How To

What’s the Real Size of Exchange Online Mailboxes?

by Tony Redmond

The Office 365 Substrate uses Exchange Online mailboxes to store a lot of data that users never see. The data is used by the substrate for different purposes, mostly to make it easier for features to get to relevant information. Microsoft doesn't document exactly what is stored, where it is stored, and how it is used, so we must poke around in the innards of mailboxes to see what we can discover.

How Exchange Online Processes Journal Reports for Protected Email

by Tony Redmond

Office 365 tenants often want to journal email from Exchange Online mailboxes. Things become a little more complicated when protected email is involved, but Exchange can decrypt protected messages and create journal reports with attachments containing the original encrypted message and a decrypted copy. That should be enough for journaling systems to process the journal reports and import messages into their repositories.

Using Formatting Files with PowerShell 7

by Adam Bertram

Any terminal output in PowerShell is controlled by formatting files. Oftentimes, it is very useful to display more information about a given object than the default views offer. Since the early days of PowerShell, there has been an option to modify this display by using Format.ps1xml files. The biggest change to formatting, in recent years,… Read More

How to Use Windows Package Manager

by Russell Smith

Microsoft recently announced at Build 2020 that it is working on a native open-source package manager for Windows. Due to hit general availability in May 2021, Windows Package Manager is now accessible on GitHub and for Windows Insiders in preview. In this article, I will show you how to use Windows Package Manager (WPM) to… Read More

Enforce MFA for SharePoint Online Sites with Conditional Access Policies

by Tony Redmond

Securing Confidential SharePoint Online Data SharePoint Online sites hold some very confidential information. Now that SharePoint Online supports sensitivity labels, you can protect individual documents with encryption to stop their contents leaking. Other features, like regarding newly uploaded documents sensitive by default to stop them being shared externally until Data Loss Prevention (DLP) processing completes,… Read More

Stop OWA Users Autoforwarding Email

by Tony Redmond

Autoforwarding is Badness Allowing users to forward their email outside Exchange Online is bad, especially if they don’t keep a copy of the forwarded messages in their mailbox. Apart from removing email from the controls imposed by data governance policies, it creates a risk that confidential information travels outside the organization, including when an attacker… Read More

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