To delete a DHCP server from the list of authorized servers in the directory service. delete server Parameters: ServerDNS ...

To delete a DHCP server from the list of authorized servers in the directory service. 
 
delete server   
 
Parameters: 
 
        ServerDNS      - The DNS domain name of the DHCP server 
                         computer.  
 
        ServerIP       - The IP address of the DHCP server computer.  
 
Notes:         All parameters, as shown in , are 
               required. The ServerDNS element is case sensitive. Use 
               SHOW SERVERS to determine the exact case of the name 
               that is stored in the Active Directory. 
 
Example:       delete server dhcpsrv1.example.microsoft.com 10.2.2.2 
 
               This command deletes the server with DNS name 
               mycomp.mydom.microsoft.com and IP address 10.2.2.2 from 
               the list of servers in the directory service - this effectively removes
               any authorization for the DHCP server service to run.