Email DNS Checker

Check the DNS records that make email work for a domain: MX, SPF, DMARC, DKIM and the PTR of the primary mail server.

Check

Domain

DKIM selector (optional) Looked up as <selector>._domainkey.<domain>.

Result

Enter a domain and click Check

The records

MX — where incoming mail for the domain should be delivered.
SPF — a TXT record listing servers allowed to send mail for the domain.
DMARC — a TXT record at _dmarc telling receivers how to handle failures.
DKIM — a public key at <selector>._domainkey used to verify signed mail.
PTR — reverse DNS for the mail server, used in reputation checks.

These records describe configuration only. They do not by themselves guarantee that mail is delivered.