OAuth2 access to shared mailbox

lalajee 1,821 Reputation points
2022-07-08T14:40:33.25+00:00

Hi,

We have requirement from 3rd party to access an shared mailbox on our tenant.

I have register App and given following API Permission

full_access_as_app
MailboxSettings.Read

218889-image.png

My issue is that I only want to give this app an access to Shared Mailbox 1, i dont want this app to use to access any other mailbox on our tenant, how do I limit this app to only access shared mailbox 1

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A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
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Exchange | Exchange Server | Management
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
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Answer accepted by question author
  1. Andy David - MVP 159.7K Reputation points MVP Volunteer Moderator
    2022-07-08T15:02:39.847+00:00

    use an access app policy to limit to a specific mailbox:

    https://learn.microsoft.com/en-us/graph/auth-limit-mailbox-access

    219002-image.png

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