Hello
We have an issue with configuration the PostMaster mail account with Exchange Online.
I configured the application in Azure Active Directory with a redirectURL like https://xxxxx/otobo/index.pl?Action=AdminMailAccount
I configured the oauth2 system parameters in System Configuration -> Core -> Email -> OAuth2 with the secretID, domaine name, and applicationID, with the Scope parameter configuration with: offline_access https://outlook.office.com/IMAP.AccessAsUser.All
but each time I save new postmaster email user credential prompt pops up but after fill in password nothing happens and I’m redirected to the redirect URL with error log in the system logs:
Could not request access token
Got: ‚401 Unauthorized‘!
Can’t perform POST on https://login.microsoftonline.com/xxxxxxxMyTenantIdxxxxxxx/oauth2/v2.0/token: 401 Unauthorized
Thanks for your help.