Forum Discussion
Microsoft 365 automatically unchecks the Authenticated SMTP under a user
Hi, it might be caused by security settings that automatically disable basic SMTP authentication. For example, if you’ve enabled “Security Defaults” or a Conditional Access policy that blocks “Legacy Authentication,” Microsoft 365 may uncheck the box on its own. Check your EntraID security settings, and if you need SMTP Auth, you’ll have to either exclude that user or disable the policy that’s blocking it.
Hi, yes this is exactly what I am finding out. I talked to the application that we are using, and they are making changes to fix this problem by removing the simple user ID/PW that is required to set SMPT authentication and adding the new layer that is required to fix this problem.
Thank you for your response and I consider this problem fix.