A Mail domain's page now shows the two ways to connect it, records at its current DNS provider or Magpie's nameservers, and marks the one in use. Only one is needed.
Before Magpie's nameservers are shown, Magpie copies the domain's existing records and lists them under Check the records. The copy asks the current DNS provider for a complete list, then looks up common names, subdomains in public security-certificate logs, and names the copied records point to, including nested subdomains and subdomains handed to other nameservers. The page lists names whose records could not be read and records Magpie cannot publish. Choose Confirm the records to see the nameservers, or Copy the records again.
Check now shows its result on the page instead of reloading it. NS records can be added for a subdomain.