Can I manage Microsoft Exchange 5.5 and Exchange 2000/2003 simultaneously with Directory and Resource Administrator?
Can I simultaneously enable multiple Microsoft Exchange environments in Directory and Resource Administrator?
Directory and Resource Administrator 7.x
Microsoft Exchange Server 5.5
Microsoft Exchange Server 2000
Microsoft Exchange Server 2003
Yes. Directory and Resource Administrator (DRA) allows for the simultaneous management of Microsoft Exchange 5.5 and Microsoft Exchange 2000/2003 organizations. However, since DRA cannot create Exchange 5.5 mailboxes, any new mailboxes created or cloned in an Exchange 5.5 environment are created as Exchange 2000/2003 mailboxes. If you enable support for both Exchange 5.5 and Exchange 2000/2003, install the Exchange 2003 support tools with Exchange 5.5 support enabled on the DRA servers.
For more information about enabling Microsoft Exchange 5.5 and Exchange 2000/2003 Mailbox support in DRA, see the following articles: