There
are no Microsoft tools that support the migration of mailboxes directly
from 5.5 to 2007. However, it is possible to migrate mailboxes to an
Exchange server running Exchange 2000 or 2003 and then move those over
to 2007.
The
simplest solution is to install an Exchange 2003 server in its own
organization, separate from the Exchange 5.5 organization. Use the
Migration Wizard and move the mailboxes to Exchange 2003.
After
completion, install Exchange 2007 into the same organization as the
Exchange 2003 and use the Move-Mailbox Wizard to move those same
mailboxes over to 2007.
Note
There
are third-party solutions that might be worth considering when
attempting a migration from 5.5 to 2007. For example, Quest Software (www.quest.com) has a Migration Manager that performs the Exchange 5.5 to 2007 migration. CommVault Systems (www.commvault.com)
offers an archiving tool called QiNetix, which can archive Exchange 5.5
content and restore it back to an Exchange 2007 server. Logically,
there are other tools to consider.
