There are many ways in which you can improve the security of your Exchange Online environment. In this article, Sean McAvinue details the most important steps that admins can immediately implement to align Exchange Online tenants with a good security baseline and posture.
Ten years after its launch, backing up Office 365 data is more difficult than ever before. Apps are more complex and interconnected and APIs aren't available. What should an Office 365 administrator do to protect tenant data. Here's some thoughts on the challenges and why Microsoft needs to do more to help in this space.
Microsoft has announced that they won't support the Azure AD Graph after June 30, 2022. This means that the Azure AD PowerShell module won't be supported either. With that in mind, it's probably a good idea to think about how to upgrade scripts to use Graph API calls instead of Azure AD cmdlets. In this article, we take a script created to count members in distribution lists and convert it to use the Graph. As it turns out, the Graph bit is easy. It's all the housekeeping beforehand that takes the time.
This is the third article in a continuation of our weekly series celebrating the 10-year anniversary of Office 365. Microsoft MVP Nicolas Blank shares his experience as a Microsoft Certified Master for Exchange 2010, and how his world changed drastically over the past ten years as he followed Exchange into the Cloud.
Microsoft MVP Paul Robichaux shares his personal experience getting to the cloud with Office 365 after the Exchange Labs dogfood program; Lync and SfB, and the eventual advent of Teams.
It's a good idea to replace older calls to the Get-Mailbox cmdlet with Get-ExoMailbox. However, it's not just a matter of cut and paste updates. In some cases, the nature of the new REST-based cmdlets mean that some additional care is necessary to ensure that the updated code works as expected. As we examine in this article, filters are just one example where some attention to detail is needed to make sure Exchange Online delivers the right set of mailbox data.
If you prefer to run Exchange Server setup for new installations or cumulative updates using the GUI rather than the command line, then you aren’t alone, and if you are finally getting round to removing an Exchange Server 2010 or 2013 Hybrid and replacing it with Exchange Server 2016, then it’s better late than never. […]
An earlier article explained how to create organizational contacts in user mailboxes with Graph API calls. This article builds on that idea with three improvements. First, we select target mailboxes for update by looking for those added in the last month. Second, we allow any mail-enabled recipient to be added as an organizational contact. Third, we incorporate some code to check if a contact already exists in a mailbox. Like anything with PowerShell, this code can be improved..
The email quarantine process is as old as email itself, and still an essential part of any email service. As far as Office 365 is concerned, Exchange Online is a world-class product and the quarantine mechanism works well, however, the current iteration of the Quarantine portal falls short in user experience and performance.
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The Outlook Places service uses metadata stored for conference rooms and room lists to help users find suitable meeting places. The metadata surfaces in Outlook's Room Finder component (shared between OWA and Outlook desktop). Obviously, the better populated the room metadata is, the more useful it will be, once we all start meeting in conference rooms again!
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Many PowerShell scripts use the Send-MailMessage cmdlet to send mail. That's fine, but if you want to remove basic authentication to improve tenant security, you need to stop using Send-MailMessage. One solution is to move to use the Graph API SendMail call. This works fine, but it creates some new security issues that need to be thought through. In this article, we explain how to use the Graph to send email and some of those security considerations to ponder.
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It's important to know if a tenant has any very large distribution lists as these might be the source of reply-all mail storms. An old article explains how to report the membership counts for distribution lists on an on-premises Exchange server. Life is different in the cloud, and we need to take a different approach. This article explains how to use different calls in a PowerShell script to create a nice report about distribution list memberships.
