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DNS: Added Note to PTR Records

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This commit is contained in:
Marten B. Kante
2026-07-07 03:38:52 +02:00
parent ef37b60318
commit 93ac2dd35e
2 changed files with 6 additions and 2 deletions
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6
wiki/dns.md
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@@ -112,5 +112,7 @@ Its basic structure is the following.
Where `<ip>` is the reverse DNS representation of an IP address, `<hostname>` is the canonical Where `<ip>` is the reverse DNS representation of an IP address, `<hostname>` is the canonical
hostname and `PTR` is the constant for the type of the record. hostname and `PTR` is the constant for the type of the record.
PTR records are part of the reverse DNS namespace and are usually managed by the PTR records are part of the reverse DNS namespace and are usually managed by the owner of the IP
owner of the IP address rather than the owner of the domain. address rather than the owner of the domain.
Therefor, they usually have to be set on the domain management website or (if accessible) directly
in the DNS server.

2
wiki/email.md
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@@ -92,6 +92,8 @@ p=reject
The server's IP address should resolve back to the mail host. The server's IP address should resolve back to the mail host.
This is done using a [PTR record](/wiki/dns.md#ptr-record). This is done using a [PTR record](/wiki/dns.md#ptr-record).
Please note that PTR records can not be set as easily as normal DNS records as explained in
[the corresponding section of the DNS entry](/wiki/dns.md#ptr-record).
```txt ```txt
<server-ip> PTR mail.<domain>. <server-ip> PTR mail.<domain>.