Exchange administrators are accustomed to looking through mailbox audit logs to find details of events. Those same events are in the Office 365 audit log, so that’s the place to go look for information, like when you want to find out who sent a message from a shared mailbox using the SendAs permission.
If you run a hybrid Exchange deployment, you probably have some on-premises distribution lists that you’d like to move to the cloud. Office 365 offers no way to do this, so it’s up to PowerShell. Instead of starting from scratch, you can use a script created by Tim McMichael of Microsoft and amend it to meet your needs. PowerShell is just great.
Microsoft has released a preview of the cmdlet set to allow tenants to create and manage protocol authentication policies for Exchange Online. It’s a great chance to disable basic authentication and reduce the attack surface for password spraying.
Microsoft issued Message Center update MC151582 to tell Exchange Online administrators about a new default value for automatic processing of events sent to room mailboxes. Unfortunately, the PowerShell code in the update contains an error, so here’s some fixed code to check existing values and to set them to the new default, if you want to do that.
Microsoft has confirmed that they will not release a free hybrid license for Exchange 2019. That’s OK, because if you want to use Exchange 2019 as the HCW host, you simply assign the server one of your licenses. After all, the server won’t simply be running hybrid connectivity, will it?
A little known fact is that you can use graphic symbols and characters in Office 365 labels. It might bring a splash of color to your compliance and retention efforts, especially in a world where emojis are everywhere. After all, the symbols are just character codes that computers can process and Office 365 is designed to be multilingual and cope with different character sets (like the way Teams deals with Hebrew and Arabic).
Search-Mailbox is a very useful cmdlet but running the cmdlet can be very dangerous as you might end up permanently removing some data that you’d prefer to keep. And in the cloud, there’s no backups…
Microsoft has released a new setting in the tenant Information Rights Management (IRM) configuration to control if attachments of messages encrypted with the Encrypt Only feature (in OWA and Outlook) are decrypted when downloaded. In fact, two settings are available. One for people with Azure AD accounts, and one for those without.
The Search-Mailbox cmdlet is very powerful when it comes to removing items from Exchange Online mailboxes, but it can’t deal with other Office 365 content.