.local domains for SSL - exchange 2007


What are most people doing for this?  I issued a new SSL without the .local and then outlook complains and prompts users with a message that the SSL isnt completely safe/trusted etc.  I re-issued with the .local to fix, but apparently these go away after 11-1-15.
Do I just change everything in exchange so it doesn't have a .local account?  Where are all of these locations to change the default names and the autodiscover names that exchange/outlook use?  I had one client reference a different .local domain (still an email address we own) - but not sure how/why this one user had a different autodiscover name come back.
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Will SzymkowskiSenior Solution ArchitectCommented:
In this scenario you need to use Split Brain DNS setup. High level steps are below
- import the certificate into all of the Exchange servers that have the CAS roles installed
- use the Enable-ExchangeCertificate -Thumbprint xxxxxxxxxx -services "pop,imap,smtp,iis" (on all exchange servers where the cert was installed
- Modify all of your URL's for Exchange so that both internal and external have https://mail.domain.com/owa (all virtual directories)
- Open DNS Management Console
- Create a New Zone for externaldomain.com
- Create an A record in this zone for Mail pointing to your CAS server or Load Balanced IP address (if you have one)
- Get the user to restart Outlook

The Cert issue should be resolved at this point.


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