Exchange Server 2013 Error The Domain is Invalid

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Hi,

I am trying to install Exchange server over MS Server 2012 r2. so following every steps when i am going to install exchange server 2013, at point of step 8 of 15:Mailbox Role: Transport service ... Following message get pop up.

Any idea?

Please help.

Thanks!

I didn't find the right solution from the Internet.

Reference social.technet.microsoft.com/Forums/projectserver/en-US/be606548-78a6-4325-a615-fcbb4f3a1ac6/exchange-server-2013-error-the-domain-is-invalid-property-name-domain?forum=exchangesvrdeploylegacy

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