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2. step by step instructions
2.1. 2.1 Azure Active Directory
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Office 365 Exchange Online
These restricted rights may also be sufficient:
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Copy and save value (required for stanoc configuration)
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2.2. 2.2 Restricting the app's access to certain mailboxes
Via Powershell: Exchange Online Management Module https://learn.microsoft.com/en-us/powershell/module/exchange/new-applicationaccesspolicy?view=exchange-ps&preserve-view=true#example-2
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