If you want to reestablish coexistence between Exchange 2000 and
Exchange 5.5, create a custom recipient on Exchange 5.5 for each
mailbox you migrated and deleted. Custom recipients appear in the
address book and can receive messages from users still on Exchange
You can create custom recipients either manually or
If you installed Active Directory Connector and suspended
replication before running Migration Wizard, now is the time to
resume replication. Active Directory Connector automatically
creates custom recipients for the migrated mailboxes.
You can manually create custom recipients on Exchange 5.5. For
information about creating custom recipients, see the Microsoft
Exchange 5.5 server documentation.