact support, visit Microsoft Help and Support.

    • If the address type reported in the error does not appear in the list, examine your e-mail address policies for a policy that has the address type specified in the error. Then remove the invalid type from the e-mail address policy. E-mail address policies are located in the Exchange Management Console at Organization Configuration/Hub Transport/E-mail Address Policies tab

For more information, see the following resources:

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.