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The below restrictions are configuration is only applicable when configuring ResourceXpress for a Microsoft Graph integration. |
The permissions configured during the Azure App Registration for ResourceXpress will grant Read & Write permissions to all Resource Mailboxes in the tenant.
To further restrict access to a specific sub-set subset of mailboxes the below steps will be required.
Create a Mail-Enabled Security Group
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Configure a mail-enabled security group in the Exchange Admin Center.
Use Microsoft's guide for “Manage mail-enabled security groups”.
Add all resource mailboxes that will be used in ResourceXpress as members of
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this security group.
Create an ApplicationAccessPolicy (PowerShell)
The following step requires the Azure App Registration Client ID created here., see our guide on how to create this here,https://resourcexpress.atlassian.net/wiki/spaces/RSG/pages/1349091544/Graph+API+OAuth+2.0+Configuration+for+Office+365#Getting-the-Client-%26-Tenant-ID%E2%80%99s.
Connect to Exchange Online in PowerShell.
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See our guide which covers the initial connection process here, https://resourcexpress.atlassian.net/wiki/pages/resumedraft.action?draftId=106233906.
Copy and paste the below command. Replace <app-id> with the App Registration Client ID and replace <security group email> with the SMTP address of the mail-enabled security group created in the first step.
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New-ApplicationAccessPolicy -AppId <app-id> -PolicyScopeGroupId <security group email> -AccessRight RestrictAccess -Description "Restrict this app to members of distribution group ResourceXpress<security group Mailboxesname>." |
For further information and for details on testing this policy please see this linkMicrosoft guide for “Scoping application permissions to specific Exchange Online mailboxes”.