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MadCow
Honorable But Hopeless Addict

Canada
1834 Posts
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Posted - 04/19/2012 :  09:42:58 AM  Show Profile  Reply with Quote

What would you name your CAS Array?

I see people using Outlook.domain.com??

Do we have to use the same name which we have specified on our NLB as the Full Internet Name or we can use the same VIP of the NLB and give it a different name in our internal DNS?

I am not sure what name to use? I was thinking of CASArray.domain.com????

Thank you

Sunny
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"Everyone is susceptible to the notion that when you begin to do well, you begin to see no boundary lines and forget the rules apply" - Eliot Spitzer

Jazzy
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Netherlands
1932 Posts
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Posted - 04/19/2012 :  09:49:35 AM  Show Profile  Visit Jazzy's Homepage  Click to see Jazzy's MSN Messenger address  Reply with Quote
The name you use for the CAS array is the name you use for the VIP. Your MAPI clients will try to connect to this name so you want them to connect to the VIP of your load balancer. And need of course a corresponding DNS record for this name pointing to the IP.

What name you choose doesn't matter, although best practice is not to use the same DNS name for internal MAPI and external Outlook Anyhwere connections.
Jetze Mellema

Exchange specialist
Former MVP (2005-2012)
My blog: http://jetzemellema.blogspot.com (Dutch)
My company: http://www.imara-ict.nl/
Edited by - Jazzy on 04/19/2012 09:50:42 AM
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MadCow
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Canada
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Posted - 04/19/2012 :  10:48:48 AM  Show Profile  Reply with Quote

Thanks Jazzy.

In my case the VIP Name is webmail.domain.com and it already has a IP in our internal DNS. So I should be using that same name for my CAS array name.


Sunny
__________________________________________________________________________


"Everyone is susceptible to the notion that when you begin to do well, you begin to see no boundary lines and forget the rules apply" - Eliot Spitzer
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Jazzy
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Netherlands
1932 Posts
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Posted - 04/19/2012 :  1:08:04 PM  Show Profile  Visit Jazzy's Homepage  Click to see Jazzy's MSN Messenger address  Reply with Quote
And you can also create a DNS record car.refrigurator.monkey.tree and point it to the same adress, then creat the CAS array with that name. :)
Jetze Mellema

Exchange specialist
Former MVP (2005-2012)
My blog: http://jetzemellema.blogspot.com (Dutch)
My company: http://www.imara-ict.nl/
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MadCow
Honorable But Hopeless Addict

Canada
1834 Posts
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Posted - 04/19/2012 :  1:31:13 PM  Show Profile  Reply with Quote

Really??

Sunny
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"Everyone is susceptible to the notion that when you begin to do well, you begin to see no boundary lines and forget the rules apply" - Eliot Spitzer
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clarinathan
Moderator

United Kingdom
4894 Posts
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Posted - 04/20/2012 :  12:42:03 PM  Show Profile  Visit clarinathan's Homepage  Click to see clarinathan's MSN Messenger address  Reply with Quote
LOL
Yes the point is that the CAS array name should not be resolvable in external DNS.
It should not be the same as the ExternalURL field used on the virtual directories such as OWA OAB etc.

This is because if you make things the same, there will be a delay whilst outlook externally tries to connect via RPC and then fails and falls back to HTTP.

One other thing, the CAS Array name doesn't need to be on the certificate on the Exchange server as it is an RPC endpoint not an HTTP endpoint.
Cheers
Nathan
Nathan Winters - [MSFT] - Exchange Technical Specialist

Checkout my blog:
http://www.nathanwinters.co.uk
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