Exchange 2007 routing
转载Exchange 2007 routingtoeyo1人评论134人阅读2013-02-22 10:01:44•ActiveDirectory sites These represent routing boundaries for Hub Transport servers. AHub Transport server delivers email messages directly to Mailbox servers,distribution group expansion servers, and source servers for connectors in itslocal Active Directory site. It can also route messages to Edge Transportservers that are subscribed to that site. However, when routing email messagesto remote Active Directory sites, a Hub Transport server must> •Routingtables These hold the information that the routing component uses to makerouting decisions. The routing table is composed of a map of topologycomponents and their>
Theprocess of determining the site membership of a computer in a domain uses aseries of DNS queries to compare the local IP address to defined subnets andthus determine the appropriate site membership association.
All types of data can be replicated across an IP site link, andExchange Server 2010 uses IP site links to determine its routing topology. Therouting component of Exchange Server 2010 takes into account the cost assignedto an IP site link when calculating a routing table. IP site-link costs areused to calculate the least-cost routing path to the ultimate destination for amessage.
Every Active Directory site must be associated with at least oneIP site link and a single IP site link named DEFAULTIPSITELINK is implementedby default.
If an Exchange cost is assigned to an IP site link, it is used by Exchange Server2010. Otherwise, the Active Directory cost is used.
When the Microsoft Exchange Transport service starts, itcalculates a set of routing tables based on a snapshot of information retrievedfrom Active Directory (or on an Edge Transport server from AD LDS). Routingtables determine how messages are routed to recipients. When configurationchanges are made, the routing tables are rebuilt, and the new routing tablesare used to route incoming messages.
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