Setting up Oauth SMTP Entra
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Log in to your Entra portal
In the Applications > Application registration > new application menu
Enter an application name, then in URI redirection, enter web.
Retrieve the GLPI redirection URL available in configuration > notifications > configuration of email notifications. In way of sending emails, select SMTP+OAUTH.
You will see the redirection URL in the new menu that appears. Copy it and paste it into the redirection URI of your Entra application.
Click on Save.
Now go to certificate and secret.
Click on new client secret.
Enter a name and an expiry date.
Then click on add
Once validated, the secret value appears.
The addition of claims is necessary so that GLPI can use the SMTP service via the Entra application.
In the claims tab, click on your application (in this case Microsoft graph).
On the right-hand side of the screen, search for smtp.
select it then click on update permissions.
Return to the application's overview menu to find the information you need to enter into GLPI.
We filled in the secret value in the previous step, all that remains is to fill in the application ID and the directory ID.
When you click on save, you will be redirected to the Microsoft account to be connected.
In order for the account using SMTP services to be authorised to send mail, it is imperative to activate authenticated SMTP from the Entra Tenant.
Connect to your tenant
Go to users and click on the relevant account
Then go to mail > manage mail applications and select SMTP Authenticated
Once you have entered your Microsoft account details, you will need to accept the necessary authorisations. All that's left is to carry out a test send.
GLPI documentation "Email followups configuration"
