Mail Health Check
Check MX, SPF, DMARC, DKIM, and blacklist status for a domain in one pass, with a plain verdict on what's actually wrong with its mail setup.
Runs MX, SPF, DMARC, DKIM, and blacklist checks in one pass. DKIM is checked against common selectors only — a miss there isn't definitive.
Enter a domain to check its mail setup
MX, SPF, DMARC, DKIM, and blacklist status run together, with a plain verdict on what's wrong.
Mail Health Check runs the same checks as this site's standalone MX Lookup, SPF Checker, DMARC Checker, DKIM Checker, and DNS Blacklist Check tools, together, against one domain, with a single plain-language verdict instead of five separate results to piece together.
MX records decide whether mail sent *to* the domain has anywhere to go. SPF, DKIM, and DMARC decide whether mail claiming to be sent *from* the domain can be trusted — three separate, complementary standards that together make up what's usually called mail authentication. Blacklist status checks whether the domain's own mail servers have a sending reputation problem right now.
DKIM is the one check here that's inherently best-effort: a DKIM key is published per selector, and there's no DNS record that lists a domain's selectors — only a signed email's own DKIM-Signature header names the real one. This checks a handful of the most common selectors; a miss there means "not found under a common selector," not "DKIM isn't configured." Check the exact selector directly with the DKIM Checker if you know it.