Exchange Online

Microsoft has recently sent ripples through the developer community with its announcement of the retirement of the Exchange Web Services API. The company will begin blocking EWS requests from non-Microsoft applications to Exchange Online starting in October 2026. Exchange Web Services (EWS) is a cross-platform managed API that allows developers to build custom applications that…

Microsoft recently disclosed a cyber-espionage campaign that allowed Chinese hackers to steal a signing key and breach sensitive US government email accounts. The company launched an investigation into the security incident, which led to the publication of detailed findings in a report released on Wednesday. In July, Microsoft detailed that a Chinese hacking group (tracked…

The first article in this series discussed how to remove the ability of OWA users to create autoforwarding addresses. This does a lot to stop the forwarding of email outside an organization, but OWA is only one part of the problem. We also need to deal with the other ways that messages can be automatically…

The PowerShell Get-MessageTrace command can help Office 365 admins track down the delivery and processing of email messages that may not be getting into their users’ mailboxes. In this article, I’ll show you how to use the Get-MessageTrace command to manage and analyze email message traces in Office 365. Using PowerShell Get-MessageTrace with Exchange Online…

The Cyber Security Review Board (CSRB) has recently announced that it will investigate the recent compromise of Exchange Online used by the US government. The board also plans to conduct a review of the identity and authentication infrastructure used by cloud providers. Last month, Microsoft confirmed that China state-backed hackers (dubbed ‘Storm-0558’) breached the email…

Microsoft Exchange Online Archiving allows you to alleviate issues your users run into when their mailboxes approach their allocated quota. As an IT admin, Exchange Online Archiving is a really powerful tool that should not be overlooked. In this article, I’ll examine why archiving is necessary and how to enable Exchange Online Archiving to help…

Microsoft is increasing the default mailbox quota for the Office 365 E3 and E5 plans to 100 GB. That’s quite a lot of space to fill, but Microsoft has good reasons for upping the limit.

Microsoft has recently disclosed a security breach that allowed Chinese hackers to access the email accounts of around two dozen organizations. Now, security researchers have found that the stolen security key provided access to far beyond Outlook and Exchange Online email accounts. According to Microsoft, the Chinese hacking group (dubbed Storm-0558) used forged authentication tokens…

As an IT Pro, it is crucial to your organization to make sure that your users receive legitimate emails. Sometimes, Exchange Online Protection (EOP) can flag these emails as spam. Safely creating whitelists for specific domains/email addresses allows you to efficiently manage email flow in your organization and protect your users from malicious activity. In…

Microsoft’s Office 365 Quarantine is a new service designed to keep organizations safer by moving all suspicious messages to a secure location. In this guide, we’ll explain how Office 365 Quarantine works and how IT admins can use it to protect users in an organization from malicious files and messages. What is Office 365 Quarantine?…