Exchange 2010 Mailbox Creation - Legacy Mailbox

Exchange 2010 Mailbox Creation - Legacy Mailbox

I'm currently evaluating ADManager Plus.  We already use ADAudit Plus and like that product.

I've created a custom template to create a user.  It seems to work ok with 1 exception.  When the Exchange mailbox is created in our Exchange 2010 environment, the mailbox shows up as a legacy mailbox rather than an Exchange 2010 mailbox.

The template has the server setting to automatic and the mailbox database automatic. 

Does anyone know why this occurs?

Thank you

Ted