Step 1:

The domain and the email addresses for which you want to change the MX record must be set up on the destination server. If not, the emails will not be delivered. After the change it could take up to 3 or 4 hours until the new settings are active.

To get the MX records to work properly and to avoid local email deliveries, all email addresses, email forwardings and mailings lists of the affected domain must be deleted inside the KAS (Technical Administration) panel.

Log in to your KAS (Technical Administration) panel and click on Tools -> DNS Settings.

Click the Edit icon right next to the domain and then click on Add a new DNS record.

Step 2:

The Name field remains blank. The Type is MX. Then you need to specify the Priority. Then enter the new mail host address in the Data field. The host address must end with a dot. Click the Save button.

Step 3:

The new entry will now show up in the table. Now you need to delete the default MX record that points to <your-login>.kasserver.com, so simply click the Trash icon right next to the default MX record.

In the case that multiple MX records need to be entered, you can now add them.