Newer Directadmin will append the domain name into the default "mail" subdomain in the MX record.
Due to the DA update, older style "mail" will not remove the MX record as it does not match "mail.domain"
Newer Directadmin will append the domain name into the default "mail" subdomain in the MX record.
Due to the DA update, older style "mail" will not remove the MX record as it does not match "mail.domain"