MX RECORD
LOOKUP
Enter a domain to see its MX records, the mail servers that receive its email, in priority order. We also check the two DNS records that decide deliverability: SPF (which servers may send as this domain) and DMARC (what receivers should do with mail that fails checks).
What is an MX Record Lookup?
An MX record lookup is a free tool that shows the mail servers behind a domain in priority order, the records that decide where its email is delivered. It also checks the SPF and DMARC records that determine whether that email is authenticated and lands in the inbox rather than the spam folder.
How does an MX Record Lookup work?
- 01We resolve the domain’s MX records and sort them by priority.
- 02TXT records are scanned for an SPF policy on the root domain.
- 03The _dmarc subdomain is checked for a published DMARC policy.
Frequently asked questions
What is an MX record?
An MX (Mail Exchange) record tells the world which servers accept email for a domain. Each record has a priority, and sending servers try the lowest number first. A domain with no MX records cannot reliably receive email, and a typo in one silently routes mail to the wrong place.
Why do SPF and DMARC matter?
SPF lists the servers allowed to send email as your domain, and DMARC tells receiving servers what to do when a message fails SPF or DKIM checks. Gmail, Outlook and Yahoo now expect both. A domain missing either is far more likely to land in spam or be spoofed by attackers.
My MX records look right but email still fails. What next?
The next suspects are the sending IP being on a spam blacklist, or the mail host itself misconfigured. Run the same domain through our Blacklist Checker to rule out a DNSBL listing, and check that SPF actually includes the service you send through.