Active Directory schema attributes are cleared after you disable a user’s mailbox in an Exchange Server 2010 environment

Symptoms

Consider the following scenario:

A user is in a Microsoft Exchange Server 2010 environment.
The user has certain phonetic attributes that begin with msDS-Phonetic in Active Directory schema attributes.
You disable the user’s mailbox.

In this scenario, the following phonetic attributes are cleared unexpectedly:

This issue occurs because the Exchange Server 2010 server incorrectly clears these attributes when it disables the user’s mailbox.

To resolve this issue, install the following update rollup:

2645995 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 2

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about the msDS-PhoneticCompanyName attribute, visit the following Microsoft website:

For more information about the msDS-PhoneticFirstName attribute, visit the following Microsoft website:

For more information about the msDS-PhoneticDepartment attribute, visit the following Microsoft website:

For more information about the msDS-PhoneticLastName attribute, visit the following Microsoft website:

For more information about the Active Directory schema changes, visit the following Microsoft website:

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