Don’t forget to include the FQDN of the local domain as the first option on the list.
Learn more about DNS Zones » Before getting started with setting up reverse DNS within your Dyn account, contact your IP provider and confirm that they allow delegation of your reverse DNS zone.
The servers use static mappings to the same external DNS servers.
During the PDC upgrade, you install DNS because DCPromo tells you to.
The TCP/IP Settings window calls this the Primary Suffix.
If a query using the primary suffix fails, and the Append Parent Suffixes option is checked, the resolver strips the leftmost element from the primary suffix and tries again. The TCP/IP settings for each network interface can have a unique DNS suffix, populated either statically or with DHCP.
Please note that no delegation changes are required with your registrar with a reverse DNS zone.
Setting up a reverse DNS zone is slightly different for the two types of IP address blocks.
But even the most highly trained and savvy administrator can get in a hurry and make a mistake.
If they do not allow delegation, typically they can host your pointer record (PTR) for you and no reverse DNS configurations are required within your Dyn account.
If they do allow delegation, confirm the exact syntax of the reverse DNS hostname with them as some providers use slashes and some use dashes.
You also forget to reconfigure the DHCP scope options so the clients still point at the ISP’s DNS server instead of the new DC. The DC doesn’t register SRV records in the new DNS zone and the clients wouldn’t be able to find them, even if it did. Read the rest of the column for suggestions about resolving Internet names. It accepts the flat name from the user then appends a suffix to form a FQDN it can send to a DNS server.
The member computers don’t know that the domain has been upgraded to AD unless they just happen to authenticate at the PDC. Users treat additional keystrokes as if they were penalties visited upon them by uncaring IT bureaucrats. The resolver obtains this DNS suffix from one of several places.