LS, We have Exchange 2010 SP1. In the DMZ we have 2 EDGE servers installed. In the intra-net we have 2 HUB servers. With the command New-EdgeSubscription I can 'connect' the edge to the HUB. Do I have to execute this command on both edge servers ? Regards Peter

To create an Edge subscription, perform the following general steps: 1. Ensure that the Hub Transport and Edge Transport servers are able to resolve each other’s DNS names. 2. On the Edge Transport server, use the EMS to run the New-EdgeSubscription cmdlet. 3. Transfer the file generated by running the New-EdgeSubscription cmdlet to a Hub Transport server. 4. On the Hub Transport server, open the EMC and navigate to the Organization Configuration\Hub Transport node. Click on the Edge Subscriptions tab and then click New Edge Subscription in the Actions pane. This will open the New Edge Subscription Wizard. 5. On the New Edge Subscription Wizard, specify the location of the Edge Subscription file that you copied to the Hub Transport server. Select the Active Directory site to which the Edge Transport server will subscribe. Select the Automatically Create A Send Connect For This Edge Subscription if you want to route messages through the Edge Transport server to the Internet. 6. Click New to create the subscription and then click Finish to dismiss the wizard. Configuring the firewall between the dmz subnet and the internal network, you will need to open port 25 between the Hub Transport and Edge Transport servers to allow for the transmission of messages. To allow the EdgeSync process to function, you need to open TCP port 50636 between the Edge Transport server and the Hub Transport servers on the site connected to the perimeter network. This port must be open before you attempt to configure the Edge subscription.Adam Bokiniec

Hello Adam, thanks for the info. I was aware of these steps. I do have one question. Should I do this excersise on both Edge servers ? (so running the new-edgesubscription on both edge servers ? ) Regards Peter

Hi Peter, Yes you can do this on both servers.Adam Bokiniec

Hi Peter, "You can subscribe one or more Edge Transport servers to a single Active Directory site." Details, please see: Adding an Edge Transport Server section Understanding Edge Subscriptions http://technet.microsoft.com/en-us/library/aa997438.aspx Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.