Problem

Check your edge connection with the following:

Start-EdgeSynchronization

The output should be like this :

[PS] C:\Windows\system32>Start-EdgeSynchronization

RunspaceId     : 780c62ad-b38a-4a2b-9c71-f79a0ab03bcc
Result         : Success
Type           : Recipients
Name           : [Name_Of_Edge_Server]
FailureDetails :
StartUTC       : 25/05/2012 10:55:53
EndUTC         : 25/05/2012 10:55:53
Added          : 0
Deleted        : 0
Updated        : 0
Scanned        : 0
TargetScanned  : 0

RunspaceId     : 780c62ad-b38a-4a2b-9c71-f79a0ab03bcc
Result         : Success
Type           : Configuration
Name           : [Name_Of_Edge_Server]
FailureDetails :
StartUTC       : 25/05/2012 10:55:53
EndUTC         : 25/05/2012 10:55:53
Added          : 0
Deleted        : 0
Updated        : 0
Scanned        : 0
TargetScanned  : 0

If your got Not Connect result, follow these intructions :

Solution :

1. Log on to Edge Server.
2. Open Exchange Management Shell, and type: New-EdgeSubscription -FileName "C:\edgesubscription.xml" Enter.
3. type A enter
4. Copy subscription.xml, and copy to your CAS server,and open Exhange Management Console->Organization Configuration->Hub Transport->Edge Subscription
5. Right Click and remove
6. click New Edge Subscriptions.
7. in active directory site choose Default-Fist-Site-Name and press OK
8. in Column subscription file click browse and choose newedgesubsciption.xml.
9. Click New
10. Finish.

Thanks.