Just wondering how people test the following as part of normal installs?
- Exchange 2003 uses webmail.domain.com for OWA
- Exchange 2010 will use the same namespace
- When you install 2010 you specify the ExternalCASServerDomain as webmail.domain.com
- You then flip over the DNS records (after setting up legacy.domain.com, etc which I know about) and 2010 proxies the requests
But what about between 3 and 4? How do you test the 2010 installs and make sure all is well? In the past it has been a requirement to bring up a new namespace so you just run both alongside each other, but given that webmail.domain.com points to 2003, how can you test 2010 in the interim?
Do most people:
- Switch DNS straight over to 2010 after configuring it and test all settings with mail flowing through 2010 - if it requires a reboot so be it, OWA to 2003 will just be affected
- Install 2010 under a DNS namespace of webmailtest.domain.com, get everything configured and working under test accounts and then go around renaming all the virtual directory settings to webmail.domain.com and then flick the DNS over
How do others do the testing phase before moving the webmail.domain.com connection to be proxied by 2010?
