Updated: July 10, 2020 (April 19, 2010)

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Exchange Hosted Services

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526 wordsTime to read: 3 min
Rob Horwitz by
Rob Horwitz

Rob Horwitz analyzes and writes about Microsoft licensing programs and product licensing rules. He also trains organizations on best Microsoft... more

Exchange Hosted Services (EHS) is a set of four Microsoft-hosted services originally designed to augment on-premises installations of Exchange Server (and, in some cases, other e-mail servers). Some of the services can also be used to add other capabilities to Exchange Online. (Formerly known as FrontBridge, EHS should not be confused with Exchange Online or hosted Exchange servers from third-party providers.)

All four EHS outsource an aspect of an Exchange-based system that customers can perform on-premises if they are willing to accept the potentially arduous task of installing and maintaining complex Exchange architectures and additional software from Microsoft or third-parties. Furthermore, several of the services are more valuable than on-premises solutions precisely because they are off-site; for example, Forefront Online Protection for Exchange intercepts spam—which makes up 90% or more of e-mail traffic—before it reaches a corporate site and consumes WAN and LAN bandwidth.

EHS consists of the following services:

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