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Update 'content/posts/howto/protect-domain-name-without-email.md'

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Olivier 2023-01-07 00:19:50 +01:00
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content/posts/howto/protect-domain-name-without-email.md
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@ -27,26 +27,33 @@ cover:
#### Null MX
Explicitly configure an 'empty' MX record according to [RFC7505](https://tools.ietf.org/html/rfc7505).
```
example.com. IN MX 0 .
@ 1800 IN MX 0 .
```
#### SPF
Set an an empty policy and a hard fail.
```
example.com. IN TXT "v=spf1 –all"
@ 1800 IN TXT "v=spf1 -all"
```
#### DKIM
```
*._domainkey.example.com. IN TXT "v=DKIM1; p="
*._domainkey 1800 IN TXT "v=DKIM1; p="
```
#### DMARC
Set DMARC policy to reject mails, but allow reporting to take place.
Set DMARC policy to reject emails[^1]
```
_dmarc.example.com. IN TXT "v=DMARC1; p=reject; rua=mailto:rua@example.com; ruf=mailto:ruf@example.com"
_dmarc 1800 IN TXT "v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s;fo=1;"
```
or
Set DMARC policy to reject mails, but allow reporting to take place[^2]
```
_dmarc 1800 IN TXT "v=DMARC1; p=reject; rua=mailto:rua@example.com; ruf=mailto:ruf@example.com"
```
## DNS entries for a parked domain that does not send emails
@ -55,5 +62,6 @@ _dmarc.example.com. IN TXT "v=DMARC1; p=reject; rua=mailto:rua@example.com; ruf=
* Don't redirect from parked domain `example.com` to the used domain `example.org`, since this encourages users to keep using the parked `example.com`. If a redirect is desirable, make sure to use the proper redirect order in order for HSTS headers to remain effective:
* redirect `http://example.com` to `https://example.com`
* when using `HTTPS`, redirect `https://example.com` to `https://example.org`.
---
**Credit**: akc3n’s [page of notes](https://akc3n.page/gists/#dns) and the [Dutch Internet Standards Platform](https://github.com/internetstandards/toolbox-wiki/blob/main/parked-domain-how-to.md#what-is-a-parked-domain-)
[^1]: **Credit:** akc3n’s [page of notes](https://akc3n.page/gists/#dns)
[^2]: **Credit:** the [Dutch Internet Standards Platform](https://github.com/internetstandards/toolbox-wiki/blob/main/parked-domain-how-to.md#what-is-a-parked-domain-)