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Exchange 2013 2-node DAG.  What would cause ECP and OWA to not work when the second node is down?

Posted on 2016-07-18
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Last Modified: 2016-07-29
I have all DNS pointing to the remaining UP server: server2.contoso.com
all internal and external URLs point to mail.contoso.com

when doing a fiddler trace (while attempting to get to ECP) I see this
X-CalculatedBETarget: server1.contoso.com  How would I (or would I need to) change that?

I do get the initial splash/login page and login but nothing ever displays.  I have already tried this fix to no avail: https://support.microsoft.com/en-us/kb/2971270

Thank you.
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Question by:K B
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Simon Butler (Sembee) earned 1000 total points
ID: 41719000
You should have full functionality if the event of a DAG failover event.

Is this a split site implementation, or a single site? If split site then you need to have different URLs for each server.
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by:Alan Cox
Alan Cox earned 1000 total points
ID: 41719516
if all URLs are set the same on both servers(generally should be). with out hardware load balancer, layer 4 DNS round robin works great. 2 A records for mail.contoso.com pointing to each server IP. I do the same for autodiscover. make sure both servers are using same cert.
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