Hey @daniel-bouganim
you just have to create the MX dns records on your domain
On Appdrag go to MY DOMAINS > click on the cog icon near your domain > DNS Editor
there create all the MX records as explained in this article for Office365:
https://learn.microsoft.com/en-us/microsoft-365/admin/get-help-with-domains/create-dns-records-at-any-dns-hosting-provider