# Domains Page

{% hint style="info" %}
**Domains**

The domains page is the first page of the MTA policy wizard. This is where you specify the receiving mailbox domain providers that the MTA policy will be applied to such as gmail, yahoo, icloud, etc. 
{% endhint %}

Give the policy a descriptive name, this is how it will show in a [postal route](/docs/introduction/postal-routes.md).

By default, a new policy will be applied to all mailbox provider domains, with the wildcard of '\*' .

<figure><img src="/files/kTLhhZ2jV4BqPogPuYbd" alt=""><figcaption></figcaption></figure>

You can make the policy apply to only one mailbox provider domain and exclude all others.

<figure><img src="/files/F18Onl0PS84SaVdK8shF" alt=""><figcaption></figcaption></figure>

You can make a policy apply to a list of multiple mailbox provider domains and exclude all others.

<figure><img src="/files/4JlDAQD6629eZNeg0fLz" alt=""><figcaption></figcaption></figure>


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
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```

The question should be specific, self-contained, and written in natural language.
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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.