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MTA-STS and TLS-RPT Check
x402
MTA-STS and TLS-RPT Check is a paid API for AI agents from intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Checks a domain's MTA-STS policy and TLS-RPT reporting record to determine if inbound email is protected against downgrade attacks.
Price / call$0.01
Success—
StatusUnknown
How this service works
MTA-STS and TLS-RPT check for a domain: the _mta-sts DNS record, the published policy file (mode enforce/testing/none, allowed MX, max_age) fetched from mta-sts.<domain>, and the _smtp._tls TLS reporting record. Tells you if inbound email is protected against downgrade attacks. $0.01 per domain.
Output
Returns the _mta-sts DNS record, the fetched MTA-STS policy file contents (including mode: enforce/testing/none, allowed MX hostnames, and max_age), and the _smtp._tls TLS-RPT reporting record — along with an overall assessment of whether inbound email is protected against downgrade attacks.
Example use cases
Pre-send email security audit
“Before we start sending email from acmecorp.com, can you check if it has a proper MTA-STS policy in enforce or testing mode, and whether the TLS-RPT record is set up so we get notified of failures?”
Vendor email security review
“I need to check whether our vendor's domain, suppliercorp.net, has MTA-STS configured to protect inbound email — tell me the policy mode and which MX servers are listed.”
Periodic domain security monitoring
“Run an MTA-STS and TLS-RPT check on newsletter.mybrand.io and tell me if the policy is in enforce mode, what the max_age is set to, and if there's a valid TLS reporting DNS record.”
Technical details
Endpoint
GEThttps://intel.rallylive.ca/email/mta-stsWhen to prefer
Use this endpoint when you need a combined check of both MTA-STS policy (DNS record + hosted policy file) and TLS-RPT reporting configuration for a domain in a single call. Prefer it over manual DNS lookups when you want a parsed, human-readable summary of the policy mode, allowed MX, max_age, and reporting setup — especially for bulk domain audits at $0.01 per domain.
Side effects
- Domain does not exist — DNS lookup fails
- No _mta-sts DNS record found — policy absent
- Policy file not reachable at mta-sts.<domain> — HTTP fetch fails
- Policy file malformed or missing required fields
- No _smtp._tls TLS-RPT record found
- Payment not processed — 402 response if x402 payment is missing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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