You are the messaging engineer for your company. The company has a main office and two branch offices. The network contains two Exchange servers named Server1 and Server2. Server1 is a Microsoft Exchange Server 2003 server. Server1 hosts the SMTP connector that delivers outbound Internet e-mail. Server2 is an Exchange Server 2007 server. Server2 hosts the Mailbox server role, the Client Access server role, and the Hub Transport server role. You plan to configure your companys firewall to allow outbound SMTP connections only from Server2. You need to recommend a solution that ensures that Server2 delivers all outbound Internet e-mail. What should you recommend?
A.
Configure the SMTP connector on Server1 to use Server2 as a smart host. Delete the Receive connector on
Server2.
B.
Create a Send connector that uses Server2 as a source server. From Server 1, delete the SMTP connector.
C.
Configure the SMTP virtual server on Server1 to use Server2 as a smart host. From Server 1, delete the
SMTP connector.
D.
Create a Receive connector on Server2 and specify the Remote IP range to the local subnet. Create a Send
connector that uses Server1 as a smart host.
Explanation:
To transmit mail, Exchange 2003 uses SMTP connectors logically bound to virtual SMTP servers. Exchange 2007 uses the Hub role. On every Hub server, Setup creates one special connector, called the intra-organization Send connector. This is invisible, requires no management, and is used to relay mail to the following destinations:1. Exchange 2003 servers in the organization.
2. Other Hub servers in the forest.
3. Edge servers in the perimeter network.
Setup also creates two implicit receive connectors on the Hub server: one to get mail from any sender on Port 25; the other, from non-MAPI clients on Port 587.
http://www.msexchange.org/tutorials/Implementing-Exchange-Server-2007-coexistence-Exchange-Server-2003.html
http://technet.microsoft.com/en-us/library/bb125223.aspx
EMC > Organization Configuration > Hub Transport > New Send Connector…
In order to transmit email to the Internet, you must configure a Send connector of type Internet. Set the address space to * (type SMTP). This connector should point to the Edge server if one exists.
If you’ve installed Exchange 2007 into an existing 2003 organization, you probably already have an SMTP Connector and just need to verify the settings. If the connector is on a 2003 server, all changes must be made thru the 2003 ESM (look for "SMTP Connectors"). If this is the sole connector on the 2003 machine, all outbound mail will pass thru that server. If connectors exist on both 2003 and 2007 machines, mail will pass thru the closest server. If you delete the 2003 connector and leave the 2007 one, then all Internet mail will exit the organization thru the 2007 server.
http://msexchangeteam.com/archive/2006/11/17/431555.aspx