X400: Message Not Delivered and Screen Becomes Corrupted

ID: Q194385

The information in this article applies to:

Microsoft Mail Gateway to X.400, version 3.2

SYMPTOMS

When you attempt to send a message using X.25 from a foreign system to Microsoft Mail for PC Networks through the Microsoft Mail Gateway to X.400, the message may not be delivered successfully, the screen on the Microsoft Mail Gateway to X.400 computer may become corrupted, and the X.400 log file may contain entries similar to the following:

09:40:06 Message file name: 00002523

09:40:09 ERROR 3 (RTS): Association aborted

09:40:09 Outgoing AB SPDU on connection 0: xm[ 5] 19031101 03

09:40:09 Incoming AE SPDU on connection 0: rv[ 5] 29032A01 31

09:40:09 ERROR 1 (RTS): protocol error occurred in state 8

09:40:09 ERROR 3 (RTS): Association aborted

09:40:13 Outgoing AB SPDU on Connection 0: xm[ 12] 190A1101 03C10531 03800104

CAUSE

This problem can occur when a single transport service data unit (TSDU) contains a category 0 session protocol data unit (SPDU) and a category 2 SPDU that are not in the same transport protocol data unit (TPDU), and the second SPDU is the data SPDU (DT SPDU). Under these conditions, the remainder of the message may be processed before a TPDU with the EOT flag set is encountered. This may cause the Microsoft Mail Gateway to X.400 to overwrite a portion of the buffer that is used to combine the SPDUs. Then, when the Microsoft Mail Gateway to X.400 attempts to decode the buffer, it is unable to do so and therefore is unable to send the message.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but has not been fully regression tested and should be applied only to systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://support.microsoft.com/support/supportnet/default.asp

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


   File Name      Version
   ----------------------
   X400gate.exe   3.2.20

This hotfix has been posted to the following Internet location as X400gy2k.exe:

ftp://ftp.microsoft.com/bussys/mail/pcmail-public/all-y2k/

STATUS

Microsoft has confirmed this to be a problem in Microsoft Mail Gateway to X.400 version 3.2.

MORE INFORMATION

Category 0 SPDUs include "give token" and "please token." Category 2 SPDUs include "activity end" and "activity end acknowledge (AEA)."

Additional query words: openpath

Keywords : MailGWX400
Version : MS-DOS:3.2
Platform : MS-DOS
Issue type : kbbug