Configure AzureADKerberos Object in AD

I'm stuck - my local domain (on-premises Active Directory) has a different DNS name then my Tenant DNS name, how to set the Kerberos object server using the powershell command?

This command won't work because of the different DNS names!

Set-AzureADKerberosServer -Domain $domain -CloudCredential $cloudCred -DomainCredential $domainCred