Apple School Manager User Guide
Your domain name has been reclaimed
The domain name you had has been reclaimed by another organisation, and the domain part (to the right of the @) in some of your user accounts has been automatically changed. For example, if you had an account with the username afrost@townshipschools.org.uk, that username was changed to afrost@townshipschoolsorguk1.appleid.com. Users who had their username changed still have access to all their content.
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