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The MX lookup is done directly against the domain's authoritative name server, so changes to MX Records should show up instantly. You can click Diagnostics , which will connect to the mail server, verify reverse DNS records, perform a simple Open Relay check and measure response time performance.
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information. And you'll have a chronological history of your results.
This test will list DNS records for a domain in priority order. The DNS lookup is done directly against the domain's authoritative name server, so changes to DNS Records should show up instantly.
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Create or edit DMARC/DKIM/SPF records, validate that all DNS records critical to email delivery are correct, test IPs/domains/hostnames for blacklist/reputation problems, analyze email headers to uncover email delivery delays/issues, and much more with these tools.
We invite you to explore our knowledge base of blacklist, email, network, and dns problems reported by MxToolbox's set of free tools. You can also learn more about how diagnosing and monitoring these problems can keep nasty surprises from happening to your email, network, or dns.
The Domain Health Check will execute hundreds of domain/email/network performance tests to make sure all of your systems are online and performing optimally. The report will then return results for your domain and highlight critical problem areas for your domain that need to be resolved.
Oct 6, 2023 · MxToolbox started out as a simple set of free tools for IT and Email administrators. Most of our customers used our original DNS, MX and Blacklist lookups to verify their website and email setup and understand why email wasn’t going through.
This lookup will list DNS Text (TXT) records for a domain. The DNS lookup is done directly against the domain's authoritative name servers, so changes to DNS TXT Records should show up instantly.
