AndrewB, thanks for your reply.
I found those discussions too but those do not help.
The TMG side has been published like this:
https://host.domain.com/owa (External IP 200.100.1.1 ) = https://CAS.domain.local/owa (internal IP 10.0.0.2)
https://host.domain.com/enterprisevault (external IP 200.100.1.1) = http://EV.domain.local/enterprisevault (internal IP 10.0.0.3)
VAC desktop policy settings
owa connection = direct
OWA proxy URL = https://EV.domain.com/enterprisevault
web.config file of CAS server:
<add key="EnterpriseVault_ExternalWebAppUrl" value="https://EV.domain.com/enterprisevault"/>
<add key="EnterpriseVault_ExternalIPAddressesl" value="2 ip addresses of TMG"/>
And this works! (set like this with veritas support as we had to troubleshoot it for a while before we got it to work).
Tried those settings just changhing the ip of the EnterpriseVault_ExternalIPAddresses to 1 netscaler ip address.
This results that I see the icons in owa - can open both search and AE and can even see the list of messages but clicking a message does absolutely nothing.
Tried also with these setting mentioned in one of those links
VAC desktop policy:
owa connection = use proxy
OWA proxy URL = https://EV.domain.com/enterprisevault
web.config file of CAS server:
<add key="EnterpriseVault_UseExternalWebAppUrl" value="true"/>
<add key="EnterpriseVault_ExternalWebAppUrl" value="https://EV.domain.com/enterprisevault"/>
No change with these setting still not able to open an item.
What was interestin I tried these latest settings to the TMG side too (deleted the IP parameter and added the useexternalwebappurl setting) and I managed to get the same issue there. Everything else seem to work exept openin an item from the AE or search listing... - put back the ip values and changed the owa connection to direct and voilá it worked normally again...
why would the ip value not work for netscaler but it does work for TMG...? Any ideas?