Office365 DKIM signing

5th October 2023

Where did M$ move it this week?

https://security.microsoft.com/authentication?viewid=DKIM

In the Microsoft 365 Defender portal at https://security.microsoft.com, go to Email & Collaboration > Policies & Rules > Threat policies > Email Authentication Settings in the Rules section >DKIM

if you didn’t publish the correct CNAME record M$ will prompt you with this msg