Microsoft 365 ATP: Anti-Phishing Policy/Sender Domain Hygiene (Lessons from the Field)

I was recently working on a project implementing Microsoft Advanced Threat Protection (ATP) on Office 365 services for one of our clients and have come across a few lessons learnt that hopefully might become useful for others out there & also looking into this great new feature from Microsoft!
LESSON 1: ATP Anti-Phishing Policy Not Working due to existing Spam policies
We created a new ATP Anti-Phishing policy where we added a bunch of Executive team users to protect them from being impersonated by attackers under “Add Users to Protect” setting.… [Keep reading] “Microsoft 365 ATP: Anti-Phishing Policy/Sender Domain Hygiene (Lessons from the Field)”