After seemingly ignoring the situation for years, Microsoft delivered modern authentication for Exchange Server (for pure on-premises organizations) in Exchange 2019 CU13. The solution uses ADFS to issue and manage the OAuth 2.0 tokens and is supported by the latest version of Outlook for Windows. Support for other clients is in the works.
Unfortunately, Exchange mailbox databases don’t shrink, and the last thing you want is your server running out of disk space. In this blog, we explore how to monitor your Exchange mailbox database size and available new mailbox space through PowerShell.
My team has recently worked on some projects featuring multi-tenant and multi-Exchange environments. A common requirement for all projects is the ability to share free/busy information across all environments. In this article, I will dive into using free/busy sharing with Exchange/Microsoft 365 in the worldwide cloud. Sharing Free/Busy Information Let’s start with the obvious issues: […]
In early December 2022, Rackspace had a major breach in their exchange environment that led to customers' mail data being stolen. This article explains what happened and what can be learned from this incident.
In this week's Practical 365 Podcast, Steve and Paul Discuss new security updates for Exchange Server, what you should do if you are still on Exchange Server 2013, Azure AD Cross Tenant Sync arrives in the roadmap for imminent release, and much more!
Welcome to the first installment of Practical Protection with Paul Robichaux. Paul illustrates four general security principles and talks about how you can practically apply them to your Exchange environment.
This article explains the importance of deploying Autodiscover correctly to ensure that all of Microsoft 365 works, including Exchange Online.
Microsoft recently released Exchange Server Support for Windows Extended Protection. Learn how it works and how to enable it!
If you've migrated to Exchange Online, make sure you stop publishing your Exchange Servers to the internet. After a standard Hybrid migration, you still might be reliant on Exchange Server and in this article you can find out why and how to move remaining web services to Microsoft 365.
It's often helpful when security researchers like Guardicore shed light on flaws in Microsoft Exchange - however, the Autodiscover protocol isn't flawed in the way they describe. Even though the issue is hard to replicate, it shouldn't distract from the work you need to do to protect your organization from the underlying reason why people want your credentials.
It has been a tiring year for Exchange on-premises and hybrid administrators and unfortunately, it's not getting any easier. The HAFNIUM exploits cast a negative light on Microsoft Exchange, re-emphasizing why email is a crucial part of any organization and that nothing and no one is exempt from an attack. Find out why and what you can do to protect your organization NOW.
Microsoft's Exchange Server woes continued when the online copy of the Hybrid Configuration Wizard was hijacked and replaced by a text file. The problem is now fixed, but it underlines the need for vigilance in all parts of the Microsoft 365 ecosystem.
