I have a user that is unable to set their Out Of Office (OOO) when they are connected using Outlook Anywhere (RPC over HTTPS). The environment is setup as follows:
(2) Exchange servers,
1 - CAS / Transport role
1 - Mailbox only role
AUTODISCOVER works correctly with a signed certificate from Go-Daddy.
OOO set via OWA works fine.
OOO set from within the network works fine.
NOTE: RPC over HTTP is set using NTLM, not BASIC authentication.
Users are connecting through the CAS server using HTTPS only, and Outlook Anywhere does work fine, as does the downloaded address book and other services while connected through Outlook Anywhere.
The error that the user gets is: Out of office settings could not be displayed because the server is unavailable.