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dns-txt-smtp-tls-subdomain
x402
dns-txt-smtp-tls-subdomain is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Looks up the TXT DNS record for _smtp._tls.<domain> via Cloudflare DoH and reports its existence, content, and TTL.
Price / call$0.01
Success—
StatusUnknown
How this service works
TXT record of _smtp._tls.<domain>: looks up the _smtp._tls host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like _smtp._tls without enumerating subdomains. $0.01 per lookup.
Output
Returns whether the _smtp._tls.<domain> TXT DNS record exists, the full record content if present, and the TTL value, resolved via Cloudflare DNS over HTTPS.
Example use cases
SMTP TLS reporting setup verification
“I'm setting up SMTP TLS reporting for mycompany.com — can you check if the _smtp._tls DNS TXT record is already in place and what it says?”
Email security audit for a domain
“I'm auditing the email security DNS records for clientdomain.org — please check whether it has an _smtp._tls TXT record and report its content and TTL.”
Troubleshoot missing TLS policy record
“We're having issues with SMTP TLS reporting on mailprovider.net — can you look up the _smtp._tls TXT record and tell me if it's there or missing?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/host/smtp-tls/txt?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to check the _smtp._tls subdomain TXT record (used for SMTP TLS reporting policy) for a domain, rather than enumerating all subdomains or fetching general DNS records. Ideal for targeted existence checks and quick audits of SMTP TLS DNS configuration.
Side effects
- Domain does not exist — record reported as absent
- _smtp._tls subdomain has no TXT record — existence reported as false
- Cloudflare DoH upstream timeout or error
- Invalid or malformed domain name input causing lookup failure
- NXDOMAIN response for the _smtp._tls host
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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