CAS Server Autodiscover

We have a single site 3 cas servers  with A10 Load balancer.

I have checked the SCP serive binding attribute for three servers:
CAS01 - https://autodisover.abc.com/autodiscover/autodiscover.xml
CAS02 - https://cas02.abc.com/autodiscover/autodiscover.xml
CAS03 - https://cas03.abc.com/autodiscover/autodiscover.xml

My question is ?

1. When internal users access outlook which server it connects through SCP object  (CAS01/CAS02/CAS03)
2. If it access CAS02 how load balancing will happen.
3. If external users access outlook will they contact DC for SCp object?

Please help me in better understanding?
LVL 2
AhmedAliShaikAsked:
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brotaCommented:
AD will choose a server at random then the computer will be sent to the url provided by the scp.
To have load balancing you need to a load balancer or NLB


External and non-domain joined users connect to autodiscover.company.com to find the find the information they do not use the SCP.
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TheGeezer2010Commented:
You assign an FQDN to the VS on you LB and register that record in DNS. You then do not need to worry about which CAS server is being hit as your LB will do that for you. You will need to set you Autodiscover records to point at the new FQDN as well.
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AhmedAliShaikAuthor Commented:
Thank you.
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