MSExchangeSA Event ID 2035 - missing address type X500

I recently used exmerge to import mailboxes from an external hosted Exchange 2003 service to our new internal Exchange 2003 server.  The two Exchange servers are in different AD forests.

In order to allow users to reply to migrated email messages, I added a custom X500 address to each recipient with the information from the external hosted Exchange server.  The legacyExchangeDN value for each recipient points to the local Exchange server.

The following error message is appearing in the application log, and replies to migrated messages are failing with a NDR.

Event Type:      Error
Event Source:      MSExchangeSA
Event Category:      General
Event ID:      2035
Date:            11/11/2008
Time:            8:21:57 PM
User:            N/A
Computer:      EXCHANGE
The e-mail address description object in the Microsoft Exchange directory for the 'X500' address type on 'i386' machines is missing.

I checked the recipient address templates in System Manager and there is no entry for X.500.  

How do I enable Exchange 2003 sp2 to recognize and generate X.500 addresses?

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zmagickAuthor Commented:
I have looked at those KBs, but I don't know where to obtain the appropriate DLL for X500 address generation.  
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zmagickAuthor Commented:
I tried adding X500 on the custom tab of admodify v2.1, but it failed with the error:

ADMODIFY.ERR - The specified directory service attribute or value does not exist. (Exception from HRESULT: 0x8007200A).

The Exchange server is not recognizing X500 as a valid address type.   (I tried X.500 as well, same result).

This is all I got.. I hope this works for you..
zmagickAuthor Commented:
Thanks, but no luck.  I even tried downloading the older v1.6 of Admodify (the one that still explicitly lists X.500).  It added the X500 address to the recipient, but the reply still gets an NDR.  The issue doesn't seem to be adding the X500 custom addresses to the recipients, but getting Exchange 2003 to recognize X500 as a valid address format.
zmagickAuthor Commented:
I paid MS support and they did a remote session. The issue turned out to be badly formatted X500 addresses. The hosting company sent an export of X500 addresses in the format of:


When it should have been:

The lack of the "cn=" in front of the recipients container and alias was causing the error.
The 2035 event ID was misleading in that it implied Exchange didn't understand what X500 was, when in fact it didn't understand the format of the X500 that had been entered.


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zmagickAuthor Commented:
Sorry, that should be ou=administrative group name and not ou=server in the above example.
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Windows Server 2003

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