I AM currently in mid transition from exchange 2003 to 2010 and am at the point of making the 2010 CAS server the internet facing server and would like some advice on the steps I am about to perform before doing so to make sure I am of the right thinking.
I purchased my SAN certificate with the names of mail.company.com, legacy.company.com , autodiscover.company.com and server.glb.local and have added it to the 2010 server ok but have not assigned services yet.
As our user use outlook anywhere and active sync a lot my concerns is that these services have no downtime.
My next steps were going to be to:
1. Edit the internal DNS record for mail to point to the new 2010 server.
2. Create a internal/external DNS record for legacy and point the internal one to the 2003 server and the external to the 2010 server.
3. Create a internal/external DNS record for autodiscover and point to the 2010 server.
4. Edit the rule on my ASA for incoming email to point to the new 2010 server.
Run the script on 2010 for OWA redirection (Enable-OutlookAnywhere -Server:MAIL2010 -ExternalHostName:mail.company.com -SSLOffloading $false
5. )Change the attribute on the 2003 server to 6 within ADSIedit to allow Kerberos authentication between servers for active sync
6. Export the SAN certificate off of the 2010 server and import into the 2003 server
7. Disable Outlook anywhere on the 2003 server
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