Oki CX1145 MFP Network Administration Manual page 26

6. Make sure that the Dynamic update is enabled from DDNS for the Forward Lookup Zones.
- Right-click the domain in the Forward Lookup Zones and select [Properties].
- Make sure the "Allow dynamic updates?" option is set to "Yes" (for Windows 2000
Server) or "Nonsecure and Secure" (for Windows Server 2003).
Windows 2000 Server
If setting of Windows Server 2003 is "Secure" mode or "None" for this DDNS function, you
need to set the correct primary login name and primary password for update the DNS server
by DDNS, or add the equipment's host name manually in the Forward Lookup Zone.
Setting up LDAP Authentication Service 25