Autodiscover best practice over multiple domains

Hi guys,
Domain A is a SME with Exchange 2007, recently installed 2010 and working in a mixed mode. All working well.
A company took over my company which looks after Domain A. A domain migration was done into Domain B, however the mail environment was left "as is" for now in the original domain.
So all objects are in a single domain (parent company), but we have the old domain A with the users mailboxes still.
Domain B is now about to deploy a 2010 infrastructure. Currently I use an SRV record on the split-brain internal DNS to sort out Autodiscover. I assume that when Domain B publishes their SCP into the domain that all the users sit on, my users (that have
their mail on Domain A still) will pickup the SCP and get errors....
So having everyone in domainb.com at the moment, but with a set of users having their mailboxes on domaina.org. Their SMTP is still domaina.org too. When domainb.com roles our their Ex2010 CAS and publishes an SCP how can I prevent my users from getting
tripped up.
How would / do you implement Autodiscover so different mail users in a single domain get put to their local CAS if using local domain email but gets pushed to a trusted domain if using a different email domain....?
Ideas welcome! :)
Thanks - Steve

Hi Steve,
Domain A migrated into domain B, and the legacy domain A still existing, right ?
“We have forwarders in domainb to resolve requests to domaina, and we have a stub in domaina to point back to domainb.”
How to do this ?
By the way, what’s your goal ? And do you want the users log on via new CAS server ?
Wendy Liu
TechNet Community Support

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Hi Steve,
Might be trying for solution for a long time, If i understood your question clear let me clarify you few points.
You are trying to access the bex query which is designed with the exit's in the background based on the logic and trying to call the entire dimensions and key-figures in a single connection. Then you are trying to map those data in the charts.
Steve, try to make more connections based upon the logic and split them. use the same query but split them by sales per customer group, sales per day, sales per week by making three different connections and try. You can merge the prompts from all connections.
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Do the best you can out of this scenario. :)
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Nick,
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Logically your topology is like this:
| |
| Nexus Pair |
3750-1-----------------------3750-2
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When you are talking about vPC and L3 are you talking about L3 routing protocols or just intervaln routing.
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http://bradhedlund.com/2010/12/16/routing-over-nexus-7000-vpc-peer-link-yes-and-no/
HSRP is fine.
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