Problem
Some shares are not getting mapped on user logon.
Environment
The shares are on a UCS Member server.
Solution
Possibility 1
Set UCR Variable:
ucr set kerberos/defaults/dns_lookup_kdc=false
Possibility 2
Name resolution from within Samba is not working.
Set UCR variable:
ucr set samba/winbind/rpc/only=yes
systemctl restart winbind