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

# SPF

> Understand the SPF records used by a Dugble sending domain.

SPF lets receiving mail systems check whether a mail server is authorized to send on behalf of a domain.

## SPF records in Dugble

When you create a sending domain, Dugble returns the DNS verification records required by the configured email provider. SPF records appear in the domain's `records` array with `record` set to `SPF`.

A record includes the DNS `name`, `value`, `type`, verification `status`, and `ttl`. Some DNS records can also include a priority.

## Publish the returned record

Add the SPF-related record exactly as returned by Dugble. Do not guess or construct a provider-specific value yourself; the domain resource is the source of truth for the DNS values expected for that domain.

<Note>
  Your DNS provider may display SPF configuration as a TXT or MX-related record depending on the provider setup. Use the `type`, `name`, `value`, and optional `priority` returned by Dugble.
</Note>

## Verify the domain

After publishing the DNS records, request a fresh verification check:

```http theme={null}
POST /domains/{domain_id}/verify
```

The returned domain shows the current verification state of each record.

## Avoid conflicting SPF configuration

A domain should not publish multiple conflicting SPF policies for the same hostname. If you already use other email services, review the existing DNS configuration before replacing or combining records.

## SPF and DMARC

SPF can participate in DMARC authentication when the authenticated domain aligns with the visible sender domain.

See [Domain Verification](/docs/domains/verification), [DKIM](/docs/domains/dkim), and [DMARC](/docs/domains/dmarc) for the complete domain authentication flow.