Thank you for the reference to the previous discussion.
However, from our IT department, they tell me:
This response seems to be misleading. SMTP Auth is a parent category that includes both basic and modern auth (OAuth2). By the description of the configuration, you are still configuring basic username and password. Here is an explanation from the Microsoft forums:
“SMTP AUTH is usually recommended by most vendors/suppliers and is supported by most apps/devices. SMTP AUTH can be done using Basic and Modern Auth, depending on the vendor/app/device (but since MS is deprecating basic auth, it needs to be configured with Modern Auth)… Modern authentication is based on the Active Directory Authentication Library (ADAL) and OAuth 2.0.”
So while it is correct that Microsoft is not discontinuing SMTP Auth, it is true that one of the methods included in SMTP Auth will not be available (specifically using a username and password).
The suggested solution does not seem applicable as described. How can we proceed?