Hello All, I went through this a couple of months ago with my SMTP certificate. I did the show certificates command, but I don't see a certificate relating to either of these errors that has expired. If someone would be willing to walk me through completing these tasks, I would greatly appreciate it. The errors I am getting are as follows: The connection to the ADAM instance of the Edge Transport server failed with exception "The supplied credential is invalid.". This could be caused by a failure to resolve the Edge Transport server name e2k7-edge.annandale.k12.mn.local in DNS, a failure when trying to connect to port 50636 on Edge Transport server e2k7-edge.annandale.k12.mn.local, network connectivity issues, an invalid certificate, or an expired subscription. Verify the configurations of your network and server. and Microsoft Exchange couldn't connect to e2k7-edge.annandale.k12.mn.local by using credentials cn=ESRA.e2k7-edge.MSE1.1,CN=Services,CN=Configuration,CN={6D76B858-08E7-4546-BC26-CF03029A1B22}. The password hash is qXqj5V4AIyHfrKjXEw5krZobcxWAF8xttNGTIPDgKys=. An expired replication account is the cause. Resubscribe the Edge Transport server by running the New-EdgeSubscription command on both Edge Transport server e2k7-edge.annandale.k12.mn.local and this server again. You do not have to run the Remove-EdgeSubscription command. Susan Bundy Technology Coordinator

Hi, At this stage I would pay more attention to the second error. It appears that you need to create a new edge subscription. In Exchange management console > Organisation Configuration > Hub Transport > Edge Subscriptions Tab .... Are there any edge subscriptions listed here? Kind Regards GF

Hi, Is there any update or progress on this issue? Thanks

Recreate an edge subscription. Understanding Edge Subscription Credentials http://technet.microsoft.com/en-us/library/bb266959(EXCHG.80).aspx Subscribing the Edge Transport Server to the Exchange Organization http://technet.microsoft.com/en-us/library/bb125236(EXCHG.80).aspx lasse at humandata dot se, http://anewmessagehasarrived.blogspot.com