I cannot figure out how to do the most simple DNS setup:
A record --> I.P. address of my server CNAME --> alias for WWW (Typically has value of @)
The DNS control panel for my domain indicates that the A record is set to my server, but an nslookup reveals that it really didn't work. The I.P. lookup tool reports that the www address is undefined.
It seems that there is no edit, just input values to INSERT and hope for the best. I've tried everything I can think of, and searched the site high and low for any help at all - nothing.
Looks like you have an 'A' record set up now on both your main domain and your www subdomain. The IP lookup confirms the same IP address for both.
Are you wanting to use a CNAME now for the www record? You can make that change using the drop-down menu on the DNS page. We don't have a help file for a combination 'A' record, CNAME set-up, but it'd basically be a combination of the two below:
How do I create an A record to point my domain to an IP address?
Select "My Domains" from the left-side menu bar and click "Manage Domains" in the drop-down.
Check the box next to your domain name(s) and click on the "Action" button.
Choose "DNS Settings" from the "Action" list.
On the DNS Settings page, select the "Dynadot DNS" setting from the top drop-down menu.
In the "Domain Record (optional)" section, select "A" from the drop-down menu and then enter your IP address in the "IP Address or Target Host" box.
In the "Subdomain Records (optional)" section, enter "www" as the subdomain, select "A" from the drop-down menu and then enter your IP address in the "IP Address or Target Host" box.
Press the "Save Settings" button to save your changes.
Please be aware it might take some time for your settings to propagate.
A CNAME record is short-hand for Canonical Name record, which allows you to assign a domain or subdomain to another address or hostname. CNAME records should only be used if you can't use an A record.
NOTE: If you already have an A record within the Domain records section, please SKIP step 5!
Select "My Domains" from the left-side menu bar and click "Manage Domains" in the drop-down.
Check the box next to the domain name(s) and select "DNS Settings" from the "Action" drop-down menu.
On the new page, select the "Dynadot DNS" option from the drop-down menu.
In the "Domain Record (optional)" section at the top, select "Forward" as the record type, choose forward type, and enter "https://www.yourdomainname.ext" as the "Target Host". (NOTE: This is optional and please replace the value based on your own domain name.)
Under the "Subdomain Record (optional)" field, enter "www" as the subdomain, select "CNAME" as the record type and enter the CNAME record given to you.
Scroll down to the bottom of the page and click on the "Save Settings" button to save your changes.