Exchange Server – Setup Outbound Filtering
This document outline the procedure for setting up your Exchange server to direct all outbound
email (that is, email originating from within your organisation) to MailShield for filtering.
This will ensure that even if you have anti-virus on your computers that if one pc does get infected
that it can not send out via e-mail to it’s intended recipients. This is the most common method of
All steps below are performed in the Microsoft Exchange System Manager application.
1. Start the Microsoft Exchange System Manager application and browse to the Servers
item in the left-hand pane.
2. Select the mail server you are using and then browse to the SMTP item that can be
found under Protocols.
3. Select the Default SMTP Virtual Server item that appears in the right hand pane
(see below picture).
4. Right click the Default SMTP Virtual Server and select Properties
5. Select the Delivery tab and then click on the Advanced button.
6. In the new window that appears (see below picture) enter the name of the MailShield filter
server under Smart Host.
The MailShield outbound filtering server is : filter-smtp.mailshield.com.au
Ensure that neither the Attempt direct delivery before sending to smart host nor the
Perform reverse DNS lookup on incoming messages boxes are checked.
If your Internet connection does not have a fixed IP address, it is imperative you configure SMTP
Authentication to instruct MailShield’s servers to accept messages from your Exchange Server.
How to set up SMTP authentication is explained below.
If you do have a fixed IP address, setting up SMTP authentication is not necessary. Let us know
your IP address so we can add you to the trusted network list. Please contact us using the
methods in the support section below to get this feature setup.
Once you've setup your Exchange server to send all outbound emails through MailShield you must
configure your Exchange server to a