MachineAccountQuota
Default is 10 for domain users, this makes RBCD and kerberos relay attacks significantly easier to exploit and is worth reporting.
Identify
with nxc
with powerview
Get-DomainPolcy -Policy DC -domain <domain> | Select-Object -ExpandProperty PrivilegeRights | select seMachineAccountPrivilege
ConverFrom-SID <SID>
with powershell
ldapsearch