Microsoft 381-04124 Exchange Standard CAL 2010 Device

The Microsoft Exchange Standard CAL 2010 (Device) is a client access license that grants a single physical device the legal right to connect to and use Microsoft Exchange Server 2010. Under Microsoft's server/CAL licensing model, the server software license and the client access license are sold separately — this CAL is the per-device entitlement that satisfies the access right for one machine. The Standard tier covers the core Exchange feature set: MAPI/Outlook connectivity, Outlook Web Access, ActiveSync for mobile, shared calendars, contacts, and tasks, plus IT-level policy controls including mailbox policies and message retention. It does not cover Exchange Enterprise CAL features such as Unified Messaging, in-place archiving, or per-user journaling.

This license is relevant only to organizations maintaining an Exchange Server 2010 on-premises deployment — a platform that reached end of extended support in October 2020 and no longer receives security patches from Microsoft. In practical terms, this means the CAL is a compliance artifact for existing 2010 deployments rather than a foundation for new infrastructure. IT environments that have deferred migration may need to maintain CAL compliance for audit purposes while planning a transition to Exchange Server 2019 or Microsoft 365. New deployments should not be built on Exchange 2010 under any circumstances — the security posture of an unpatched messaging server is untenable in current threat environments.