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Q235219: XADM: Too Many Consecutive CRLFs Truncate Message

Article: Q235219
Product(s): Microsoft Exchange
Version(s): winnt:5.5
Operating System(s): 
Keyword(s): exc55 EXC55SP3Fix
Last Modified: 30-SEP-1999

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Exchange Server, version 5.5 
-------------------------------------------------------------------------------


SYMPTOMS
========

If the IMS receives an inbound SMTP message that includes a large number of
consecutive carriage-return line-feed (CRLF) characters in Japanese encoding,
the message may be truncated at the CRLF characters, or the Information Store
may stop responding. If the message is very large, stack overflow occurs and the
Information Store stops responding.

CAUSE
=====

When a whole series of CRLF characters are copied at one time, the operation
will fail if the CRLF characters do not fit in the output buffer. On the other
hand, if the free space in the output buffer exceeds the margin (256 bytes), the
buffer is not reallocated. This problem always occurs when the series of CRLF
characters exceeds the buffer size (4096 bytes = 2048 CRLF pairs), and in
certain circumstances, it may occur with as little as 128 CRLF pairs, or with
any number in between.

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

The English version of this fix should have the following file attributes or
later:

Component: Information Store

+-------------------------+
| File name  | Version    | 
+-------------------------+
| Gapi32.dll | 5.5.2637.0 | 
+-------------------------+
| Mdbmsg.dll | 5.5.2637.0 | 
+-------------------------+
| Netif.dll  | 5.5.2637.0 | 
+-------------------------+
| Store.exe  | 5.5.2637.0 | 
+-------------------------+

Component: Directory

+--------------------------+
| File name   | Version    | 
+--------------------------+
| Dsamain.exe | 5.5.2600.0 | 
+--------------------------+


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.

Additional query words: internet

======================================================================
Keywords          : exc55 EXC55SP3Fix 
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2
Version           : winnt:5.5
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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