This article was previously published under Q294322
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When the Active Directory Connector (ADC) replicates to and from Microsoft Exchange Server 5.5 and Microsoft Windows 2000 Advanced Server Active Directory, the ADC may delete a mailbox from the Exchange Server 5.5 directory and replace that mailbox with a custom recipient, even if deletions are disabled.
This problem occurs when you match an Exchange Server 5.5 mailbox to a Windows 2000 Active Directory user and then remove all of the mail attributes from the Active Directory user.
This problem occurs because the ADC detects the match between the mailbox and Active Directory user when the ADC starts, and the ADC adds several attributes to the Active Directory user. Then the ADC tries to replicate from Exchange Server. Because only a few attributes have been added to the Active Directory user, the ADC removes the mailbox and creates a custom recipient in the mailbox's place.
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack
The English version of this fix should have the following file attributes or later:
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 2.