There
are five main types of delivery methods. Visually, an administrator can see this in the queue viewer, as
shown in Figure 11 - 1 .
Chapter 11: Exchange Server 2007 Routing
303
These destination types are defined as:
SmartHost Delivery: This type of delivery is used when the recipients have external addresses.
It routes to a server with a Send Connector that matches the recipient ??™ s domain address space.
The message is delivered to the destination SmartHost.
DNS Delivery: This type of delivery is used when the recipients have external addresses. The
message routes to a server with a Send Connector that matches the recipient ??™ s domain address
space. The message is delivered to the destination with a connector that uses DNS delivery.
Non - SMTP Gateway Delivery: This delivery is used when the recipient ??™ s domain address space
matches the address space of a Foreign Connector. The message is routed to the server that has
the Foreign Connector on it.
SMTP relay: This delivery is used when the delivery is to an Exchange user or system object
and they are not in the local Active Directory site. The route is takes depends on the destination
server. The possible types are:
??‘ SMTPRelayWithAdSite: Messages are routed for delivery to a Hub Transport in the local
Active Directory site.
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