Welcome to the Centrify forums.
If you're using our adbindproxy mapping service, you need stock samba.
Keep in mind that for over more than a year Centrify does not ship an enhanced version of Samba; instead we ship an identity mapper (adbindproxy).
Adbindproxy is basically a complementing service to stock Samba, that allows for the resolution of users (uid), groups (gid) and group membership on Centrified servers.
If you have the older Centrify-enhanced samba (based on Samba 3.x) code, note that the product is EoL and should be decommissioned since it's based on a Samba version that is susceptible to the Badlock exploit.
For more information about adbindproxy, review the guide: https://docs.centrify.com/en/css/suite2017/centrify-adbindproxy-guide.pdf
As always, please when posting, let us know the operating system, version, version of centrifydc (adinfo -v).
Robertson