# DMARC\_BUILDER

DNSControl contains a `DMARC_BUILDER` which can be used to simply create DMARC policies for your domains.

### Example

#### Simple example

{% code title="dnsconfig.js" %}

```javascript
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  DMARC_BUILDER({
    policy: "reject",
    ruf: [
      "mailto:mailauth-reports@example.com",
    ],
  }),
);
```

{% endcode %}

This yield the following record:

```
@   IN  TXT "v=DMARC1; p=reject; ruf=mailto:mailauth-reports@example.com"
```

#### Advanced example

{% code title="dnsconfig.js" %}

```javascript
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  DMARC_BUILDER({
    policy: "reject",
    subdomainPolicy: "quarantine",
    percent: 50,
    alignmentSPF: "r",
    alignmentDKIM: "strict",
    rua: [
      "mailto:mailauth-reports@example.com",
      "https://dmarc.example.com/submit",
    ],
    ruf: [
      "mailto:mailauth-reports@example.com",
    ],
    failureOptions: "1",
    reportInterval: "1h",
  }),
);
```

{% endcode %}

{% code title="dnsconfig.js" %}

```javascript
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  DMARC_BUILDER({
    label: "insecure",
    policy: "none",
    ruf: [
      "mailto:mailauth-reports@example.com",
    ],
    failureOptions: {
        SPF: false,
        DKIM: true,
    },
  }),
);
```

{% endcode %}

This yields the following records:

```
@           IN  TXT "v=DMARC1; p=reject; sp=quarantine; adkim=s; aspf=r; pct=50; rua=mailto:mailauth-reports@example.com,https://dmarc.example.com/submit; ruf=mailto:mailauth-reports@example.com; fo=1; ri=3600"
insecure    IN  TXT "v=DMARC1; p=none; ruf=mailto:mailauth-reports@example.com; fo=d"
```

#### Parameters

* `label:` The DNS label for the DMARC record (`_dmarc` prefix is added, default: `"@"`)
* `version:` The DMARC version to be used (default: `DMARC1`)
* `policy:` The DMARC policy (`p=`), must be one of `"none"`, `"quarantine"`, `"reject"`
* `subdomainPolicy:` The DMARC policy for subdomains (`sp=`), must be one of `"none"`, `"quarantine"`, `"reject"` (optional)
* `alignmentSPF:` `"strict"`/`"s"` or `"relaxed"`/`"r"` alignment for SPF (`aspf=`, default: `"r"`)
* `alignmentDKIM:` `"strict"`/`"s"` or `"relaxed"`/`"r"` alignment for DKIM (`adkim=`, default: `"r"`)
* `percent:` Number between `0` and `100`, percentage for which policies are applied (`pct=`, default: `100`)
* `rua:` Array of aggregate report targets (optional)
* `ruf:` Array of failure report targets (optional)
* `failureOptions:` Object or string; Object containing booleans `SPF` and `DKIM`, string is passed raw (`fo=`, default: `"0"`)
* `failureFormat:` Format in which failure reports are requested (`rf=`, default: `"afrf"`)
* `reportInterval:` Interval in which reports are requested (`ri=`)
* `ttl:` Input for `TTL` method (optional)

#### Caveats

* TXT records are automatically split using `AUTOSPLIT`.
* URIs in the `rua` and `ruf` arrays are passed raw. You must percent-encode all commas and exclamation points in the URI itself.