Update dns_config.md

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Alexandre Aubin 2020-06-27 15:22:31 +02:00 committed by GitHub
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@ -90,7 +90,9 @@ lookup](https://en.wikipedia.org/wiki/Reverse_DNS_lookup) for your public IPv4
and/or IPv6 addresses, you must configure it. It will prevent you to be marked as
spam by anti-spam filters.
It means that if your public IPv4 address is `111.222.333.444` and your DNS
**N.B. : the reverse DNS configuration happens on your Internet Service Provider or VPS provider. It is *not* handled by your domain's registrar.**
If your public IPv4 address is `111.222.333.444` and your DNS
domain is `domain.tld`, you should get following answer when using `nslookup`
command tool:
@ -99,8 +101,7 @@ $ nslookup 111.222.333.444
444.333.222.111.in-addr.arpa name = domain.tld.
```
Most of the time, this setting is located in a dedicated section or could need
a support request to your ISP or VPS provider.
The diagnosis system available in the webadmin performs this checks automatically (in section Email).
### Dynamic IP