Exchange Server

Cloud Computing

Microsoft Warns About New Zero-Day Exchange Server Privilege Escalation Vulnerability

Microsoft has released an advisory regarding a critical vulnerability in Exchange Server. The company disclosed this zero-day flaw in the February 2024 Patch Tuesday updates and cautioned that it is currently being actively exploited in the wild. The security vulnerability, tracked as CVE-2024-21410, could allow hackers to relay NT LAN Manager (NTLM) hashes and impersonate...

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Datacenter networking servers

Microsoft Delays Final Exchange Server 2019 Cumulative Updates Until 2024

Microsoft has unveiled plans to postpone the rollout of new cumulative updates (CUs) for Exchange Server 2019, extending the release timeline to accommodate the upcoming Christmas holidays. The last two cumulative updates are expected to be rolled out to commercial customers after January 9, 2024. Last year, Microsoft announced that Exchange Server cumulative updates are…

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Cloud Computing

Microsoft to Enable Extended Protection By Default on Exchange Server

Microsoft has announced its plans to enable Extended Protection by default on Exchange Server later this year. Scheduled to roll out with the 2023 H2 Cumulative Update, the new security feature will help organizations to boost protection against credential theft and man-in-the-middle attacks. Windows Extended Protection is a security feature that is designed to secure…

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Cloud Computing

Microsoft Releases New Exchange Server Security Updates to Fix Localization Issues

Microsoft has released a new version of the August 2023 security updates for Exchange Server. The company pulled the updates from its Windows Update servers and enterprise update channels following reports about issues with the non-English installations of Exchange Server. Microsoft released the Patch Tuesday updates for on-premises Exchange Server 2016 and 2019 on August…

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Managing Exchange Online Mailbox Size Limits with PowerShell

Last Update: Aug 07, 2023

Learn how to manage Exchange Online mailbox size limits using Windows PowerShell in this short how-to article by J. Peter Bruzzese.

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Getting Mailbox Sizes in PowerShell

Last Update: Aug 07, 2023

Learn how to get Microsoft Exchange mailbox sizes in PowerShell in this step-by-step tutorial by the Petri IT Knowledgebase.

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What Is Exchange Online Archiving?

Last Update: Jul 24, 2023

Learn all about Exchange Online Archiving, a set of optional features that can be purchased separately from Exchange Online, which is also included in some Office 365 plans.

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An Introduction to Exchange Online Protection (EOP)

Last Update: Jun 12, 2023

J. Peter Bruzzese provides an introduction to Exchange Online Protection, Microsoft’s latest solution for protecting your Exchange server from malware and spam.

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Cloud Computing

Microsoft to Throttle Email Connections From Outdated Exchange Servers

Microsoft has detailed its plans to protect organizations against persistently vulnerable Exchange Servers. Starting on May 10, the company is introducing a new transport-based enforcement system that will block email traffic from unpatched or out-of-support Exchange Server instances. Microsoft explained that it will implement the new transport-based enforcement system in eight stages. The service will…

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Datacenter networking servers

Microsoft Brings Modern Authentication Support to Exchange Server 2019

Microsoft has announced the release of its new cumulative update (CU13) for Exchange Server 2019. The latest update brings modern authentication support to Outlook for Windows in Exchange Server 2019 and addresses around 200 bugs. Specifically, the 2023 H1 cumulative update adds support for modern authentication to on-premises Exchange Server 2019 environments. The security feature…

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