Question : Configure Exchange to get the email from a McAfee device.

I am running SBS 2003 R2, I have installed a McAfee SCM 3100 device.  Currently I have the email being delivered to the McAfee device from the internet (I can see new email being blocked due to the rules).  How do I configure the Exchange Server within SBS to look at the McAfee device for the good emails that should come through and how do I point the Exchange Sever to send email through the McAfee device.

Answer : Configure Exchange to get the email from a McAfee device.

Looking over the manual you would need to go to Delivery Settings in your Navigation Pane.  In the Hosts Section you would put either the IP of your Server of the FQDN (LAN) of your SBS Server.  See the directions below.

Delivery settings
In the navigation pane, select Configure | SMTP | Protocol Settings | Delivery Settings to specify
the methods for delivering scanned SMTP email messages.
You can configure:
À„ Policy Based Relays  To relay messages that require encryption (for example,
because of confidential content).
À„ Hosts  You can specify a Fully Qualified Domain Name (FQDN), an IP address
or an IP address and port number, separated by a colon (:).
À„ Domain Relays  To relay email messages destined for specific domains to particular
mail servers. Add the following information for each domain relay:
À„ Domains  To create a single relay that routes messages from all domains, use
the * wildcard symbol. If you position the wildcard entry beneath other entries in
the list, the other entries are tried first, then the wildcard entry routes messages
for all other relays.
À„ Hosts  Specify network addresses and domains here. If you type more than one
network address and/or domain, separate them by a space. The appliance tries
these addresses in the order you type them.
À„ DNS  If no Domain Relays are specified, allow the appliance to look up mail
recipients IP addresses using DNS. If the appliance cannot resolve an email address
to an IP address, the appliance tries to deliver the message to the entries in its list
of fallback relays. If the message still cannot be delivered, it is rejected.
À„ Fallback Relays  To route email messages that cannot be delivered using DNS
resolution. This list contains relays for local hosts, such as mail servers and enables
the appliance to try local domains, to route undeliverable messages into the
organization. You can add as many relays as you want. Fallback relays are typically
Internet Service Providers (ISPs). Because the appliance tries them in order, list the
most common first. Add the following information (as described under Domain
Relays) for each fallback relay:
À„ Domains.
À„ Hosts.