I am trying to configure CIFS on an OES2015 SP1 server to use third party authentication - specifically to authenticate against our AD domain. I also want to use the SMB2 Dialect (protocol); not the older NT dialect. In iManager when I go to the CIFS authentication tab and try to put in the AD PDC's name and IP address it tells me "The parameters to CIFS_SetServerConfiguration are not valid for this server type". This error is listed in the Misc section of the troubleshooting docs for CIFS and it says:

If SMB2 is the current dialect, iManager plug-in prevents changing the authentication mode from 'Local' to 'Domain (Passthru)'. It throws the error message, "The parameters to CIFS_SetServerConfiguration are not valid for this server type".

So how do I set up CIFS so that it uses SMB2 for better security and yet authenticates users against AD? What am I missing?

Thanks,

Dan