Datasheet

24 CHAPTER 1 INTRODUCING EXCHANGE SERVER 2010
More information on the archive and retention policy features can be found in Chapter 22,
‘‘Getting Started with Email Archiving.’’
Message Transport Rules
Message transport rules are quite similar t o Outlook rules and are even created using a wizard
similar to one used to create Outlook rules. However, these rules are quite a bit more pow-
erful and are executed on the Hub Transport servers. Since all messages are processed by a
Hub Transport server whether they are inbound, outbound, or for local delivery, you can build
powerful policies to control the messages and data that flows within your organization. Trans-
port rules can also be defined at your organization’s perimeter by using an Edge Transport
server.
Although we will cover a lot more about transport rules in Chapter 26, ‘‘Managing Trans-
port and Journaling Rules,’’ just to give you a taste of what you can do with transport rules, it
is useful to highlight some of the cool things you can do with them:
◆ Append disclaimers to outgoing messages
◆ Implement message journaling based on recipients, distribution lists, message classifica-
tion, or message importance
◆ Prevent users or departments from sending email to another by creating an ethical wall
(a.k.a. a Chinese wall)
◆ Intercept messages based on content or text patterns using regular expressions (REGEX)
found in the message subject or m essage body
◆ Apply message classifications to messages based on sender or message content
◆ Take action on a message with a certain attachment or attachment type or an attachment
size that exceeds a specified limit
◆ Examine a nd set message headers or remove data from the message header
◆ Redirect, drop, or bounce messages based on certain criteria
◆ Apply Microsoft Rights Management Service (RMS) encryption-based transport rule
conditions
Every transport rule has three components: conditions, actions, and exceptions. The con-
ditions specify under what conditions the rule applies whereas the exceptions specify under
what conditions it will not apply. The actions are the interesting part of the transport rule.
Figure 1.11 shows the Conditions page of the Transport Rule wizard; this screen has two parts.
The first part is simply checking the actions to take, and the second part specifies more details
about the action.
For the transport rule you see in Figure 1.11, previously on the Conditions page, we
selected a condition From People in Step 1, but in Step 2, we have to specify the list of people
(orgroups).Inthiscase,weselectedthegroupVIPs.OntheActionspage(showninFigure
1.11), we selected the Log An Event With Message, Apply Message Classification, and Blink
Carbon Copy (BCC) The Message To Addresses options.
In the Step 2 box, we then have to specify the text of the event to log, the classification to
apply, and to whom the BCC message should be sent.