RE: Is Relaxed DKIM possible?
Hello, my name is Ivan Maltsev. I am Deliverability Engineer at Microsoft Dynamics 365 Marketing.
Thank you for a good question.
In order to have proper DKIM signing in place for your emails while using Dynamics 365 Marketing platform, we offer to follow Domain Authentication process.
After your domain is added to the platform, and the process of authentication and confirmation finished, all emails sent from the specified domain will be signed with this DKIM domain to ensure alignment.
Additionally, we support set up of custom Envelop-From address, to have additional alignment between Header from and Envelope From domains. (If custom envelope-from is not set up, Envelope-From address is automatically generated by the platform for proper bounce processing and will be different comparting to the From domain).