DNS records
Every record type in one response: A, AAAA, MX, TXT, NS, SOA, CNAME, CAA and SRV, plus a check that www and mail resolve.
Category
DNS records and email authentication: record lookups, SPF, DMARC, DKIM and MX checks in one request.
Every record type in one response: A, AAAA, MX, TXT, NS, SOA, CNAME, CAA and SRV, plus a check that www and mail resolve.
SPF, DMARC and DKIM plus MX in one response, with a verdict and the exact problems that weaken delivery.