Exchange 2007 migration to 2013 -coexistence- OOF settings are not available from Outlook client connected externally

Hi Guys,

We are in the middle of mailbox migration between Ex2007 to Ex2013 so now we have both Exchange server's present. It appeard that users cannot set OOF messages when they are connected outside of the company. Inside company network and through OWA they can do it without any erros, but externally they're receiving "Your automatic reply settings cannot be displayed..."

Before the migration we didn't had autodiscover entry, and everything worked well, so what happened that now we have lost access to set OOF ?

 when I type I'm receiving note that "You have created a service." and this stands for Exchange 2013 url . When I type and enter credential I am receiving also xml page so I assume that's correct ?.

On both Ex2013 and Ex2007 for Ews were updated in the following way:

Ex CAS 2007 internal and external URL points to
Ex CAS 2013 internl and external URL points to
Rob ThortonAsked:
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Can you check if your exchange 2007 users are able to get OOF settings?
what about remote domains? are you able to see remote domains in Exchange 2013 console
OOF is the functionality provided by remote domains
Rob ThortonAuthor Commented:
Either users which mailboxes are on Exchange 2007 and 2013 cannot set OOF when they are offsite, without access to corporate network. Internally inside corporate network OOF works fine, even OOF in OWA works fine.

In PS i can see
Get-RemoteDomain command
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Rob ThortonAuthor Commented:
We added entry in public Dns and OOF started to work
Ajit SinghCommented:
Glad to hear its working. Please close the thread so other can get help from this.
Rob ThortonAuthor Commented:
Thank you all for your efforts.
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