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Using RPC over HTTP without proxy?

Created: 08 Jul 2013 • Updated: 18 Jul 2013 | 10 comments
Sarah.Seftel's picture
This issue has been solved. See solution.


Is there any way to use Outlook with RPC over HTTP outside of the office, without having to install proxy server?

Is there a way to configure this using the ISA?

EV 10.0.3, ISA 2006.

Operating Systems:

Comments 10 CommentsJump to latest comment

GabeV's picture

Hi Sarah,

There is a how-to document that can help you setting up ISA for RPC over HTTP:

Hope this helps!!

“Success is not final, failure is not fatal: it is the courage to continue that counts.”–Winston Churchill

Sarah.Seftel's picture

Thanks Gabe, I've used this document already, but it is still not working... will check again to see if I missed something in there... 

Advisor's picture

Are you talking about multi EV Server environment and EV Proxy Server?

GabeV's picture

Using ISA server you do not need an Enterprise Vault proxy server because the external requests will be forwarded to the internal Enterprise Vault server. However, if you have multiple EV servers, you need to select an EV server in the "Internal site name" in ISA server. A workaround could be setup round robin on your internal DNS server for all the internal Enterprise Vault servers or if you are using Enterprise Vault cluster, using the cluster name should be sufficient.

“Success is not final, failure is not fatal: it is the courage to continue that counts.”–Winston Churchill

JesusWept3's picture

I think EV Proxy server is just a name for which EV Server you want to take the connections to
So you would just point -> http://evServer1.internal.dom/EnteprriseVault/

Setting up an EV Server just for proxying Outlook Anywhere and OWA requests seems a little aimless really

Sarah.Seftel's picture

apparently we missed the "use proxy" and it was on "direct"

after changing to use proxy, all is working fine smiley

EV_Ajay's picture

Hi Sarah,

  • Use proxy (default). With Exchange Server 2003, clients connect to the web server on the Exchange RPC proxy server. In an Exchange Server 2007 or later environment, Outlook Anywhere clients connect to the Enterprise Vault Web Access application on the Enterprise Vault proxy server.

  • Direct. Connect directly to the Enterprise Vault Web Access application on the Enterprise Vault server that hosts the archive.



Pradeep_Papnai's picture

I have given below details in other forum thread as well, it will be helpful for you for future in case of similar problems.

Required configuration of EV for External OWA &  “RPC over http/https”
For Exchange 2010/2007, if we need Enterprise vault functionality from external by OWA or outlook Anywhere (RPC over http/https), Enterprise vault host record must be published.

Details are present in "Symantec Enterprise Vault Outlook Web Access (OWA 2010 and earlier) Internal and External WebApp URLs"

If you have setup firewall other than ISA /TMG (Cisco Pix, Lynxes, watchguard,..etc). then you should have separate published host record for EV server.
Example:-            ... (External IP )              https://CAS.domain.local/owa (internal IP
(External IP )   http://EV.domain.local/enterprisevault (internal IP

If ISA is in place for link translation, we can use existing published host record of exchange, that can work for EV as well, Example:-
(External IP )              https://CAS.domain.local/owa (internal IP
(external IP               http://EV.domain.local/enterprisevault (internal IP

EV desktop policy settings for "RPC over http / https Outlook mode".

Once you configure EV host record publishing, then the changes you need to make on EV server.
Open VAC \ Expand policy \ Exchange \ select appropriate desktop policy \  Right click select ‘properties’ \ Advance \ next to ‘List setting from’ select ‘outlook’ \ make change below settings.
RPC over http restriction. = None
RPC over http connection = use proxy
RPC over http proxy URL =          

Where ""   is  External EV published Name  

Synchronize all user in EV server.