Topic

Guest Access

M365 RoundupEmail & Collaboration Security

M365 Roundup, May 2021: Lighthouse Slips Into Business Premium

May 2021 for MSPs: the Microsoft 365 Lighthouse service plan lands in Business Premium, external group chat hits GA with 250 participants, and reply-all storm protection becomes tunable.

Nick RossMay 31, 2021

Office 365 inter-tenant collaboration: Sharepoint and OneDrive

Email & Collaboration Security

Sharing SharePoint and OneDrive Files With Outside Organizations Safely

External sharing is on by default across SharePoint Online. Here are the four sharing modes, how authenticated and anonymous external sharing actually work, and where to lock it down.

Nick RossJul 2, 2018

Office 365 inter-tenant collaboration: Exchange

Email & Collaboration Security

Two Ways to Let Office 365 Tenants Share Calendars: Sharing Policies vs. Org Relationships

Inter-tenant collaboration in Exchange Online comes down to two controls: user-level sharing policies and organization relationships. Here is what each one does and where to set it.

Nick RossJun 12, 2018