Datasheet

Designing Organization Configuration to Meet Routing Requirements
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layers of protection, including attachment, connection, content, recipient, and sender filter-
ing, as well as a sender ID agent.
Messaging Policy and Compliance
To satisfy any legal, regulatory, or internal requirements to filter, process, or store messages
going inside and outside the organization, the Edge Transport role is equipped with the
following agents:
Address Rewrite agent: This agent lets you modify SMTP addresses on messages that go inside
or outside of the Exchange organization. This is especially useful in scenarios where the internal
email address should not be disclosed or should be standardized after a company merger.
Edge Rules agent: Using rules, you are able to control the flow of messages that are sent or
received from the Internet. The rules are based on specific words or text patterns in the mes-
sage subject, body, header, or From field, the spam confidence level (SCL), or attachment type.
Actions include quarantining a message, dropping or rejecting messages, appending additional
recipients, or logging an event.
Planning for the Edge Transport Server
To plan the implementation of the Edge Transport server, consider the following issues:
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Edge Transport servers are stand-alone servers. Never plan to integrate them into your
Active Directory, as they still will use ADAM and not utilize AD.
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An Edge Transport server can be subscribed to an Active Directory site. This will inte-
grate the Edge Transport into the Exchange organization, starting synchronization of
all Exchange organizational configurations (e.g., accepted domains). If you do not
integrate the Edge server into your Exchange organization it will act as a stand-alone
server and you also will not be able to use the antispam features, recipient lookup, or
safe list aggregation features.
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Plan where you want to place Edge Transport servers in your perimeter network. For
load-balancing consider installing multiple machines for every Internet connection.
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You can coexist with available smart host servers, but to receive the full benefit you
should concentrate on a single implementation only.
Designing Organization Configuration
to Meet Routing Requirements
This section will show you how Exchange Server 2007 routing works and what design-related
aspects you should include in your Exchange Server 2007 implementation plan. After a dis-
cussion of internal message routing, we will look at external message routing.
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