search for: advanced_domain_option

...ol=SMB3 winbind enum users=yes load printers=yes workgroup=EXAMPLE and in a second file [global] follow symlinks=no create mask= log level=0 wide links=no rpc_server:mdssvc=external prev domain=EXAMPLE server signing=no msdfs root=no vfs objects= advanced_domain_option=yes reset on zero vc=no directory mask= syno catia=no veto files= smb2 leases=no btrfs clone=no winbind expand groups=1 rpc_daemon:mdssd=fork syno wildcard search=no enable nt4 enum=no allow insecure widelinks=no enable veto files=no disable shado...

We have to Samba DCs and a couple of Synology NAS connected/bound to the Samba AD. On regular basis the Synology NAS (I believe Samba 4.4.16) looses its connection to the AD outputting the error message, that the domain cannot be found. In the logs of the NAS I can only find the error message ?synowin: domain_test_join.c:59 net ads test join fail?. In the logs of the DC I notice that from one