A signed or encrypted message that contains an attachment takes a long time to be delivered from a Windows 2000-based computer (827551)

CAUSE

DMS uses the XEXCH50 command to relay certain message properties, such as envelope, message, and recipient properties. The XEXCH50 command is a Microsoft Exchange extension that is supported by SMTP. An XEXCH50 command that has received a success type response is then followed by a binary large object (BLOB) of variable size.

This problem occurs because signed or encrypted messages that contain attachments that are larger than 500 KB create large BLOBs. These BLOBs block the SMTP route for a short time.

RESOLUTION

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 telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites

No prerequisites are required.

Restart requirement

You do not have to restart the computer after you apply this hotfix.

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
   --------------------------------------------------------------
   22-Aug-2003  10:32  5.0.2195.6808     322,320  Aqueue.dll       
   22-Aug-2003  10:32  5.0.2195.6808      67,856  Mailmsg.dll      
   22-Aug-2003  10:32  5.0.2195.6808      38,672  Ntfsdrv.dll      
   22-Aug-2003  10:32  5.0.2195.6810     444,688  Smtpsvc.dll

MORE INFORMATION

For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

824684 Description of the standard terminology that is used to describe Microsoft software updates