DOCUMENT:Q281587  08-MAY-2002  [exchange]
TITLE   :XADM: Unwanted Address Space When Using a Site Connector
PRODUCT :Microsoft Exchange
PROD/VER::5.5
OPER/SYS:
KEYWORDS:exc55

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

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


SYMPTOMS
========

In the Exchange Server Administrator program, if you click to expand the
Configuration object, click to expand the Site Addressing object, and then click
the Routing tab, there may be an additional X.400 address space on the Routing
tab. This address space is displayed only if you are using the Site Connector to
link two Exchange Server sites together, and the sites are configured for
directory replication. This "unwanted" address space is not added to any
connectors in the Exchange Server organization.

If this address space is similar to the address space that is already defined for
the Exchange Server site, messages might loop between the sites.

CAUSE
=====

This problem can occur if a mailbox in one of the sites has an additional X.400
address defined on the mailbox. For example, in an Exchange Server organization
that contains sites A and B, a mailbox in site A typically has an X.400 address
that is similar to the following address:

   c=us;a= ;p=ExchOrg;o=SiteA;s=surname;g=given_name;

When this problem occurs, the mailbox has two X.400 addresses defined, which
might occur during a migration:

   c=us;a= ;p=ExchOrg;o=site_A;s=surname;g=givenname;
   c=us;a= ;p=oldsystem;o=oldorg;s=surname;g=givenname;

In site B, the connector to site A now has an extra address space defined for
c=us;a= ;p=oldsystem;o=oldorg. If an X.400 Connector is used to link these sites
together, this problem does not occur.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem. This fix may receive additional
testing at a later time, to further ensure product quality. Therefore, if you
are not severely affected by this problem, Microsoft recommends that you wait
for the next Microsoft Exchange Server version 5.5 service pack that contains
this fix.

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

   http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

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

Component: Message Transfer Agent

+---------------------------+
| File name   | Version     | 
+---------------------------+
| Ems_rid.dll | 6.0.2654.00 | 
+---------------------------+



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
version 5.5.

Additional query words: MTA

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

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

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2002.