---
title: "Configure DNS Settings for Opensense"
slug: "dns-entries-must-have"
tags: ["SPF", "DNS", "Hyperlinks"]
updated: 2025-09-05T14:56:53Z
published: 2025-09-05T14:56:53Z
canonical: "help.opensense.com/dns-entries-must-have"
stale: true
---

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

# Required DNS Settings for Opensense

To ensure proper email branding and deliverability, all Opensense customers must configure specific DNS records.

> [!WARNING]
> These updates should be applied to both **external** and, if applicable, **internal DNS** environments.

🚨 Have Cloudflare? [Click here for CNAME Cloudflare Proxy Settings](https://opensense.document360.io/docs/cname-cloudflare-proxy-settings) 🚨

## Why This Is Important

- **Consistent and secure brand presentation** across emails.
- **Improved email deliverability** and authentication alignment.
- **Support for Opensense's email signature and tracking infrastructure.**

## DNS Records Required by Opensense

### 1. **CNAME Record** *(New Entry)*

**Instructions:**

- Create a new CNAME record:

| Record Type | Host/Name | Points To / FQDN / Target Value |
| --- | --- | --- |
| CNAME | `smart` | `whs.sendergen.com` |

### 2. **SPF Record** *(Modify Existing TXT Record)*

| Record Type | Host/Name | Value | Example |
| --- | --- | --- | --- |
| TXT (SPF) | `@` or your domain root (e.g. `customer.com`) | `include:_spf.sendergen.com` | `v=spf1 include:_spf.google.com include:_spf.sendergen.com ~all` |

**Instructions:**

- Locate your current SPF TXT record (typically begins with `v=spf1`).
- The underscore in `_spf.sendergen.com` is **critical**—ensure it is not omitted.
- Add the following include statement to the existing entry:

```plaintext
include:_spf.sendergen.com
```

> [!WARNING]
> Warning
> 
> Do not create a separate SPF record. There must only be one **v=spf1** TXT record at the root level of each domain.

## Related Articles

- [How to Check Your DNS Records](https://opensense.document360.io/docs/how-to-check-your-dns-records)
- [Splitting a long SPF TXT record](https://opensense.document360.io/docs/splitting-a-long-spf-txt-record)
- [CNAME Cloudflare Proxy Settings](https://opensense.document360.io/docs/cname-cloudflare-proxy-settings)

## Opensense Support

For further assistance, contact Opensense Support:

- Email: help@opensense.com
- Knowledge Base: help.opensense.com