After the installation of the Microsoft
Exchange Server 2007 Edge Transport server role, you must configure the
appropriate Send and Receive Connectors. Until this has been
accomplished, the server will be unable to send SMTP messages to, or
receive them from, the Internet and your internal Hub Transport servers.
As
discussed in the previous section, to complete the configuration of the
Send Connector on an Edge Transport server, you subscribe the server to
the organization using EdgeSync, which then replicates the appropriate
connectors to the Edge Transport server. If you do not use EdgeSync,
you must manually create and configure the connector.
This
section covers additional information about Edge Transport server
connectors that was not touched on in the previous section.
An
Edge Transport server must have at least four required connectors to
function properly. The first two, both Send Connectors, are created and
configured for you automatically during the EdgeSync process:
A
Send Connector must exist that is configured to send messages to the
Internet. Typically, the address space for this connector is set to *
(all Internet domains). DNS routing is used to resolve destinations.
The usage type for this connection is set to “Internet.” This connector
is created automatically when you use EdgeSync to subscribe the server
to an Active Directory site. A Send
Connector must exist that is configured to send messages to the Hub
Transport servers in the Exchange organization. The address space for
this connector can either be *, or you can manually list each of the
domains for which you are processing mail. The smart hosts for the
connector should be configured as your Hub Transport servers, and the
usage type set to “Internal.” This connector is also created
automatically during the subscription process.
The next two required connectors are Receive Connectors:
A
Receive Connector must exist that is configured to accept messages from
the Internet. Usually, this connector is configured to accept
connections from any IP address range. Furthermore, it is normally
configured to allow anonymous access. When configuring the local
network bindings for this connection, they should be set to the
external-facing IP address of the Edge Transport server, and the usage
type should be set to “Internet.” A
second Receive Connector must exist that is configured to accept
messages from Hub Transport servers in your organization. For security
purposes, you can configure this connector to accept connections only
from your Hub Transport servers by listing their IP address ranges. The
local network bindings for this connector should be configured as the
internal-facing IP address of the Edge Transport server, and the usage
type should be set to “Internal.”
Configuring Receive Connectors on the Edge Transport Server
When
you install the Edge Transport server, one Receive Connector is
automatically created. This connector is configured by default to
accept SMTP traffic from all IP address ranges, and it is bound to all
IP addresses associated with the local server. The usage type is set to
“Internet,” and the connection will accept anonymous connections. It is
recommended that you modify the settings of this Receive Connector and
create a second one for internal usage. To perform this procedure,
follow these steps:
1. | Start the Exchange Management Console on the Edge Transport server.
| 2. | In the console tree, select Edge Transport.
| 3. | In
the results pane, select the appropriate Edge Transport server and
then, on the bottom half of the pane, click the Receive Connectors tab.
| 4. | Select the default connector and, in the action pane, click Properties.
| 5. | Click
the Network tab, and edit the existing Local IP Addresses (by default,
set to All Available). Configure this address to be the IP address of
the Internet-facing network adapter of the Edge Transport server. Save
your changes and exit, as no other changes are needed on this connector.
| 6. | Next,
in the action pane, click New Receive Connector. On the Introduction
page, enter a name for this connector, and select a usage type as
Internal. Click Next to continue.
| 7. | On
the Remote Network Settings page, modify the Remote IP Addresses and
configure them to accept mail from the IP addresses assigned to your
Hub Transport servers. Save the settings and click New to create the
connector.
| 8. | After
the connector has been created, you must make one more modification.
Select the connector in the results pane and select Properties in the
action pane. Click the Network tab, and double-click the Local IP
Address(es) entry, currently set to (All Available). Click the Specify
an IP Address option button, and enter the IP address of the
internal-facing network adapter of the Edge Transport server. Save all
settings and exit, as no other changes are needed on this connector.
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Configuring Send Connectors on the Edge Transport Server
As
discussed in the section on Hub Transport servers, the Send Connectors
needed on your Edge Transport server are automatically generated by the
EdgeSync service. If you elect to not create an Edge subscription, you
must manually configure the Send Connectors.
Manual Completion of Send Connectors
To manually complete the configuration of the first Send Connector, do the following:
1. | Start the Exchange Management Console on the Edge Transport server.
| 2. | In the console tree, select Edge Transport.
| 3. | In
the results pane, select the appropriate Edge Transport server and
then, on the bottom half of the pane, click the Send Connectors tab.
| 4. | In the action pane, click New Send Connector.
| 5. | On the Introduction page, type a name for the connector, and set the usage to Internet. Click Next to continue.
| 6. | On
the Address Space page, click Add. Set the Domain to * and ensure the
Include All Subdomains option is selected. Click Next to continue.
| 7. | On
the Network Settings page, select Use Domain Name System (DNS) “MX”
Records to Route Mail Automatically. Click Next to continue. Save all
settings and exit, as no further configuration is needed on this
connector.
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To manually complete the configuration of the second Send Connector, do the following:
1. | Start the Exchange Management Console on the Edge Transport server.
| 2. | In the console tree, select Edge Transport.
| 3. | In
the results pane, select the appropriate Edge Transport server and
then, on the bottom half of the pane, click the Send Connectors tab.
| 4. | In the action pane, click New Send Connector.
| 5. | On the Introduction page, type a name for the connector, and set the usage to Internal. Click Next to continue.
| 6. | On
the Address Space page, click Add. Set the domain to the domain(s) for
which you accept mail. If you have more than one accepted domain,
configure additional entries. Ensure the Include All Subdomains option
is selected. Click Next to continue.
| 7. | On the Network Settings page, select Route All Mail Through the Following Smart Hosts, and click Add.
| 8. | Enter
the IP address or FQDN of one of your Hub Transport servers as the
smart host. Click OK to continue. To add additional Hub Transport
servers, click Add again. When you are ready, click Next to continue.
| 9. | On the Smart Host Security Settings page, ensure the None option button is selected, and click Next.
| 10. | Review all entries and, after all entries are correct, click New to create the connector. |
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