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Add instructions about creating a AAAA record

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Jeremy Fleischman 2024-12-16 17:35:11 +00:00 committed by lewo
parent e4aabd3de6
commit 6db6c0dc72
1 changed files with 19 additions and 8 deletions
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docs/setup-guide.rst
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@ -20,25 +20,30 @@ an up and running mail server. Once the server is deployed, we could
then set all DNS entries required to send and receive mails on this then set all DNS entries required to send and receive mails on this
server. server.
Setup DNS A record for server Setup DNS A/AAAA records for server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Add a DNS record to the domain ``example.com`` with the following Add DNS records to the domain ``example.com`` with the following
entries entries
==================== ===== ==== ============= ==================== ===== ==== =============
Name (Subdomain) TTL Type Value Name (Subdomain) TTL Type Value
==================== ===== ==== ============= ==================== ===== ==== =============
``mail.example.com`` 10800 A ``1.2.3.4`` ``mail.example.com`` 10800 A ``1.2.3.4``
``mail.example.com`` 10800 AAAA ``2001::1``
==================== ===== ==== ============= ==================== ===== ==== =============
If your server does not have an IPv6 address, you must skip the `AAAA` record.
You can check this with You can check this with
:: ::
$ ping mail.example.com $ nix-shell -p bind --command "host -t A mail.example.com"
64 bytes from mail.example.com (1.2.3.4): icmp_seq=1 ttl=46 time=21.3 ms mail.example.com has address 1.2.3.4
...
$ nix-shell -p bind --command "host -t AAAA mail.example.com"
mail.example.com has address 2001::1
Note that it can take a while until a DNS entry is propagated. This Note that it can take a while until a DNS entry is propagated. This
DNS entry is required for the Let's Encrypt certificate generation DNS entry is required for the Let's Encrypt certificate generation
@ -98,8 +103,11 @@ Set rDNS (reverse DNS) entry for server
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Wherever you have rented your server, you should be able to set reverse Wherever you have rented your server, you should be able to set reverse
DNS entries for the IP’s you own. Add an entry resolving ``1.2.3.4`` DNS entries for the IP’s you own:
to ``mail.example.com``.
- Add an entry resolving IPv4 address ``1.2.3.4`` to ``mail.example.com``.
- Add an entry resolving IPv6 ``2001::1`` to ``mail.example.com``. Again, this
must be skipped if your server does not have an IPv6 address.
.. warning:: .. warning::
@ -115,6 +123,9 @@ You can check this with
$ nix-shell -p bind --command "host 1.2.3.4" $ nix-shell -p bind --command "host 1.2.3.4"
4.3.2.1.in-addr.arpa domain name pointer mail.example.com. 4.3.2.1.in-addr.arpa domain name pointer mail.example.com.
$ nix-shell -p bind --command "host 2001::1"
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.2.ip6.arpa domain name pointer mail.example.com.
Note that it can take a while until a DNS entry is propagated. Note that it can take a while until a DNS entry is propagated.
Set a ``MX`` record Set a ``MX`` record