Free Tool
DNS Lookup
Full DNS record lookup for any domain. See MX, A, AAAA, NS, TXT, and SOA records plus email authentication status at a glance.
About DNS Records
DNS (Domain Name System) is the foundation of email delivery. When someone sends an email to your domain, the sending server looks up your DNS records to find your mail servers (MX records), verify your identity (SPF, DKIM, DMARC), and deliver the message.
Misconfigured DNS is one of the most common causes of email deliverability problems. Missing MX records mean you cannot receive email. Missing authentication records (SPF, DKIM, DMARC) mean your emails are more likely to be flagged as spam.