Hi folks,
I receive the following error when trying to access Outlook Web Access or Exchange Control Panel from a CAS server based at a different site:
Error executing child request for /owa/auth/errorFE.aspx.
Situation
We have 2 datacentres, London and Chicago. Each Datacentre has:
2 x 2013 CAS servers
2 x 2013 Mailbox servers
We are still using Exchange 2010 SP3 for all users and we are testing Exchange 2013 on the live internal domain (we do not have a test domain yet). I have transferred my corporate 2010 mailbox to Exchange 2013 mailbox server in London. However, if I access the London CAS server https://londonServerName.domain.com/owa, everything works fine. If I access the Chicago CAS serverhttps://chicagoServerName.domain.local/owa, I receive the above error.
We never had any such issues in Exchange 2010 so I wondered if this was a known Exchange 2013 issue. The AD sites have been set-up properly. It seems we cannot access mailboxes if using a CAS server at a different site. Why doesn't this CAS proxy / forward to the correct mailbox server if at a different server?
The idea is eventually to include hardware load balancers at each datacentre and point DNS at the VIP for each datacentre but this is not in place yet. As this is in test at this stage before we migrate fully, I have pointed my localhost file to one of the London CAS servers and then I can access my emails. If I point the localhost file to the Chicago CAS server, I cannot access emails through Outlook or OWA.
Thank you for looking
Danny