# Mail Exchanger (MX) Record Lookup for Security Review

> Mail Exchanger (MX) Record Lookup for Security Review is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Returns the MX hosts and their delivery priority values for a given domain using DNS lookup, intended for security review workflows.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/demand-domain-mx-records-security-review?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mail-exchanger-mx-record-lookup-for-security-review-d774b618
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DiqJ0-5N4vjGAk0w4Md8j

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mail-exchanger-mx-record-lookup-for-security-review-d774b618 -d '<json body>'
```

Example prompt: Can you look up the MX records for gmail.com and tell me the mail servers and their delivery priorities?

## When to prefer this

Use this endpoint when you need to programmatically retrieve DNS MX records for a domain as part of a security review, vendor assessment, phishing investigation, or email infrastructure audit. Prefer this over general DNS tools when you want a structured, machine-readable response with host and priority fields. Do not use this to verify whether a specific email inbox exists or to send email.

## Known failure modes

- Domain does not exist or has no MX records — returns empty result or DNS NXDOMAIN
- Invalid or malformed domain input — validation error returned
- DNS resolution timeout — transient failure, retry recommended
- Private or internal domains not resolvable via public DNS — no results returned

## How this service works

Mail exchanger lookup for Security review: Return the domain MX hosts and their delivery priorities. DNS data only; does not send email or verify that an inbox exists.

## Output

A list of MX records for the queried domain, each containing the mail exchanger hostname and its associated delivery priority integer. Pure DNS data — no email is sent and no inbox existence is verified.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "domain": {
   "type": "string",
   "default": "example.com",
   "description": "Public DNS domain, e.g. example.com."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mail-exchanger-mx-record-lookup-for-security-review-d774b618/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)