Before we get to the SCP, do you change DNS entries from the internet before we do SCP?

After all this is done the last step would be to move the mailboxes?

I'm at the point of configuring my SCP and I ran a script to see what each autodiscoverserviceinternalURI is.
                              On Exchange 2010 its using the outside URL that I connect to for other services such as https://mail.domain.com/autodiscover/autodiscover.xml
                              On Exchange 2013 its using an INTERNAL URL: https://server.domain.local/autodiscover/autodiscover.xml

Should the URI be for both servers

Name                           : Exchange 2010 (Current Setting)
AutoDiscoverServiceInternalUri : https://mail.domain.com/autodiscover/autodiscover.xml

Name                           : Exchange 2013
AutoDiscoverServiceInternalUri : https://mail.domain.com/Autodiscover/Autodiscover.xml

 

Before we get to the SCP, do you change DNS entries from the internet before we do SCP?

After all this is done the last step would be to move the mailboxes?

I'm at the point of configuring my SCP and I ran a script to see what each autodiscoverserviceinternalURI is.
                              On Exchange 2010 its using the outside URL that I connect to for other services such as https://mail.domain.com/autodiscover/autodiscover.xml
                              On Exchange 2013 its using an INTERNAL URL: https://server.domain.local/autodiscover/autodiscover.xml

Should the URI be for both servers

Name                           : Exchange 2010 (Current Setting)
AutoDiscoverServiceInternalUri : https://mail.domain.com/autodiscover/autodiscover.xml

Name                           : Exchange 2013
AutoDiscoverServiceInternalUri : https://mail.domain.com/Autodiscover/Autodiscover.xml

 

Yes, best practices are they are the same and point to the 2013 CAS ( this assumes that mail.domain.com points to the 2013 CAS VIP/Load balanced name/Single Server)

In reading your statement I understand that DNS should be setup at this point to have mail.domain.com and autodiscover.domain.com point to the new 2013 Exchange server. (Note: I only have one 2013 Exchange Server with all features installed.) If this is done will the current uses on the old 2010 Exchange server still be able to use their email and then once moved to Exchange 2013 will also be able to access there emails?

In reading your statement I understand that DNS should be setup at this point to have mail.domain.com and autodiscover.domain.com point to the new 2013 Exchange server. (Note: I only have one 2013 Exchange Server with all features installed.) If this is done will the current uses on the old 2010 Exchange server still be able to use their email and then once moved to Exchange 2013 will also be able to access there emails?

Yes, assuming you do not have ambiguous URLs. If you do, then setting the URLs to the 2013 server may break things for the Exchange 2010 users.

http://blogs.technet.com/b/exchange/archive/2013/05/23/ambiguous-urls-and-their-effect-on-exchange-2010-to-exchange-2013-migrations.aspx

Also when I checked my URI on the 2010 server its listed as:

https://mail.domain.com/auto.....

Should it be listed as

https://autodiscover.domain.com/auto....?

Also when I checked my URI on the 2010 server its listed as:

https://mail.domain.com/auto.....

Should it be listed as

https://autodiscover.domain.com/auto....?

Either are valid, but most set it as autodiscover.domain.com.

Just make sure that its also on the certificate.

will do and it is on the certificate. thank you.