Microsoft is giving such organizations a one-year grace period. Microsoft wants Exchange Online users to switch to Continuous Access Evaluation instead of using Client Access Rules.

Microsoft this week announced a couple of changes coming to organizations that use its Exchange Online e-mail service.

A popular email messaging system from Microsoft that runs on Windows servers. The server side is Microsoft Exchange Server and the featured client program is Microsoft Outlook, which includes ...

Microsoft also is advising customers who rely on the on-premises version of Exchange to move to the 2019 version as soon as possible. Microsoft will support Exchange Server until October 14, 2025.

Exchange Server 2003 User CAL This client access license allows an individual to access Exchange 2003 from multiple devices (e.g., desktop, laptop, home PC, kiosk or mobile device).

Microsoft Corp. confirmed late Thursday that two unpatched Exchange Server vulnerabilities exist and that they’re currently being exploited in the wild by unknown attackers.