> For the complete documentation index, see [llms.txt](https://help.nightfall.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.nightfall.ai/microsoft-exchange/getting_started/installing-microsoft-exchange/create-mx-record.md).
# Create MX Record
This process helps Nightfall identify your Exchange online account in Microsoft. This process is executed in the Nightfall console.
### Prerequisites
You must execute the following steps to obtain domain name and MX record.
1. In the Microsoft 365 Admin portal, expand **Settings** and select **Domains**.
2. Note the Domain name of your organization.
3. Click the domain name and select the **DNS records** tab.
4. Navigate to the **Microsoft Exchange** section and click **MX**.
5. Copy the URL under the **Points to address or Value** column. This is the MX record.
## Installation Steps
1. Open the **Nightfall app** and navigate to **Integrations**.
2. Click **Manage** for the **Exchange Online** widget.
3. Click **Edit MX** record for **Exchange Online**.
4. In the **Domain name** field enter the domain name obtained in the previous section.
5. In the **MX Record Submission** field, enter the MX record value obtained in the previous section.
6. Click **Add**.
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