Which build/version of Exchange 2010?

And which OS version? 2012 or 2012 R2?

Seeking for your help im on my lab simulating my new exchange server 2010 installed,and i have issue encounder in my edge transport server,i used 2012 server as primary os and i install,2010 edge transport on this os,my domain is 2008 r2 server,my issue is MMC has detected as error in snapin

I have a question. If we are introducing a second Edge Server, we want to Export the Config from the First Edge Server, then Import to Second Edge Server, then create the New Edge Subscription? Would we have to create the subscription, then export & import, and then Re-create the subscription to second server? I am very confused on this matter because I have receivied conflicting answers and cannot see which way is correct.
I have followed the following TechNet article, http://technet.microsoft.com/en-us/library/aa996008(v=exchg.141).aspx
but I cannot find an answer. Thanks again and great article.

I am getting following error when I am importing clone data from one Edge Server to another…..I exported config from Edge1 and copy it to Edge2…made the name change in config file to Edge2 and import verify works fine….but real config import is failing at following stage….

Importing Edge configuration information Failed.
Reason: You cannot call a method on a null-valued expression.
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Are you sure you want to perform this action?
Removing Receive connector “EDGE02From Internet”.
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is “Y”): a

Confirm
Are you sure you want to perform this action?
Removing Send connector “To Internet”.
[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is “Y”): a
Importing Edge configuration information Failed.
Reason: You cannot call a method on a null-valued expression.

——————————————————————————-
Thanks,

JS