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Exchange 2010 and 2013 coexistence Internal and external URL

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Hi all,

been reading alot of threads about Outlook anywhere and virtual directories in co-existence exchange 2010 and 2013.

Still i dont get any smarter.

Here is scenario:

Exchange 2010

Cas1

Cas2

Mailbox1

Mailbox2

Casarray is Exchange.casarray,com ( internal dns pointed to CAS1 in exchange 2010).Seems like by default both exchange 2013 cas servers are added to the casarray.

Exchange 2013

CAS+Mailbox

Cas+Mailbox

DNS

mail.exchange.com pointing to VIP (kemp loadbalancer)

Autodiscover ( pointed to same vip ,kemp load balancer)

Outlook anywhere on all servers (2010 and 2013)

Internal ( pointing to VIP on Kemp)

External ( pointing to external IP,then it passes firewall that again passes to kemp)

Problem we are having is when migrating users from Exchange 2010 - 2013.

Users using Outlook 2010

restart of outlook and mail  works fine.
OWA works fine

Active sync fails ( need to inherit permission of users AD object),wait couple of hours then mobile can sync again.)

Users using Outlook 2013

Outlook in disconnected status,only fix is to create new profile.

OWA works fine

Active sync fails ( need to inherit permission of users AD object),wait couple of hours then mobile can sync again.)

Question is,what should be set for internal and external url (active sync,owa,ews)on 2010 and 2013 servers?

Where is the config wrong?

Thanks!


Please mark as helpful if you find my contribution useful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you. Thank you! Off2work


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