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Email Authentication Posture Check (SPF/DMARC/DKIM/MX)
x402
Email Authentication Posture Check (SPF/DMARC/DKIM/MX) is a paid API for AI agents from email-auth.use.x402atlas.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Parses and grades SPF, DMARC, DKIM, and MX records for any domain, identifying deliverability and anti-spoofing configuration gaps.
Price / call$0.01
Success—
StatusUnknown
How this service works
Email authentication posture check: parses SPF, DMARC and DKIM plus MX for any domain and grades deliverability/anti-spoofing gaps (SPF +all, SPF >10 lookups, DMARC p=none, missing DKIM). Clean JSON for deliverability and security-ops automation.
Output
A structured JSON object containing parsed SPF, DMARC, DKIM, and MX records for the specified domain, along with a deliverability/anti-spoofing grade and a list of detected configuration gaps (e.g. SPF uses +all, SPF exceeds 10 DNS lookups, DMARC policy is 'none', DKIM missing).
Example use cases
Phishing risk vendor domain check
“We're about to wire funds to a new supplier using invoices from payments@globalsupplyco.com — can you check if globalsupplyco.com has proper DMARC and SPF in place, or if their domain could easily be spoofed by someone sending fake invoices?”
Debug emails landing in spam
“Our marketing emails from newsletter@brightwave.io keep landing in recipients' spam folders — can you pull the SPF, DKIM, and DMARC records for brightwave.io and tell me if there are any configuration issues that might be hurting our deliverability?”
Bulk M&A domain security audit
“We're doing due diligence on a potential acquisition and I need to audit the email security posture of these five domains: targco.com, targco.io, targco.net, targco-labs.com, and targco-corp.com — can you check each one for SPF, DMARC, and DKIM gaps and flag any that are vulnerable to spoofing?”
Technical details
Endpoint
GEThttps://email-auth.use.x402atlas.com/checkWhen to prefer
Use this endpoint when you need a fast, structured, automated audit of a domain's email authentication configuration — especially for security operations, deliverability troubleshooting, phishing risk assessment, or bulk domain monitoring pipelines. It is ideal when you need clean JSON output suitable for automation rather than a human-readable web report.
Side effects
- Domain not found or does not exist — returns error indicating invalid domain
- Domain has no DNS records — returns empty or missing record fields
- DKIM selector not found when explicitly specified — returns DKIM check failure
- Network/DNS resolution timeout — returns timeout error
- Invalid domain format provided (e.g. includes scheme or is an IP literal) — returns validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"mx": [
{
"host": "aspmx.l.google.com.",
"pref": 1
}
],
"spf": {
"record": "v=spf1 include:_spf.google.com ~all",
"mechanisms": [
{
"kind": "include",
"value": "_spf.google.com",
"qualifier": "+",
"causes_dns": true
},
{
"kind": "all",
"value": "",
"qualifier": "~",
"causes_dns": false
}
],
"dns_lookups": 1,
"all_qualifier": "~all"
},
"dkim": {
"found": [
{
"record": "v=DKIM1; k=rsa; p=MIGfMA0GCSq...",
"selector": "google"
}
],
"checked_selectors": [
"default",
"google",
"selector1",
"selector2",
"k1",
"dkim",
"mail"
]
},
"dmarc": {
"pct": 100,
"rua": [
"mailto:dmarc@example.com"
],
"ruf": [],
"aspf": "s",
"adkim": "s",
"policy": "reject",
"record": "v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@example.com; adkim=s; aspf=s",
"subdomain_policy": ""
},
"domain": "example.com",
"warnings": [],
"queried_at": "2026-07-02T12:00:00Z",
"accepts_mail": true
}
}Tags
x402
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