DNS Administration

Last change on 2021-06-02 • Created on 2020-01-20

What is DNS Administration?

DNS stands for Domain Name System. This is responsible for assigning a domain name to an IP address. For example, the domain name «mydomain.com» translates to the IP address 123.123.123.123 (hypothetical example). An IP address is a world-wide unique number combination which is assigned to a server on the Internet.

With the help of DNS Administration on konsoleH, you can change the entries in the DNS system and therefore control how your domain is addressed on the Internet.

Please note: False DNS entries can cause problems with your website and mail system. Before you make any changes, please make sure that you know exactly what you are changing and what the consequences of the changes are for your domain.

Adding an entry (Record)

With DNS Administration, you can add new DNS entries (Records). Click on the 'Add' link. After you save the entry, it will appear in the overview.

Restoring DNS settings

This function restores your original DNS entry settings again. You will choose all changes you made.

What are "A records" and "CNAME records"?

An A record always points to an IP address.

A CNAME record always points to another host name. This way, you can define aliases for host names.

When you create a CNAME record, pay close attention to whether or not there is a '.' at the end of the host name. If the host name does not end in a "." the domain name is also added.

For example:

smtp IN CNAME mail.isp.com

is the same as

smtp IN CNAME mail.isp.com.mydomain.com.

for the domain "mydomain.com".

mail.isp.com should end in an additional period (mail.isp.com.) to prevent the domain name from being added.

What are MX records?

An MX record assigns one or more mail servers to a domain name; these mail servers are responsible for sending and receiving mail. MX records are always host names. If you wish to use an IP, you must first create a host name for this IP and then use this host name for the MX record.

It is possible to specify several MX records. Each of these records has a particular priority. If a connection to the mail server is to be established, the record with the lowest preference will be used first. If this is not obtainable, the MX record with the second lowest preference will follow, etc. If the preferences are the same, a random decision will be made.

What are NS records?

An NS record (nameserver entry) assigns a particular number of different nameservers to a domain, and these nameservers are responsible for this domain.

Warning: When changing NS records, it is very important to update the domain with the correct registrar!

What are TTL values?

TTL (Time To Live) values specify how long the domain entry is valid before the nameservers are prompted to reload the zone file. This influences how quickly the changes to the zone file are distributed across the Internet. The unit of time is shown in seconds.

Please note that the domain can also have its own TTL value. You can change this in the 'Advanced view'.

Basic view and Advanced view

There are two different views for DNS Administration. The 'Basic view' allows you to easily make changes to individual records. In the 'Advanced view', you can change the entire zone file in a text box. This is particularly convenient if you wish to make several changes at once.

Please note: Only use the 'Advanced view' if you are a domain administrator who has experience in handling zone files.

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