Applies to: Exchange Server 2010 SP1
Topic Last Modified: 2012-07-23
Estimated time to complete: 5 minutes
Before the Exchange 2010 hybrid server can send or receive messages to or from the cloud-based organization, you need to create a Send connector for the service-routing namespace and configure the existing default Receive connector to accept anonymous connections from the Internet.
Learn more at: Understanding Send Connectors, Understanding Receive Connectors
 Caution: |
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| This topic is meant to be read as part of the Microsoft Exchange Server 2007 and Office 365 Hybrid Deployment checklist. Information or procedures in this topic may depend on prerequisites configured in topics earlier in the checklist. To view the checklist, see Checklist - Exchange 2007 and Office 365 Hybrid Deployment |
How do I create a Send connector?
You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "Send connectors" entry in Transport Permissions.
Do the following on the hybrid server to create a Send connector.
- In the console tree, click Organization Configuration in
the on-premises forest, and then click Hub Transport.
- In the action pane, click New Send Connector.
- On the Introduction page, in the Name field,
enter the name of the new send connector that will be used to send
messages to the cloud-based organization. For example, “To Cloud
Service Connector”.
- In the Select the intended use for this Send connector
drop-down box, select Internet, and then click
Next.
- On the Address space page, click Add.
- In the SMTP Address Space dialog, enter the
service-routing namespace in the Address space field, and
then click OK. For example, service.contoso.com. Click
Next.
- On the Network settings page, select Use domain name
system (DNS) "MX" records to route mail automatically and click
Next.
- On the Source Server page, verify the Exchange 2010
hybrid server is included in the server list. If not, click
Add, select the Exchange 2010 hybrid server, and then click
OK. Click Next.
- On the New Connector page, verify your settings and then
click New.
- In the details pane, right-click the new Send connector and
then click Properties.
- In the Properties dialog, enter the external fully qualified
domain name (FQDN) of the Exchange 2010 hybrid server in the
Specify the FQDN this connector will provide in response to HELO
or EHLO field. For example, mail2.contoso.com. Click
OK.
How do I configure the default Receive connector?
You need to be assigned permissions before you can perform this procedure. To see what permissions you need, see the "Receive connectors" entry in Transport Permissions.
Do the following on the hybrid server to configure the default Receive connector to accept connections from the Internet.
 Important: |
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| Be sure to configure a new external IP address on your firewall to accept inbound connections on TCP port 25. Then direct connections on that IP address to the internal IP address of your hybrid server. For more information, see your firewall's documentation. |
- In the console tree, click Server Configuration in the
on-premises forest, and then click Hub Transport.
- Select the Exchange 2010 hybrid server in the details pane,
right-click Default EX2010, and then click
Properties.
- In the Receive connector properties window, click the
Permission Groups tab.
- Select Anonymous Users, and then click OK.
How do I know this worked?
If you've successfully created a new Send connector, the Send connector will appear in the details pane under Organization Configuration > Hub Transport.
If you've successfully configured the default Receive connector, the Receive connector will accept connections from anonymous connections from the Internet.
Having problems? Ask for help in the Office 365 forums. To access the forums, you'll need to sign in using an account that's granted administrator access to your cloud-based service. Visit the forums at: Office 365 Forums