The Exchange migration tool does not write to Exchange
IMail 2006.2 or later must be installed before installing the tool. It can be installed on the Exchange Server or on another machine in the same Active Directory Forest. You will need to run this as a Domain or Enterprise Admin. Exchange 2003 Server will require that this user be given Read permissions to the InfoStore.
The install instructions are as follows:
Please read the readme.htm for information about known issues. There is also a pdf file with usage instructions.