What DNSPROBLEM.com Checks
DNSPROBLEM.com checks whether a domain's delegation, authoritative nameservers, glue, SOA serials, MX records, DNSSEC signals, and email authentication records appear consistent when queried directly from DNS.
DNS Problem Troubleshooting
Why It Exists
Many DNS problems are small inconsistencies: one nameserver serving stale data, parent glue not matching the nameserver hostname, mismatched MX answers, or email authentication records that differ depending on which authoritative server is queried. This tool is designed to make those low-level problems easier to spot.
How To Use The Results
The report is intended as a troubleshooting aid, not an automatic instruction to change DNS. DNS answers can vary because of CDNs, GeoDNS, caching, anycast, or live provider changes, so important changes should always be reviewed with the people responsible for the domain, DNS hosting, and email service.
Related Tools
For specialist email authentication checks, use spfproblem.com, dkimproblem.com, and dmarcproblem.com, or check SPF, DKIM, and DMARC together at authproblem.com.