Figure 7.62 The New Transport Rule Wizardan attachment equal to or higher than 50 MB to the Quarantine mailbox.. You also have the option of having the rule enabled when it’s created by
Trang 1Figure 7.62 The New Transport Rule Wizard
an attachment equal to or higher than 50 MB to the Quarantine mailbox Once you have
entered the name and comment (optional), click Next.
4 You also have the option of having the rule enabled when it’s created by checking
Enable Rule (see Figure 7.62)
Trang 25 Next, select the condition(s) for the new rule For the purpose of this example, you want
to apply the rule to messages with an attachment equal to or larger than 50 MB, so you’ll
check When the size of any attachment is greater than or equal to limit, set the
value to 50000KB, and click Next (see Figure 7.63).
Figure 7.63 Transport Rule Conditions
Trang 3Figure 7.64 Transport Rule Actions
6 On the Actions page you can select the action(s) that should be taken for the messages
matching the confi gured conditions In this example, you check Put message in
quarantine and click Next (see Figure 7.64).
Trang 4Figure 7.65 Transport Rule Exceptions
7 On the next page you have the option of specifying one or more exceptions In this
example, you won’t specify any exceptions, so just click Next (see Figure 7.65).
Trang 5Figure 7.66 The Transport Rule Listed in Exchange Management Console
The Address Rewrite Agent
The edge transport server also has an agent, called the address rewrite agent, which can be confi gured
to enable modifi cation of the SMTP addresses on both inbound as well as outbound e-mail
messages You might want to do this if, for example, your organization consists of multiple domains (perhaps after a merger or acquisition) and should be presented with a consistent appearance of e-mail addresses to external recipients on the Internet The address rewrite agent can also be used
if the organization uses third-party vendors to, for example, provide e-mail support and/or other services In this situation the organization’s customers would expect messages to come from your
8 On the Confi guration Summary page, click New to create the new rule.
9 Finally, click Finish to exit the New Transport Rule Wizard
The newly created rule will now be listed in the Work pane, as shown in Figure 7.66, and you can at any time disable it or update it as required If you have multiple rules, you can also change the priority among them