A working maileo setup usually requires several DNS records so the internet knows where to deliver mail and how to evaluate your domain's mail reputation. Common record types include MX for inbound mail, TXT for SPF or verification, and sometimes additional records for DKIM and DMARC depending on your configuration.
Use the values provided in your account exactly as shown. Even small DNS mistakes such as the wrong host name, missing selector, or an outdated value can prevent the domain from verifying or cause mail delivery problems.
After publishing the records, allow time for DNS propagation before testing.