Email DNS
Email DNS Checker
Enter a domain. We check MX (can it receive mail), SPF and DMARC (can senders be spoofed), and DKIM if you supply a selector — then validate each policy and flag the gaps. Migrations are where email quietly breaks, so verify before and after the move.
What this checks
- MX: mail exchangers and their priorities.
- SPF: one record, a valid
allqualifier, and under the 10-DNS-lookup limit. - DMARC: presence and policy (
none/quarantine/reject) plus a reporting address. - DKIM: with a selector, confirms the key exists and isn't revoked.
Frequently asked questions
Which DNS records does email need?
MX to receive mail, plus SPF, DKIM, and DMARC to stop spoofing and land in the inbox.
What SPF policy should I use?
End the record with
-all (hard fail) once every sender is listed, and stay under 10 DNS lookups.Why check DMARC?
DMARC enforces SPF/DKIM and sends reports. Move from
p=none to quarantine, then reject, once reports look clean.Related free tools
- All tools — browse every free hosts.click tool.
- Nameserver checker — NS records, SOA, network diversity.
- Who is hosting this site? — find the host behind a domain.