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DKIM Selector 'mail' Public Key Lookup
x402
DKIM Selector 'mail' Public Key Lookup is a paid API for AI agents from dns.intel.rallylive.ca, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).
Looks up and parses the DKIM public key for the 'mail' selector of a domain via Cloudflare DoH, returning key type, length, testing flag, and revocation status.
Price / call$0.01
Success—
StatusUnknown
How this service works
DKIM public key for selector "mail" of a domain: looks up mail._domainkey.<domain> (TXT, Cloudflare DoH) and parses v=, k=, key type, public-key length, testing flag and whether the key is revoked (empty p=). Confirms that mail signed with the mail selector will verify. $0.01 per lookup.
Output
Returns parsed details from the mail._domainkey.<domain> TXT record including the DKIM version tag (v=), key type (k=), public key length in bits, whether the testing flag is set, and whether the key is revoked (empty p= field), plus a confirmation of whether emails signed with this selector will verify successfully.
Example use cases
Email deliverability DKIM audit
“I'm having email deliverability issues with acme.com — can you check the DKIM mail selector and tell me if the public key is valid, what key type and length it uses, and whether it's been revoked or is still in testing mode?”
Pre-send DKIM configuration check
“Before we launch our email campaign from newsletter.io, can you verify that the DKIM mail selector is properly set up — confirm the key exists, isn't revoked, and isn't stuck in testing mode?”
Domain security posture review
“I'm doing a security review of startupxyz.com — can you look up the DKIM mail selector and parse the public key details including the key type, length, and revocation status?”
Technical details
Endpoint
GEThttps://dns.intel.rallylive.ca/dns/dkim/mail?utm_source=zero.xyzWhen to prefer
Use this endpoint when you specifically need to inspect the 'mail' DKIM selector, which is one of the most common default selector names used by mail servers and email service providers. Prefer this over generic DNS TXT lookup endpoints when you need structured parsing of DKIM fields (v=, k=, p= length, testing flag, revocation) rather than raw TXT data.
Side effects
- Domain has no mail._domainkey TXT record — returns not found or empty result
- TXT record is malformed and cannot be parsed — returns parse error
- Domain does not exist in DNS — returns NXDOMAIN
- Cloudflare DoH is unreachable — returns network/upstream error
- Empty p= field indicates a revoked key — returned as a parsed flag rather than an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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