IIS Admin Service Repeatedly Stops on an Exchange 2000 Server (819019)

CAUSE

This problem occurs because of an access violation in the Mailmsg object (part of the SMTP service). The Mailmsg object stops responding (crashes) because of a stack overflow that is caused by a corrupted message that cannot be processed.

When messages are received by the SMTP service, they are stored in the NTFS file system. During message processing, the message properties (for example, the From, To, Subject, IP Address, and Number of Recipients properties) are submitted as a set of Mailmsg properties that are then exposed to subsequent SMTP event sinks. The problem that is described in this article occurs when corruption is introduced in the message stream that causes the Mailmsg object internal structure size to be incorrect. This causes a stack overflow. Depending on the extent of the corruption, the stack may be overwritten, and then it stops responding (crash).

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

http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS

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

Microsoft Windows 2000 Service Pack 2 (SP2) or later must be installed on your computer before you install this hotfix. For additional information about how to obtain the latest Windows 2000 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

Restart Requirement

This hotfix automatically restarts the IIS Admin Service.

Hotfix Replacement Information

This hotfix does not replace any other hotfixes.

File Information

The English version of this fix has the file attributes (or later) 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
----------------------------------------------------------
11-Jun-2003  19:30  5.0.2195.6654     322,320  Aqueue.dll
11-Jun-2003  19:30  5.0.2195.6739      67,856  Mailmsg.dll
11-Jun-2003  19:30  5.0.2195.6662      38,672  Ntfsdrv.dll
11-Jun-2003  19:30  5.0.2195.6747     444,688  Smtpsvc.dll

MORE INFORMATION

When the messages are received by the SMTP service, they are stored in the NTFS. However, if the message is received from the Exchange Information Store service (Store.exe), the physical message may reside in the Messaging Database (MDB). The problem described in this article occurs because of NTFS file corruption or MDB file corruption. For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:

816915 New Naming Schema for Microsoft Windows Hotfix Packages