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Answers for companies

The Business Knowledge Base is already largely up to date. A few individual articles are currently being revised and adapted. We thank you for your understanding and look forward to providing you with up-to-date information on using mailbox.

Please note: The knowledge base has changed slightly. Categories have been adapted and URLs stored in the old knowledge base may no longer be valid.

How to set up my domain name

Set up a domain for mailbox Business​

To use your Business account with mailbox, you must set up your domain first.
Please start by adding the security key to your domain. To do this, log in to the Console at mailbox Login and enter the name of your domain in the Domain name field (without www).

As soon as you click Create, you will receive an error message indicating that the security key is missing. The security key will be displayed in this error message. Please add this security key in the domain management of your domain host (not at mailbox). To do so, create the displayed subdomain (hostname) there and set the indicated TXT record below the subdomain.

Only after this security key has been entered into the DNS can you return to the Console and add the domain permanently. Due to technical reasons, it may take up to 24 hours for our servers to verify your DNS entry. You must wait until then before proceeding with the next step.

Set MX records in DNS settings​

After you have successfully added your domain in the Console, the next step is to adjust the MX records for your domain, which must point to mailbox.

Please set the following three MX records in the DNS settings of your domain provider and replace example.net with your own domain:

  • example.net. IN MX 10 mxext1.mailbox.org.
  • example.net. IN MX 10 mxext2.mailbox.org.
  • example.net. IN MX 20 mxext3.mailbox.org.

Attention​

Once your MX records point to our servers, our systems will receive all mails for your domain.
If the corresponding mailboxes have not been created with us beforehand, these mails will be rejected as undeliverable (User unknown).

Therefore, the rule is: Create mailboxes first, then change MX records!

Tip: By setting up a catch-all mailbox, you can receive all mails sent to your domain that are not assigned to a specific mailbox.

Improve spam reputation​

After you have set up your domain with mailbox as described above, you should also take a look at the article on how to improve the spam reputation of your domain.
If you configure SPF, DKIM, and DMARC as described there, fewer of your mails are at risk of being classified as spam by recipients.

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