# SMIMEA

`SMIMEA` adds an [S/MIME cert association record](https://www.rfc-editor.org/rfc/rfc8162) to a domain. The name should be the hashed and stripped local part of the e-mail.

To create the name, you can the following command:

```bash
# For the e-mail bosun@bosun.org run:
echo -n "bosun" | sha256sum | awk '{print $1}' | cut -c1-56
# f10e7de079689f55c0cdd6782e4dd1448c84006962a4bd832e8eff73
```

Usage, selector, and type are ints.

Certificate is a hex string.

To create the string for the type 0, you can run this command with your S/MIME certificate:

```bash
openssl x509 -in smime-cert.pem -outform DER | xxd -p -c 10000
```

{% code title="dnsconfig.js" %}

```javascript
D("example.com", REG_MY_PROVIDER, DnsProvider(DSP_MY_PROVIDER),
  // Create SMIMEA record for certificate for the name bosun
  SMIMEA("f10e7de079689f55c0cdd6782e4dd1448c84006962a4bd832e8eff73", 3, 0, 0, "30820353308202f8a003020102..."),
);
```

{% endcode %}


---

# 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:

```
GET https://docs.dnscontrol.org/language-reference/domain-modifiers/smimea.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

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.