We have all our users and mailboxes on Exchange 2007 and I have introduced two Exchange 2013 servers in my organization and both have mailbox and CAS server installed on them.
With Exchange 2007 server, I had not modified any of the internal and external url/uri and had stayed with the defaults.
For migration most of the documents are suggesting of changing the default internal URL and Auto Discover Service internal URI values.
In my case, I want to migrate all the users and mailbox (everything that is on Exchange 2007) form 2007 to 2013 and decommission exchange 2007 completely from our organization.
I am in the phase of transferring users from Exchange 2007 to Exchange 2013 and do not want to change any settings on the existing 2007 servers.
I have created new dns entry mailx.abc.com with two IPs of both exchange 2013 and changed the Outlook Anywhere internal URL on both Exchange 2013 server to mailx.abc.com.
So by doing these, I think all existing clients will still connect to exchange 2007 and after moving their mailbox they will be connect to exchange 2013.
In short I am not redirecting or using 2013 as proxy for 2007 clients and clients whose mailbox is on exchange 2013 will directly connect to 2013 server.
Questions are, Is this the right way to migrate all the users to Exchange 2013?
Will it affect the operation of existing Exchange 2007 server?
