Exchange 2010 Federating - Get-FederatedDomainProof -DomainName

Hi,

                              I am reading the following article. http://www.stevieg.org/2013/08/when-running-the-hybrid-configuration-wizard-in-exchange-2010-sp3-ur1-the-domain-proof-of-ownership-is-not-populated/

                              We are trying to Federate for Calendar and Free/Busy sharing with a different domain let's say it's called domain1.com

                              My domain name is Mydomain.com and I have a different domain called mydomain2.com that I use as an alias with different users (those users have mydomain2.com setup as their main email address) and again we want to Federate with domain1.com

                              That being said, my understanding is that I have to:

                              1.) From my HT servers I have to run the

                              Get-FederatedDomainProof -DomainName "mydomain1.com "

                              Get-FederatedDomainProof -DomainName "mydomain2.com "

                              To generate the proof

                              2.) Then I have to create a TXT entry with the proof that I have generated from Get-FederatedDomainProof -DomainName "mydomain1.com " the TXT entry has to be part of DNSZONE for mydomain1.com

                              3.) Do the same thing with mydomain2.com and create the entry for TXT entry for the DNS zone mydomain2.com

                              4.) The domain that we want to Federate with domain1.com they need to do the same within their zone.

                              Is that correct?