Smtp Openrelay Test

Paid SMTP open-relay test (cycle 154) - actually attempts MAIL FROM + RCPT TO against each MX host. Resolves MX via Cloudflare DoH, opens TCP/25, sends EHLO + MAIL FROM:<external> + RCPT TO for both local-domain and foreign-domain recipients. Verdict mapping per RFC 5321: open_relay (250/250 critical), relay_denied (550/553 good), requires_auth (530/535 good), greylist_or_throttle (421/452), sende

Open endpoint ↗

Price per call: $0.000
Chain: Base
Method: GET
Paid calls · 30 days: 0

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://ptfya-38-190-144-122.run.pinggy-free.link/api/smtp-openrelay-test", { method: "GET" });
console.log(await res.json());

https://ptfya-38-190-144-122.run.pinggy-free.link/api/smtp-openrelay-test