Services that send email for you, such as Mailchimp, often ask you to "authenticate your domain". They show you some settings, called records, that have to be added to your domain name's settings. The records prove to receiving mail services that the service may send on your behalf, so your messages are less likely to land in spam.
If we manage your domain name
You cannot add the records from your admin, so we add them for you. Contact us and send us exactly what the service shows: each record's type, name and value, copied as shown, or a screenshot of the page. Tell us which service it is. We add them and tell you when it is done, and then you can go back to the service and ask it to check.
Records can take a while to take effect, so the service may not confirm straight away.
If your domain name is managed somewhere else
The company where it is registered, or whoever runs its settings, adds the records. Give them what the service shows. If you are not sure who that is, contact us. Your Domain Name explains who manages what.