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SPF Authorizes Yahoo Checker
x402
SPF Authorizes Yahoo Checker is a paid API for AI agents from email.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).
Checks whether a domain's SPF record explicitly authorizes Yahoo to send mail on its behalf, returning yes/no, the matching mechanism, and the full SPF record.
Price / call$0.01
Success—
StatusUnknown
How this service works
Does the domain's SPF record authorise yahoo to send its mail? Reads the SPF TXT record (Cloudflare DoH) and checks for yahoo's include/ip mechanisms, returning yes/no, the matching mechanism and the full record. Confirms a vendor integration is wired for deliverability, or spots an unexpected sender. $0.01 per lookup.
Output
Returns a yes/no authorization result indicating whether Yahoo is covered by the domain's SPF record, the specific SPF mechanism that matched (e.g. an include or ip4/ip6 entry), and the full raw SPF TXT record retrieved via Cloudflare DNS over HTTPS.
Example use cases
Verify Yahoo transactional email setup
“We just set up Yahoo as our transactional email provider for newsletters.example.com — can you confirm the SPF record actually authorizes Yahoo to send mail for that domain?”
Audit domain for unexpected Yahoo sender
“I'm doing a security review of ourdomain.com and want to know if Yahoo is authorized in the SPF record — I didn't expect them to be there and want to check if there's an unauthorized sender.”
Pre-launch email deliverability check
“Before we go live, can you verify that the SPF record for mybrand.io includes Yahoo so our Yahoo-routed emails won't land in spam?”
Technical details
Endpoint
GEThttps://email.intel.rallylive.ca/email/spf-authorizes/yahoo?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to verify Yahoo sender authorization in a domain's SPF policy — for example, when onboarding Yahoo as an email vendor, auditing SPF records for unexpected senders, or confirming deliverability before launch. Prefer this over generic SPF lookup tools when you need a structured yes/no answer specifically about Yahoo with the matched mechanism surfaced automatically.
Side effects
- Domain has no SPF TXT record — returns no authorization with empty record
- Domain does not exist or DNS lookup fails — returns an error response
- SPF record exists but is malformed or unparseable — may return partial data or error
- Yahoo not found in SPF chain — returns no with null matching mechanism
- Rate limiting or DoH (Cloudflare) timeout — may return a service error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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