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# TLS-RPT checker

Look up a domain's RFC 8460 TLS-RPT record over DNS-over-HTTPS and validate its version tag and reporting destinations.

Press the button to read the record
Nothing leaves this page until you do. The report reads one TXT record at _smtp._tls over your chosen resolver and grades it against RFC 8460: the v=TLSRPTv1 version tag, the rua= destinations, and the one-record-per-name rule.

SMTP TLS Reporting (RFC 8460) is the visibility half of the MTA-STS picture: when a sending MTA cannot open a TLS connection to your mail hosts, this record is where it is told to send its failure summary. Without it, a broken certificate or a downgrade attack fails silently on the sending side. This tool reads the record and grades its shape; it does not check the MTA-STS policy, and it never mails or POSTs anything to the reporting addresses it finds.
OptionsCheck TLS-RPT

## More network tools

- [Live DNS lookup](/network/dns)
- [DNS explainer](/network/dns-explain)
[All network tools](/network)

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Canonical HTML: https://nutter.tools/network/tls-rpt-checker
Markdown version: https://nutter.tools/network/tls-rpt-checker.md
Plain-text version: https://nutter.tools/network/tls-rpt-checker.txt
Agent index: https://nutter.tools/llms.txt