We just went down the rabbit hole of trying to migrate to Microsoft 365 Family with custom domain. You (officially) need to move your domain to GoDaddy, which was unfortunately a blocker for us as they don’t support our domains TLD.
From what I read DKIM also isn’t offered on Family which is disappointing. Business plans get expensive quickly when you want Office apps as well.
I found some info on setting up DNS for other providers, but it isn’t officially supported and for something as important as email I don’t want them randomly breaking it one day, which they could since they expect all customers to be configured through their API integration with GoGaddy. No need to advise in advance of MX host changes etc when it’s supposed to be entirely managed by them.
I understand their target demographic here might not be super technical, so the deep integration with godaddy makes sense, but would be nice for a supported advanced user pathway too.
From what I read DKIM also isn’t offered on Family which is disappointing. Business plans get expensive quickly when you want Office apps as well.