https://bugzilla.samba.org/show_bug.cgi?id=15548 

What were you trying to do that didn't work?

samba-gpupdate --rsop fails if machine is not in a site

Please provide the package NVR for which bug is seen:

samba-4.19.3-100

If you install an AD DC with Certificate Server and then just join a domain member, samba-gpupdate doesn't work.

It fails to find the site name.

[root@ip-10-0-192-159 ~]# /usr/sbin/samba-gpupdate --rsop
...
Traceback (most recent call last):
  File "/usr/lib64/python3.9/site-packages/samba/gp/gpclass.py", line 764, in site_dn_for_machine
    site_name = c.netr_DsRGetSiteName(hostname)
samba.WERRORError: (1210, 'WERR_INVALID_COMPUTERNAME')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/sbin/samba-gpupdate", line 131, in <module>
    rsop(lp, creds, store, gp_extensions, username, opts.target)
  File "/usr/lib64/python3.9/site-packages/samba/gp/gpclass.py", line 1041, in rsop
    gpos = get_gpo_list(dc_hostname, creds, lp, username)
  File "/usr/lib64/python3.9/site-packages/samba/gp/gpclass.py", line 869, in get_gpo_list
    site_dn = site_dn_for_machine(samdb, dc_hostname, lp, creds, username)
  File "/usr/lib64/python3.9/site-packages/samba/gp/gpclass.py", line 772, in site_dn_for_machine
    raise ldb.LdbError(ldb.ERR_NO_SUCH_OBJECT,
_ldb.LdbError: (32, 'site_dn_for_machine: no result')
signed SMB2 message (sign_algo_id=1)