We are currently running Exchange 2003 within our AD forest. For the move to Exchange 2010, we're planning on building a new AD forest, this will give us the ideal opportunity to start afresh and keep things standardised etc.
Does anyone know of any native MS tools to migrate mailboxes from one Exchange org (2003) to another (2010)? I know there is the ADMT, but I believe that is for AD accounts only? Or am I mistaken?