> ## 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.

# DKIM

> Configure DomainKeys Identified Mail for a Dugble sending domain.

DKIM signs outgoing email so receiving mail systems can verify that a message was authorized by the sending domain and was not modified in transit.

## How Dugble uses DKIM

When you add a sending domain, Dugble provisions the domain with the email provider and returns the DNS verification records required for that domain. DKIM records appear in the domain's `records` array with `record` set to `DKIM`.

Each record includes the DNS `name`, `value`, `type`, verification `status`, and `ttl`.

## Publish every DKIM record

Add each DKIM record to the DNS zone for your domain exactly as returned by Dugble.

<Warning>
  Do not rewrite or shorten the record value. If your DNS provider automatically appends the domain name to the host field, enter only the portion it expects to avoid creating a duplicated domain name.
</Warning>

## Verify the records

After the records are published, request a domain verification check:

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

Dugble returns the updated domain and the current status of each verification record.

## DNS propagation

DNS updates can take time to propagate. A newly added DKIM record may remain `pending` until the change becomes visible to the provider.

Do not repeatedly delete and recreate records while propagation is in progress. Confirm the host and value first, then allow time for DNS caches to refresh.

## DKIM and DMARC

DKIM is one of the authentication mechanisms DMARC can use to evaluate a message. After your sending domain is verified, configure an appropriate DMARC policy for your domain.

See [Domain Verification](/docs/domains/verification) and [DMARC](/docs/domains/dmarc) for the broader setup flow.