You can manually remove Exchange attributes from Exchange
recipient objects. You need to remove these attributes only if one
of the following circumstances occurs:
You perform a disaster recovery to a server, and you cannot
reconnect Exchange mailboxes to existing Active Directory objects.
More information on this topic can be found in
You use Active Directory Connector (ADC), and you notice that
some of your Exchange attributes are being improperly matched with
your Active Directory user objects. More information on this topic
can be found in common issues.
not attempt to remove Exchange attributes until you have discussed
the need to perform this procedure with Microsoft Product Support.
For the most up-to-date information about how to remove Exchange
attributes, see the Microsoft
Knowledge Base .
To remove Exchange attributes from recipient objects: