Especially if you need special settings for the e-mail reception, changes or additions to the DNS settings of the domain are necessary. For this purpose you have the possibility to make adjustments to the resource entries of your domain in the customer center via the menu items Domains --> Manage domain --> Additional packages --> DNS management (Manage).
Please note that this option is only available if the domain was registered through us or transferred to us and the DNS management option was selected when ordering. However, a subsequent activation is also possible. Please contact our support via email at firstname.lastname@example.org or simply use the contact form in the customer center.