Microsoft KB Archive/221302

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The information in this article applies to:


 * Microsoft Exchange Server, version 5.5

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SYMPTOMS
When using Distributed Password Authentication (DPA) as authentication method, Delegate access functionality does not work correctly.

Steps to Reproduce the Problem

 * 1) Assign User1 delegate access for User2.
 * 2) Log on as User2 using DPA as the authentication method.
 * 3) User2 is unable to open User1's folders.

The above problem does not occur when NTLM is used as authentication method.

CAUSE
The main difference between NT and Membership security is that with Membership, one Windows NT account, the "broker," is mapped to all the Exchange mailboxes. So, if the broker account is given rights to the folders, then all users (using DPA authentication) can open the folder regardless of the permission.

RESOLUTION
A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next Microsoft Exchange Server version 5.5 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:

Component: Information Store

Component: Client

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, and if it is determined that you only require the fix you requested, no fee will be charged. However, if you request additional technical support, and if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support, you may be charged a non-refundable fee.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:

"Q154871 Determining If You Are Eligible for No-Charge Technical Support"

STATUS
Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5.

Additional query words: DPA Delegate Membership folder permission

Keywords         : Version          : winnt:5.5 Platform         : winnt Issue type       : kbbug Last Reviewed: June 28, 1999