DOCUMENT:Q241502  15-SEP-1999  [exchange]
TITLE   :XFOR: Misdirection of E-mail May Occur Under High Load
PRODUCT :Microsoft Exchange
PROD/VER:winnt:5.5,5.5 SP1,5.5 SP2,5.5 SP3
OPER/SYS:
KEYWORDS:exc55 exc55sp1 exc55sp2 exc55sp3

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The information in this article applies to:

 - Microsoft Exchange Server, versions 5.5, 5.5 SP1, 5.5 SP2, 5.5 SP3 
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SYMPTOMS
========

E-mail sent to the Internet (SMTP mail) is accidentally sent to the wrong
recipient.

CAUSE
=====

Under certain high-load situations VirusWall may mishandle an SMTP "reset"
command resulting in a misdirected e-mail message.

RESOLUTION
==========

To resolve this problem, update to the Trend Micro InterScan patch version 3.23.
The latest InterScan patches can be obtained from the Trend Micro Web site:

   http://www.antivirus.com/products/isvw/updates_patches.htm

STATUS
======

Trend Micro has confirmed this to be a problem in the InterScan VirusWall
product. Trend Micro has proactively placed an update patch that corrects this
problem on its Web site for customers to download.


MORE INFORMATION
================

For more information on how you can guard yourself from viruses by using the
Trend Micro InterScan VirusWall, please visit the following site:

   http://www.antivirus.com/products/isvw/default.htm

The third-party contact information included in this article is provided to help
you find the technical support you need. This contact information is subject to
change without notice. Microsoft in no way guarantees the accuracy of this
third-party contact information.
The third-party products discussed in this article are manufactured by vendors
independent of Microsoft; we make no warranty, implied or otherwise, regarding
these products' performance or reliability.

Additional query words:

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Keywords          : exc55 exc55sp1 exc55sp2 exc55sp3 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2 kbExchange550SP1 kbExchange550SP2 kbExchange550SP3
Version           : winnt:5.5,5.5 SP1,5.5 SP2,5.5 SP3
Issue type        : kbbug
Solution Type     : kbnofix

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Copyright Microsoft Corporation 1999.