How To Whitelist An Email In Office 365. Something simple such as whitelist suffices. Ip whitelisting in office 365, you’ll use their “connection filter” options:
Login to office 365 security and compliance center as admin and navigate to threat management > mail filtering. Type in the email address or domain you want to whitelist for office 365 and then press ok. Click the plus + symbol and add the first ip and click ok(find our current ip.
Go to permissions > admin roles > click “+”.
Click in the feature pane on protection and click spam filter in the tabs. Type in the email address or domain you want to whitelist for office 365 and then press ok. Go to permissions > admin roles > click “+”. After you've logging into the office 365 admin portal.