CAS and Certifcate configuration with disjointed name space

Hello,

I am currently deploying Exchange 2010 in a 2 node 3 roles (cas, hub and mailbox) on each server in our environment for the exchange side.  I have DAGs configured and am using round robin DNS for CAS availability.  We will lbe deploying Threat Management Gateway.

We have dijointed name space which make this even more challenging.  I have the internal active directory domain as abc.com and the owa url is suppose to be email.alphabeta.com and the primary email is another domain which is abcxyz.com. And we will be adding receiving domains in the future that will have to provde internal and external CAS services (OWA, Out look anywhere and active sync) for.

I have both server configured with a 3rd party SSL certificate and I have all of the CAS components configured as well and I am having various issues from internal certificate errors to external autodiscover not working.

My 3rd party certificate is configured with the

SN=email.alphabeta.com SAN=autodiscover.alphabeta.com

My CAS Server configuration is as follows

Casarry=email.alphabeta.com

Autodiscover internal and external = email.alphabeta.com

Webservice Virtual Directory = email.alphabeta.com

OAB Virtual Directory = email.alphabeta.com

Note that we are receiving email and need to autodiscover for abczyc.com and out internal AD domain is abc.com

I know I am not going to be able to provision a certificate with the internal domain of abc.com because we do not own it so adding the servers fqdn to the certificate is out of the question right?

What should my internal and external directories configurations be in order to have autodiscover and outlook anywhere work internallly?

And for owa, active sync, auto discover and outlook anywhere be for external access.

Thanks in advance
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AGSSAsked:
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seb_ackerCommented:
If i was at your place, i would generate the following cert :

Common name = email.alphabeta.com  (always the external OWA access URL)
SANs : autodiscover.abcxyz.com , autodiscover.otherprimaryemaildomainsthatyouwilladdinthefuture

Create an internal DNS zone for each external EMAIL DNS and for Alphabeta.com
-> Set the A records you need, in there (ie: www, portal, and so on)
-> set the "email" and "autodiscover" records to point to your internal server IP

Then, launch the following commands :

Get-OABVirtualDirectory  | Set-OABVirtualDirectory -externalurl https://email.alphabeta.com  /OAB -internalurl https://email.alphabeta.com/OAB -RequireSSL:$true
Get-WebServicesVirtualDirectory | Set-WebServicesVirtualDirectory -internalurl https://email.alphabeta.com/EWS/Exchange.asmx  -externalurl https://email.alphabeta.com/EWS/Exchange.asmx -BasicAuthentication:$True

Get-CLientAccessserver | Set-ClientAccessServer -AutodiscoverServiceInternalUri https://email.alphabeta.com/autodiscover/autodiscover.xml

That will be enough :)
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Alan HardistyCo-OwnerCommented:
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.
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