Knowledge base

This guide explains how to replace or change the primary domain name linked to a Mail bundle (inverting the domain name linked to the Mail hosting).

Requirement

If the new domain name or its DNS zone is managed by Infomaniak, everything is OK. If not:

• the MX record of the domain name must point to Infomaniak (help)
• to prevent this approach from causing a failure of email traffic, the MX record of the domain name must have been pointing to Infomaniak for at least 48 hours
• to make things simpler, you can trust us with the management of your domain name

To understand how a domain name works: https://www.infomaniak.com/en/support/faq/2026/how-a-domain-name-works-dns-dns-zone-a-record-mx-record

N.B.: if current configurations already exist, you must transfer the changes made in these different configurations: WorkSpace (click here), Outlook or other IMAP software (click here), etc.

Replacing the domain name linked to the emails

1. open the Manager (manager.infomaniak.com)
2. go to Mail Hosting
3. click on the hosting/domain name concerned
4. in the left side menu click on Linked domains
5. add the required domain name. Tick the following boxes:
   • Update DNS entries for this domain
   • Replace existing entries
6. once it has been added, click on the menu to the right of the name and choose Set as primary domain
7. once it has been inverted, click on the menu to the right of the old domain name, which has become an alias domain, in order to delete it