> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dmarceye.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Five tools for inspecting and building the DNS records behind email authentication: DMARC, SPF, DKIM, BIMI, and a full DNS record scan.

Select **DNS Tools** in the left navigation to reach five tools, each on its own tab. They read live DNS and return a structured result, and they work on any domain, including domains that are not in your account.

## One builds, four report

The names tell you which is which. The **DMARC Configurator** is the only tool that changes anything: it walks you from a domain to a finished record with publishing instructions, and it covers all four record types. The four **Checkers** read what is already published and tell you what is wrong, without altering it.

<CardGroup cols={2}>
  <Card title="DMARC Configurator" icon="wand-magic-sparkles" href="/dmarc-configurator">
    A four-step wizard that reads your DNS, then builds a DMARC, SPF, DKIM, or BIMI record you can publish.
  </Card>

  <Card title="DNS Checker" icon="server" href="/dns-configurator">
    Nameservers, DNS provider, DMARC policy, and TXT records for a domain, in one scan.
  </Card>

  <Card title="SPF Checker" icon="envelope" href="/spf-configurator">
    Validates your SPF record, counts your DNS lookups against the limit of ten, and shows how each mechanism resolves.
  </Card>

  <Card title="DKIM Checker" icon="key" href="/dkim-configurator">
    Finds DKIM records by scanning 19 common selectors, or looks up a selector you name.
  </Card>

  <Card title="BIMI Checker" icon="image" href="/bimi-configurator">
    Checks whether your domain publishes a BIMI record, and what to put in place before your logo will display.
  </Card>
</CardGroup>

<Note>
  The four Checkers appear in the app as **DNS Scanner**, **SPF Scanner**, **DKIM Scanner**, and **BIMI Scanner**. Each page below names the tab it lives on.
</Note>

## When to use them

* Setting up email authentication on a new domain
* After changing DNS settings or switching email providers
* Troubleshooting a deliverability problem
* Auditing a domain you have just taken over
* Checking a domain that is not in your account

<Info>
  For a domain already in your account, [DMARC Management](/dmarc-management) configures and publishes policy from the domain's own detail view.
</Info>