E-mail messages that are sent from your Exchange Server 5.5 mailbox to a specific Exchange 2000 recipient in a different site are not delivered

When you send outgoing e-mail messages from a Microsoft Exchange Server 5.5 mailbox to a recipient whose mailbox is stored on a Microsoft Exchange 2000 Server computer in a different site, the e-mail messages are not delivered. You do not receive a non-delivery report (NDR), and you cannot locate the e-mail message in the message transfer agent (MTA) mail queues.

This problem occurs when the recipient has an X.400 proxy address that contains incomplete personal attributes. Specifically, this problem occurs when the X.400 proxy address contains personal attributes, such as a specific name or initials, but it does not include a surname. If the surname is missing from the X.400 proxy address where other personal attributes are provided, the X.400 proxy address is not valid. Exchange Server 5.5 cannot process e-mail messages to an address that is not valid. The Exchange Server 5.5 MTA should return the e-mail message to the sender as undeliverable, but it does not.

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Hotfix information

Prerequisites

To install this hotfix, you must be running Microsoft Exchange Server 5.5 Service Pack 4.

Restart requirement

You do not have to restart your computer after you apply this hotfix. However, the Microsoft Exchange System Attendant and all dependent services are automatically stopped and then restarted during the installation process.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

      
   Date         Time   Version         Size       File name
   -----------------------------------------------------------
   01-Aug-2001  18:02                     41,325  Dbserver.sch
   16-Sep-2002  16:49                     88,248  Dsadap.xv2
   16-Sep-2002  16:49                     33,049  Edi.xv2
   18-Aug-2003  21:33  5.5.2657.61     1,941,776  Emsmta.exe       
   18-Aug-2003  21:23  5.5.2657.61        69,904  Ems_rid.dll      
   13-Jun-2001  18:05                    133,435  Infoplog.cfg
   18-Aug-2003  21:23  5.5.2657.61        19,728  Maxapia.dll      
   18-Aug-2003  21:23  5.5.2657.61        12,048  Maxapiv1.dll     
   18-Aug-2003  21:35  5.5.2657.61       167,184  Mtacheck.exe     
   18-Aug-2003  21:23  5.5.2657.61       743,696  Mtamsg.dll       
   18-Aug-2003  21:23  5.5.2657.61        16,656  Mtaperf.dll      
   18-Aug-2003  21:23  5.5.2657.61        16,656  Mtxapia.dll      
   18-Aug-2003  21:23  5.5.2657.61        11,536  Mtxapiv1.dll     
   13-Jun-2001  18:06                     50,789  P2.xv2
   17-Sep-2001  19:45                     14,002  P42.tpl
   16-Sep-2002  16:49                     41,222  P772.tpl
   16-Sep-2002  16:49                      9,028  P772.xv2
   29-Aug-2001  19:16                     23,350  Rdi.xv2
   19-Aug-2003  20:55                    319,488  Uninst.exe       
   18-Aug-2003  21:23  5.5.2657.61       322,320  X400om.dll       
   18-Aug-2003  21:23  5.5.2657.61        40,208  X400omv1.dll     
   16-Sep-2002  16:49                     31,276  X500dap.tpl

To work around this problem, make sure that the there is a valid surname in the recipient's X.400 proxy address.

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

This hotfix may enable Exchange Server 5.5 to deliver the e-mail message to the recipient if the recipient is in the same Exchange organization. However, the hotfix does not resolve the problem in every case where the recipient's X.400 proxy address is missing personal attributes, such as a surname. This hotfix does enable Exchange Server 5.5 to generate an NDR if the e-mail message cannot be delivered within the organization, or if the recipient is outside the Exchange organization. We recommend that you correct the X.400 proxy address for each user who has personal attributes that are incomplete.

For additional information about Microsoft software updates, click the following article number to view the article in the Microsoft Knowledge Base: