XADM: Non-Delivery Receipts Fail Due to Error 0xfffff9bf

• Microsoft Exchange Server, version 5.5

SYMPTOMS

When a user requests a delivery receipt on behalf of a mailbox on another server to which they have been granted delegate rights, the delivery report is not received and the following error is visible in the Windows NT Event Viewer Application log without enabling additional logging on the Microsoft Exchange Information Store:

Event ID: 2006
Source: MSExchangeIS Private
Category: Transport Sending
Description: The generation of a delivery report or a non-delivery report
has failed due to error 0xfffff9bf.

CAUSE

Delivery receipt requests were not being properly routed to the Message Transfer Agent (MTA) to be delivered to the mailbox requesting the delivery receipt.

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the Microsoft Knowledge Base:

Q191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.

MORE INFORMATION

This fix is based upon the Windows NT logon of individual mailboxes and only works if separate Windows NT account are used in conjunction with the mailbox and the mailbox granted delegate rights.

The symptoms listed above is one condition where a 2006 Event may be logged. There may be other conditions where a 2006 Event ID may be logged. If, after you obtain this fix, the 2006 Events continue, please contact Microsoft Product Support Services to help diagnose the problem.

Additional query words:

Keywords : exc55 EXC55SP3Fix
Version : winnt:5.5
Platform : winnt
Issue type : kbbug