Jul.04
How Office 365 manages DNS records for mail service?
When you set up Office 365, you might have a choice between managing your own DNS records at your DNS hosting provider and having Office 365 create and manage the DNS records for your domain. I definitely recommend letting your existing hosting provider or domain registrar to manage your records, because in case you decide to host MX records outside of Office 365 , it will not be possible. Simply, you can’t change your DNS records to host email outside of Office 365.