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DMARC Record Builder

Build DMARC records with policy, reporting, and alignment options.

Building DMARC record...

Generated DMARC record

API endpoint

POST /v1/tools/dmarc/build

Interactive intelligence tool

Run the check, then ship the workflow

Use the browser tool for a fast answer, then move the same logic into scripts, monitoring, or product flows when it becomes repeatable.

Start with the live form

Enter a domain, URL, IP, email, or record and get a focused result without setup.

Review decision-ready signals

Outputs highlight statuses, risks, records, and next actions instead of raw provider noise.

Automate the workflow that works

Use the request and response examples to turn a one-off check into an API call or recipe.

Used by people at these companies

What this tool helps you decide

Each page is shaped around a practical operational question, not just a raw lookup.

Signal

See the current DNS, registration, security, pricing, or reputation evidence.

Context

Compare the result with related checks so the next move is easier to trust.

Action

Copy examples, open linked tools, or move into API documentation when you need scale.

Trust signals before you integrate

Transparent docs, authenticated requests, and visible reliability details make it easier to evaluate DomScan before you ship.

Live Service status

Check live service health and documented failure responses before you integrate.

OpenAPI API artifacts

OpenAPI, Swagger, Postman, CLI, SDK, and MCP links are one click away.

API keys Protected access

Authenticated endpoints use API keys with clear credit costs before you call them.

10,000 Free allowance

Start with 10,000 monthly credits and upgrade only when usage grows.

Key Features

Policy

Generate none, quarantine, or reject policies.

Aggregate reports email (rua)

Add a rua mailbox for aggregate reports.

Percentage

Tune the pct value while you phase in enforcement.

Example request

POST /v1/tools/dmarc/build JSON

{
  "policy": "quarantine",
  "percentage": 100,
  "rua": ["mailto:[email protected]"]
}

Example response

Generated DMARC record JSON

{
  "record": "v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected]"
}

Built on the same API

The browser experience previews DomScan's structured endpoints, so teams can validate a use case before writing code.

Open API docs All tools

Frequently asked questions

What does the DMARC policy control?

The policy tells receivers how to handle mail that fails SPF or DKIM alignment: monitor only, quarantine, or reject.

Do I need a rua address?

No, but adding a reporting mailbox helps you monitor authentication failures and deployment progress.

What does pct do?

Pct sets the percentage of mail the policy applies to. Many teams start below 100 while testing and increase it gradually.

Support