I need to migrate number of mailboxes (20 to 25 only) from one of our sister companies (test.com) belongs to exchange 2010 into our internal domain (internaldomain.com) in exchange 2010. We are not intended to establish trust between two domains (test.com) and (internaldomain.com). Just intend to migrate their mailboxes from test.com to internaldomain.com but once the migration will be performed then users from test.com will be using their email address/mailboxes sitting in my exchange servers (internaldomain.com)
1. Need to migrate 25 users from test.com to internaldomain.com
2. Users from test.com will use my exchange servers (internaldomain.com) but their email address and mailboxes will be test.com
Need guideline what could be the migration steps I will have to consider. (MX record pointer change, mailbox export etc). Would you kindly assist to know the steps or any appropriate link that might help me!!