Translation of "Hub-Transport-Serverrolle" into English

An Exchange Server 2007 server role that provides routing within a single organizational network by using the Active Directory directory service site. Deployed inside the Active Directory forest, computers that have the Hub Transport server role installed handle all mail flow inside the organization, apply transport rules, apply journal rules, and deliver messages to recipients' mailboxes. Messages that are sent to the Internet are relayed by the Hub Transport server to the Edge Transport server role that is deployed in the perimeter network. Messages that are received from the Internet are processed by the Edge Transport server before they are relayed to the Hub Transport server. The Hub Transport server role stores all its configuration information in Active Directory. This information includes transport rules settings, journal rule settings, and connector configurations.