## Create a sending domain restriction

`email_security.settings.sending_domain_restrictions.create(SendingDomainRestrictionCreateParams**kwargs)  -> SendingDomainRestrictionCreateResponse`

**post** `/accounts/{account_id}/email-security/settings/sending_domain_restrictions`

Creates a new sending domain restriction to enforce TLS requirements for a domain. Emails without TLS from this domain will be dropped unless the subdomain is in the exclude list.

### Parameters

- `account_id: str`

  Identifier.

- `domain: str`

  Domain that requires TLS enforcement.

- `exclude: Sequence[str]`

  Excluded subdomains that are exempt from TLS requirements.

- `comments: Optional[str]`

### Returns

- `class SendingDomainRestrictionCreateResponse: …`

  A sending domain restriction that enforces TLS (Transport Layer Security) requirements for emails from specific domains. If TLS is required, mail without TLS from the specified domain will be dropped.

  - `id: Optional[str]`

    Sending domain restriction identifier.

  - `comments: Optional[str]`

  - `created_at: Optional[datetime]`

  - `domain: Optional[str]`

    Domain that requires TLS enforcement.

  - `exclude: Optional[List[str]]`

    Excluded subdomains that are exempt from TLS requirements.

  - `last_modified: Optional[datetime]`

    Deprecated, use `modified_at` instead. End of life: November 1, 2026.

  - `modified_at: Optional[datetime]`

### Example

```python
import os
from cloudflare import Cloudflare

client = Cloudflare(
    api_token=os.environ.get("CLOUDFLARE_API_TOKEN"),  # This is the default and can be omitted
)
sending_domain_restriction = client.email_security.settings.sending_domain_restrictions.create(
    account_id="023e105f4ecef8ad9ca31a8372d0c353",
    domain="example.com",
    exclude=["subdomain.example.com"],
)
print(sending_domain_restriction.id)
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "id": "f174e90a-fafe-4643-bbbc-4a0ed4fc8415",
    "comments": "Enforce TLS for all mail from this domain",
    "created_at": "2014-01-01T05:20:00.12345Z",
    "domain": "example.com",
    "exclude": [
      "subdomain.example.com"
    ],
    "last_modified": "2014-01-01T05:20:00.12345Z",
    "modified_at": "2014-01-01T05:20:00.12345Z"
  }
}
```