Outlook/Echange "RPC over HTTP" behind HTTP Proxy

[OutLawTorn]

Hi All,

 

We're trying to connect an Outlook client to an exchange server via an RPC over HTTP connection, however it fails due to the HTTP proxy needing authentication (which Outlook and Office in general doesn't let you enter)...

 

One of my colleagues managed to get it working, but it required adding the http proxy authentication at a packet level (which isn't really practical). Has anyone else come across this, and have a solution?

 

We also are going to try running a local proxy and trying to tunnel through the http proxy (depending how user-friendly that solution can be)....

 

Cheers

[sukh]

Exch version? OLK Client?

[OutLawTorn]

SBS 2011 (Exchange 2010) and Outlook 2010...

[sukh]

What authentication did you set.

Did yu configure this in the Outlook profile (via mail applet)?

https://www.testexchangeconnectivity.com/ - Test OA

[OutLawTorn]

The exchange server is outside the school network and from a home internet connection we can connect fine so its working at the exchange end. The issue is that most of the sites we work at are government schools which have an http proxy (with authentication) in place, which doesn't allow the exchange/outlook traffic through...

 

~~Edit~~

I've tried using TORBrowser to setup a tunneled connection, set IE to use that for its proxy and then tried outlook (which presumably would use the system settings) and it doesn't establish a connection that way....

Edited March 16, 2012 by OutLawTorn

[sukh]

Right I see your issue now.

 

Either they have to allow through or it wont really work.

 

OA uses 443, so I assume they have blocked to that Exch server?

 

What if at this school you try to the OWA namespace, does that work?