Article ID: 555197 - Last Review: February 15, 2005 - Revision: 1.0

NDR Message appear after reply to old email after mailbox migration

Author: Yuval Sinay MVP

View products that this article applies to.

SYMPTOMS

After mailbox migration from one Exchange organization by using Exchange migration tool or Exchange merge utility, users that try
to reply to old email or send an update to a meeting to the recreated Mailbox, get an NDR.

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CAUSE

The routing of mail in Exchange recipients is done with the legacyExchangeDN attribute, and the legacyExchangeDN attribute is changed when you recreate the mailbox.

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RESOLUTION

In order to avoid that issue, export the legacyExchangeDN attribute before you delete the mailbox and add it as a Custom X500 Address.

If you already deleted the mailbox, you should be able to view the legacyExchangeDN when you click the recipient in an old email item
Select properties on the user name from an old email, all the field are blank besides the Display Name field that is populated the
legacyExchangeDN of the mailbox.

If you are using Exchange 2000 Migration tool, a new hotfix is available from Microsoft for this issue:

In-Reply-To fields are lost when you move a mailbox in Exchange 2000 Server

http://support.microsoft.com/default.aspx?scid=kb;EN-US;891121

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MORE INFORMATION

Support WebCast: Exchange 2000 Server: Message Categorizer and NDR Troubleshooting
http://support.microsoft.com/default.aspx?kbid=329137

XADM: Workarounds for Problems with Mbconn.exe
http://support.microsoft.com/default.aspx?scid=kb;en-us;301585

Using LDIFDE to Import and Export Directory Objects to Active Directory
http://support.microsoft.com/default.aspx?kbid=237677

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APPLIES TO

Microsoft Exchange 2000 Enterprise Server
Microsoft Exchange 2000 Server Standard Edition

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kbpubtypecca kbpubmvp kbhowto KB555197

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