Sep 09 2022
I understand that SMTP Basic Authentication on Office365-Tenants will be automatically disabled from the 1st October 2022 on. As SMPT Oauth 2.0 Client Credential Flow has not been implement yet by Microsoft we can't move our product implementation (non-interactive) away from Basic Authentication.
We therefore need our customers to be able to keep SMTP Basic Authentication enabled after the 1st. October.