Registering Azure applications

To create an Azure application in Microsoft 365 for OAuth SMTP authentication for an Outbound/SMTP server profile or to integrate to for an Outbound/Microsoft365 server profile, perform the following steps.

Register application

First, register the application performing the following steps:

  1. Go to portal.azure.com and log in
  2. Among Azure services click on App registrations

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  1. On the App registrations page click New registration
    1. Give a name to this new Azure application
    2. Set the account type to Single tenant only
    3. Click Register to commence the registration
  1. You land on the page of the the newly created application
  2. Click Overview and take note of the following properties:
    1. Client ID
    2. Tenant ID
    3. Client secret (not existing yet, created in the next steps)

Create client secret

Create the client secret performing the following steps:

  1. Click on Add a certificate or secret

  1. Select Client secrets and click on New client secret
  1. Add a Description to the new secret and set the expiry
  2. Click Add to add the new secret to the application
  1. The value of the new client secret together with the client ID and the tenant ID will be used to configure oAuth or Graph API access in Email Gateway Security

Set application permissions

Click on Manage > API permissions. By default only the User.Read permission is set.

The following permissions still need to be added taking the next steps:

  1. In the Select an API dialog select Microsoft Graph

  1. In the Microsoft Graph dialog select Application permissions then add the following permissions (the filter can help in finding them):

    1. For OAuth authentication in an Outbound/SMTP server profile:

      1. Mail.ReadWrite

    2. For delivering emails through Graph API in an Outbound/Microsoft365 server profile:

      1. Group.Read.All
      2. GroupMember.Read.All
      3. Mail.ReadWrite
      4. User.Read.All
  1. These permissions may require admin consent so after selecting the permissions click on Grant admin consent for <tenant name>
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Registering Azure applicationsRegister applicationCreate client secretSet application permissions