Microsoft 365 Azure AD Konfiguration

At the beginning, an application must be registered if this has not already been done.

You can create a new application in the Azure Active Directory under "App registrations" under "+ New registration".

Application configuration:

• Set API permissions as follows and grant admin consent.

• Configure "Authentication":

-"Add a platform"

-Enable "Allow public client flows" 

-Save

• Create app role.

• Enable smtp client authentication

- Connect to your Exchange Online environment (Connect-ExchangeOnline)

- Get actual SMTP client authentication configuration for your mailbox (Get-CASMailbox -Identity alias@yourdomain.com)

- Enable smtp client authentication (Set-CASMailbox -Identity alias@yourdomain.com -SmtpClientAuthenticationDisabled $false)