You can use mailbox.org with individual domains. However, there are a few points you need to keep in mind, so please read this article carefully.
Log in to your mailbox.org Office and go to mailbox.org Settings in the settings area. The ‘Add external addresses’ option is available under ‘E-mail Aliases’. Enter the desired e-mail address.
Our system then checks the DNS data to see whether this domain already contains the mailbox.org security key. If everything is OK, the alias will be created and can be used instantly. You can then proceed to step 2 of these instructions.
If there is no DNS security key, for example, because this is the first time you are registering an e-mail address of a domain with us, the system presents you with a DNS entry. To set the DNS security key you have to create a subdomain and set the TXT record of this sub-domain. Once you have updated this entry, you can try to register your e-mail address again.
The figure below shows an example:
Note: Due to the DNS cache times, it may take several hours before a newly created security key is visible on our systems!
When our system finds the mailbox.org security key in the DNS, you can register e-mail addresses as aliases under this domain. Once you have done this and no errors have occurred, you can change your domain’s MX records so that they appear on the mailbox.org mail relays. Set the following MX records in the DNS:
example.net. IN MX 10 mxext1.mailbox.org. example.net. IN MX 10 mxext2.mailbox.org. example.net. IN MX 20 mxext3.mailbox.org.
Replace ‘example.net’ with your own domain.
Note: As soon as your MX records appear on our server, we will receive all of your domain’s e-mails. If the target mailboxes were not set as aliases on our end, our system will reject the e-mails with a failure notification (‘User unknown’)! For this reason, always create mailboxes first and then change the corresponding MX records!
SPF records should be configured in the DNS zone of your web domain. All you need to do is create an “include” statement for the SPF entries of mailbox.org. Add a TXT or SPF record for your domain with the following content:
As a result, your current configuration will inherit the SPF settings of mailbox.org. That means the IP addresses of our outgoing mail systems (which are used for sending your mailbox.org e-mails) will be passed on automatically. If you use more than one server for sending e-mails, you should extend the statement above to include their IP networks as well.
Please note that we cannot offer any further support for individual SPF setups. Also note that we tend to frown upon the use of “-all” in SPF records, when used for ordinary web domains. This is the reason, why our SPF records are set to "~all". For details on this particular issue, please consult this talk about SPF/DKIM by the Heinlein Support GmbH.
In order to enable DKIM for your embedded domain, you just need to add the following public keys as records to your DNS server.
If your provider offers a web frontend:
Subdomain: MBO0001._domainkey Ressource Record: TXT Text: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2K4PavXoNY8eGK2u61LIQlOHS8f5sWsCK5b+HMOfo0M+aNHwfqlVdzi/IwmYnuDKuXYuCllrgnxZ4fG4yVaux58v9grVsFHdzdjPlAQfp5rkiETYpCMZwgsmdseJ4CoZaosPHLjPumFE/Ua2WAQQljnunsM9TONM9L6KxrO9t5IISD1XtJb0bq1lVI/e72k3mnPd/q77qzhTDmwN4TSNJZN8sxzUJx9HNSMRRoEIHSDLTIJUK+Up8IeCx0B7CiOzG5w/cHyZ3AM5V8lkqBaTDK46AwTkTVGJf59QxUZArG3FEH5vy9HzDmy0tGG+053/x4RqkhqMg5/ClDm+lpZqWwIDAQAB
If this fails to work, please substitute all in the string above beginning with p=MIIBI.... with the strings below, including the ".
If you need to write it as a bind configuration:
MBO0001._domainkey IN TXT ( "v=DKIM1; k=rsa; " "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2K4PavXoNY8eGK2u61" "LIQlOHS8f5sWsCK5b+HMOfo0M+aNHwfqlVdzi/IwmYnuDKuXYuCllrgnxZ4fG4yV" "aux58v9grVsFHdzdjPlAQfp5rkiETYpCMZwgsmdseJ4CoZaosPHLjPumFE/Ua2WA" "QQljnunsM9TONM9L6KxrO9t5IISD1XtJb0bq1lVI/e72k3mnPd/q77qzhTDmwN4T" "SNJZN8sxzUJx9HNSMRRoEIHSDLTIJUK+Up8IeCx0B7CiOzG5w/cHyZ3AM5V8lkqB" "aTDK46AwTkTVGJf59QxUZArG3FEH5vy9HzDmy0tGG+053/x4RqkhqMg5/ClDm+lp" "ZqWwIDAQAB" )
In addition to that, we offer a backup key. Please also add this to your configuration.
Subdomain: MBO0002._domainkey Ressource Record: TXT Text: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqxEKIg2c48ecfmy/+rj35sBOhdfIYGNDCMeHy0b36DX6MNtS7zA/VDR2q5ubtHzraL5uUGas8kb/33wtrWFYxierLRXy12qj8ItdYCRugu9tXTByEED05WdBtRzJmrb8YBMfeK0E0K3wwoWfhIk/wzKbjMkbqYBOTYLlIcVGQWzOfN7/n3n+VChfu6sGFK3k2qrJNnw22iFy4C8Ks7j77+tCpm0PoUwA2hOdLrRw3ldx2E9PH0GVwIMJRgekY6cS7DrbHrj/AeGlwfwwCSi9T23mYvc79nVrh2+82ZqmkpZSTD2qq+ukOkyjdRuUPck6e2b+x141Nzd81dIZVfOEiwIDAQAB
MBO0002._domainkey IN TXT ( "v=DKIM1; k=rsa; " "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqxEKIg2c48ecfmy/+r" "j35sBOhdfIYGNDCMeHy0b36DX6MNtS7zA/VDR2q5ubtHzraL5uUGas8kb/33wtrW" "FYxierLRXy12qj8ItdYCRugu9tXTByEED05WdBtRzJmrb8YBMfeK0E0K3wwoWfhI" "k/wzKbjMkbqYBOTYLlIcVGQWzOfN7/n3n+VChfu6sGFK3k2qrJNnw22iFy4C8Ks7" "j77+tCpm0PoUwA2hOdLrRw3ldx2E9PH0GVwIMJRgekY6cS7DrbHrj/AeGlwfwwCS" "i9T23mYvc79nVrh2+82ZqmkpZSTD2qq+ukOkyjdRuUPck6e2b+x141Nzd81dIZVf" "OEiwIDAQAB" )
DMARC specifies how receiving servers verify e-mails send from your domain using our servers.
A DMARC-Entry can look like this:
Important options are:
|ruf||forensic report will be send to:|
|rua||aggregated report will be send to:|
|p||how to handle e-mails of main domain|
Please note that if the options are set too strict your e-mails may be rejected by the receiving server. Sometimes forwardings can also break a DKIM signature.
If you want to give DMARC a try we recommend to use our example above and check the incoming reports before you further adjust your settings.
If you would like to use the auto-configuration assistants offered by e-mail clients like Thunderbird or KMail, then you can do so by referring to an autoconfig XML file that is available on our web server. The easiest way to get this done is to add a reference in two particular DNS records for your domain name. These are the CNAME and the SRV records.
Set the following CNAME record to enable automatic e-mail configuration:
autoconfig IN CNAME mailbox.org.
Set the following SRV record to enable automatic e-mail configuration:
_autodiscover._tcp IN SRV 0 0 443 mailbox.org.
Alternatively, you can upload an XML file that contains the required autoconfig data to your own web server. Please note the required location and naming conventions: https://autoconfig.example.net/mail/config-v1.1.x...
We have a template for this XML file, which you can simply obtain by opening it with a browser or using either this command:
curl -o config-v1.1.xml https://mailbox.org/mail/config-v1.1.xml
or that one:
All you need to do is insert the corresponding entries for <domain>, <displayName> and <displayShortName>. Please see the example below:
<clientConfig version="1.1"> <emailProvider id="mailbox.org"> <domain>exmaple.net</domain> <displayName>example.net Mailserver (Beschreibung)</displayName> <displayShortName>EGCOM (Kürzel, z.B. Initialen)</displayShortName> <incomingServer type="imap"> [...]
No. mailbox.org is intended for anonymous use. Since we would need your address data for a domain registration, this would be in conflict with our “anonymous use” policy. In addition, mailbox.org works as a prepaid system, and if we were to register domains, the risk would be too great that complications would arise and we would have to delete them at some stage.
No. Changing the DNS MX records means that all e-mail traffic runs exclusively through mailbox.org. It is not possible to redirect individual e-mail addresses to us. However, you could still use the option to have e-mail addresses from other providers as senders.
This option requires a certain amount of technical expertise regarding how domains work which includes knowing what DNS is. If you have purchased your own domain, you will probably have done that through a specific provider (registrar). Contact your registrar for help with setting up your DNS for mailbox.org
No. Please contact the provider that you purchased your domain at.
You can switch at any time. Change your domain’s MX records to the desired new provider and don’t forget to delete the created aliases from your mailbox.org account.
Yes, that's possible. Have a look at the article using catch-all alias with your own domain.
Yes. As far as mailbox.org is concerned, the aliases created under your own domain are normal aliases. The possible number varies depending on the package. Please refer to our table of packages. If you create additional aliases, it may be necessary to switch to a better mail package when your permitted aliases are no longer sufficient.
NOTE: Aliases for username postmaster@, abuse@, hostmaster@ and webmaster@ are not counted and is for free.
Yes. While in principle, a domain name will always allow others to retrieve related ownership information using a registrar website or other whois-database, there is a way to remain anonymous by hiding this information behind a „whois-proxy server“.
Many ordinary domain providers in Germany are offering this kind of service to customers. For instance, the company „CPS Datensysteme“ has proxies covering more than 200 different top-level domains:
Internationally, there are a number of reliable (!) providers that allow anonymous domain registration:
Yes and No. mailbox.org has been designed for use by freelancers or small businesses. If there are several people who want to use email accounts with the same domain name, each of them will need their own mailbox.org account. For each of these accounts a security key needs to be added to your DNS entries. Unfortunately shared calendars and address books cannot yet be used in such configurations.
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