Office 365 Email Authenticity - Opinions

I am looking for someone knowledgeable on confirming email authenticity related to emails sent via an Office 365 account. If you are prepared to offer up a voice recorded discussion/or interview with me on this topic sometime over the next 24 hours, I can provide you with some good public exposure/awareness of you/your business etc.. I can provide everything necessary from the Office 365 end for you to conduct an analysis on a specific email thread - also happy for you to speak generally about spoofing and the protections built in to Office 365 (DKIM) and other email protocols.