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 How to Configure Internet Mail Flow...
Exchange 2007
How to Configure Internet Mail Flow Directly Through a Hub Transport Server

Applies to: Exchange Server 2007, Exchange Server 2007 SP1 Topic Last Modified: 2007-08-08

This topic explains how to use the Exchange Management Console or the Exchange Management Shell to configure an Internet-facing Hub Transport server. To establish Internet mail flow directly through a Hub Transport server, you create a Send connector that routes e-mail to the Internet. Also, you modify the configuration of the default Receive connector to accept e-mail from the Internet. In this scenario, the Microsoft Exchange Server 2007 Hub Transport server can be reached directly through the Internet. We don't recommend this topology because it increases security risks by exposing to the Internet the Exchange 2007 server and all roles installed on that server. We recommend that you implement a perimeter network-based SMTP gateway, such as the Edge Transport server, instead.

Bb738138.note(en-us,EXCHG.80).gifNote:
You can install the anti-spam agents on the Hub Transport server role by using the Install-AntiSpamAgents.ps1 script. This script is located in the %system drive%/Program Files/Microsoft/Exchange Server/Scripts folder. After you run this script, all the anti-spam agents are installed and enabled, and the Anti-spam tab is available in the Exchange Management Console for Hub Transport servers. We recommend that you install the anti-spam agents if you select this topology so that the Hub Transport server can provide anti-spam protection for the Exchange organization. For more information, see How to Enable Anti-Spam Functionality on a Hub Transport Server.

To perform the following procedures, the account you use must be delegated the following:

  • Exchange Organization Administrator role

To perform the following procedure on a computer that has the Edge Transport server role installed, you must log on by using an account that is a member of the local Administrators group on that computer.

For more information about permissions, delegating roles, and the rights that are required to administer Exchange 2007, see Permission Considerations.

Before you start this procedure, verify that the following prerequisites are met:

  • Register MX resource records for all accepted domains in a public domain name system (DNS) server.
    Bb738138.note(en-us,EXCHG.80).gifNote:
    Consult the documentation of your DNS provider for information about how to register MX records for your domain. Detailed procedures about how to complete this step are outside the scope of this topic.
  • Configure network gateways to route SMTP traffic to and from the Hub Transport server.
    Bb738138.note(en-us,EXCHG.80).gifNote:
    Consult the documentation for your network routers and firewalls for information about how to route SMTP traffic to and from the Hub Transport server. Detailed procedures about how to complete this step are outside the scope of this topic.

To establish mail flow to and from the Internet through a Hub Transport server, follow these steps:

  1. Create a Send connector on the Hub Transport server to send e-mail to the Internet.
  2. Modify the default Receive connector to allow anonymous connections.

  1. Create a Send connector on the Hub Transport server to send e-mail to the Internet by performing the following steps:

    1. Open the Exchange Management Console. Expand Organization Configuration, click Hub Transport, and then in the action pane, click New Send connector.
    2. On the New SMTP Send connector wizard Introduction page, in the Name field, type a unique name for the connector. From the Select the intended use for this connector drop-down list, select Internet, and then click Next.
    3. On the Address Space page, click Add. In the Add Address Space dialog box, type "*", and then click Next.
    4. On the Network Settings page, select Use Domain Name System (DNS) to route mail automatically. Select the check box to Use External DNS Lookup settings. Click Next.
      Bb738138.note(en-us,EXCHG.80).gifNote:
      For more information about how to configure external DNS lookup settings, see Configuring Transport Server Properties.
    5. On the Source Server page, click Add. In the Select Hub Transport and subscribed Edge Transport servers dialog box, select one or more Hub Transport servers in your organization, click OK, and then click Next.
    6. On the New Connector page, click New, and then on the Completion page, click Finish.

  2. Modify the default Receive connector to allow anonymous connections by performing the following steps:

    1. Open the Exchange Management Console. Expand Server Configuration, click Hub Transport, and in the work pane under the Receive Connectors tab, select the Default Server Name connector. In the action pane, click Properties.
    2. In Connector Properties, select the Permissions tab.
    3. Select Anonymous Users to add anonymous permissions. Click OK.

For more information, see the following topics:

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