The DSfW environment includes different types of user accounts and group accounts. Some of the accounts are created during installation and the rest by administrators. The administrators create accounts related to the persons in the organization.
Default User Accounts
The user accounts created by default are krbtgt, guest, and administrator.
Each time a domain controller is added to the domain, it creates a machine account for that domain controller and a corresponding proxy user account. The domain controller account names are suffixed with $. For example, if the hostname of the domain controller is dsfw-dc1, then the machine account for that domain controller is dsfw-dc1$ and the proxy user account is oescommonproxy_dsfw-dc1.
An account is created for every workstation or member server that joins the domain. These account names are also suffixed with $. For example, if the name of the workstation is Desktop-AEIOU, then the workstation account created is Desktop-AEIOU$.
Default Group Accounts
The group accounts created by default are Group Policy Creator Owners, Domain Guests, Domain Admins, Cert Publishers, Domain Controllers, Domain Computers, Domain User, dnsupdateproxy, dhcp administrators, dhcp users, telnet clients, help services dns-dhcp group, enterprise admins, schema admins.