Migrating to Exchange 2007 with correct permissions
I'm currently migrating from Exchange Server 2003 to 2007. Will I be able to migrate mailboxes with multiple users while keeping the correct permissions intact?
Assuming you're asking whether users with permissions to access a mailbox as a "secondary mailbox" will retain these rights following the migration, the short answer is yes.
However, you will need to test your migration tools and methodology against this scenario in a lab prior to performing the migration in production. There are many migration solutions on the market and each has its own nuances.
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This was first published in September 2009