dnscontrol/documentation/language-reference/domain-modifiers/SMIMEA.md

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---
name: SMIMEA
parameters:
- name
- usage
- selector
- type
- certificate
- modifiers...
parameter_types:
name: string
usage: number
selector: number
type: number
certificate: string
"modifiers...": RecordModifier[]
---
`SMIMEA` adds a `SMIMEA` record 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 %}