In the past years I have time by time written guest articles on other blogs. Here you can find them without searching across the internet:

	HOW TO SMITE SPAM WITH SPF, DKIM, AND DMARK: A GUIDE FOR EMAIL ADMINS
	AZURE AD PASS-THROUGH VS. ADFS: WHICH DO WE USE FOR AUTHENTICATION?
	EXCHANGE SERVICES DISABLED? HERE’S HOW TO TURN THEM BACK ON
	Exchange Online Protection (EOP)
	Outlook Troubleshooting: Fixing Calendar Issue
	Goodbye Unified Messaging… What Now?