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DNS Record Lookup: Read A, MX and TXT Results
A DNS record lookup is useful only when each returned record is compared with the job that hostname is meant to do.
Lancez un audit DomainLens frais et utilisez le rapport comme liste de priorités.
Start with the record and the hostname
A DNS lookup does not return one universal answer. An A record answers where a web hostname resolves; MX answers which host accepts mail; TXT carries policies such as SPF and DMARC. Querying the wrong name is the usual reason a correct DNS zone appears broken.
Check the root domain, www hostname and mail subdomains separately. A working apex does not prove www exists, and a valid SPF TXT record does not prove the MX target resolves.
Interpret the result before editing
Use the live DNS checker for a grouped result, the DNS record types guide for each value, and the nslookup and dig command guide when you need to query one resolver directly.
| Result | Check next |
|---|---|
| No A/AAAA | Confirm the hostname should serve a website |
| MX target | Confirm that target has an address record |
| TXT SPF | Keep exactly one SPF policy |
| DMARC | Start at p=none and read reports |