Exchange Online

Microsoft is getting ready to end support for Client Access Rules (CARs) in Exchange Online. The Exchange team has warned customers that support for this feature will be removed from the service in September 2023. Client Access Rules allow IT admins to control access to their Exchange servers based on client properties or client access…

Microsoft has unveiled a recent cybersecurity attack that allowed the threat actors to compromise Exchange Online. The attacker abused unsecured administrator accounts to gain access to the cloud tenants and created malicious OAuth applications to reconfigure the victim’s email server to send phishing emails. OAuth is an open-standard authorization protocol that enables users to share…

Microsoft is once again notifying customers that it will finally disable basic authentication support in Exchange Online starting October 1, 2022. The company is also giving organizations an option to pause the deprecation of select email connection protocols until the end of this year. In 2019, Microsoft first announced its plans to retire basic authentication…

Google has announced an important configuration change for Google Workspace customers. The company recommends that organizations should enable OAuth 2.0 to continue using Google Calendar Interop with Exchange Online after Microsoft disables Basic Authentication in October. Google Calendar Interop is a useful tool that allows Exchange Online and Google Calendar to work together. The feature…

In this guide, we’ll explain the technology behind plus addressing and how to enable and use plus email addresses with Exchange Online. The background of plus addressing The idea of plus addressing has existed for many years. The idea is simple enough. An email address is divided into a local part (resolved within an organization)…

Microsoft introduced the Safe Attachments feature as part of its Advanced Threat Protection (ATP) offering in 2015. ATP is an option for Exchange Online Protection (EOP). It is included in the Office 365 E5 plan and can be licensed as an add-on for $2/user per month for other Office 365 plans. Now Safe Attachments can handle dynamic delivery and the improvement is noticeable.

If you’re having issues with Microsoft 365 services right now, you’re not alone. The Redmond giant has acknowledged that its multiple Microsoft 365 offerings have been hit by another outage this morning, preventing users from accessing their Exchange Online mailboxes. Microsoft confirmed on Twitter that it is actively investigating the problem, and some users should…

Microsoft has teamed up with Apple to improve the security of Exchange Online accounts on iOS and macOS devices. In upcoming iOS and macOS updates, users who connected a Microsoft Exchange mailbox in Apple’s Mail app with Basic authentication will be automatically migrated to the more secure OAuth 2.0-based Modern authentication. Apple introduced support for…

Microsoft is getting ready to drop support for Basic Authentication in its Exchange Online e-mail service. The company is reminding customers that it will begin to permanently disable this feature for select protocols in its multi-tenant service worldwide starting October 1, 2022. Essentially, Basic Authentication means that an application provides a user name and password…

At Microsoft Ignite 2019, the Exchange product group announced the public preview of a set of REST-based PowerShell cmdlets to replace some of the most popular (and in performance terms, most painful) traditional cmdlets. The new cmdlets are more reliable and robust and run 2-4 times faster than the older Remote PowerShell-based cmdlets (your mileage will vary). All good stuff.