Forum Discussion
Simple Question about CAS and CA Policies
Best configure an authentication policy in Exchange, it stops those attempts before they even hit AAD: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/disable-basic-authentication-in-exchange-online
Best configure an authentication policy in Exchange, it stops those attempts before they even hit AAD: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/disable-basic-authentication-in-exchange-online
VasilMichev Thanks very much. Because of your comment I looked up the method to create and apply a new authentication policy. I made one that blocked all basic authentication, then modified it to allow authenticated SMTP. Then I applied it on a per user basis. This seemed to work well and like you said it should stop it before it gets into the Azure AD. Thanks so much.