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Q181947: XCON: PRMD Value in Numeric-OR-Address Won’t Downgrade to 84

Article: Q181947
Product(s): Microsoft Exchange
Version(s): WINDOWS:4.0,5.0,5.5
Operating System(s): 
Keyword(s): kbusage
Last Modified: 02-APR-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 4.0, 5.0, 5.5 
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SYMPTOMS
========

When you send a message to an X.400 custom recipient over a 1984 mode X.400
Connector, the following non-delivery report (NDR) may be generated:

  Your message did not reach some or all of the intended recipients.

     Subject:   Test
     Sent:   1/1/80 1:00 AM

  The following recipient(s) could not be reached:

     User, Mail on 1/1/80 2:00 AM
     The recipient could not be transferred because it could not be
     downgraded MSEXCH:MSExchangeMTA:Sitename:SERVERNAME

Additionally, the following event will be generated in the Windows NT Application
Log:

  Event ID 175    MSExchangeMTA    X400 Service
  An error occurred while transferring message C=US;A=
  ;P=PRMD;L=SERVERNAME-971223150130Z-132, because per-receipt information
  could not be downgraded. An X.400 API Association (XAPIA) unable-to-
  transfer reason code and unable-to-downgrade diagnostic code were
  returned. [MTA DISP:FANOUT 12 147] (14)

CAUSE
=====

The custom recipient was created using a numeric-OR-address and also contains a
private management domain (PRMD) value. This prevents the X.400 address from
downgrading from the X.400 88 version to the 84 version. Consequently, the
message is rejected, an NDR is produced, and the above error is logged.

WORKAROUND
==========

To work around this problem, remove the PRMD value from the custom recipient
mail address. This allows the message to be properly downgraded from X.400 1988
mode to 1984.

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

This problem occurs when you send, over a 1984 mode X.400 Connector, a message
that is addressed to a recipient that contains both a numeric address, such as
X.121 or User Agent numeric ID, and a PRMD value.

In accordance with X.419 Annex B section B 2.8, a numeric-OR-address containing a
PRMD value cannot be downgraded from 1988 to 1984.

Additional query words: p2 p22 red book blue

======================================================================
Keywords          : kbusage 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2
Version           : WINDOWS:4.0,5.0,5.5
Issue type        : kbprb

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