TMG and Outlook Anywhere (Full Version)

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wrightyi28 -> TMG and Outlook Anywhere (7.Oct.2011 2:03:19 PM)

Hi Guys,

I currently have 2 Exchange 2010 SP1 RU4 servers, they each have CAS/HT/MBX roles installed and a single DAG.

I want to be able to setup redundancy for the servers. I have been trying to setup TMG as a load balancer,

The method I have used is to enable Outlook Anywhere (which works internally) so it can use http (as RPC traffic cannot be load balanced)

Im not having much luck.

My TMG has 2 NICs (one LAN and one Internet), I have published a rule listening on the LAN and then publishing the Exchange RPC Virtual Folder.

TMG is authenticating with CAS using Kerberos Constrained Delegation so the credentials can pass from TMG to CAS. My listener is using HTTP Authentication (Integrated)

Outlook reverts to TCP/IP, if I do a connection test.

In my TMG logs I get:

12309 The server requires authorization to fulfill the request. Access to the Web server is denied. Contact the server administrator


Any ideas, or if what I am trying to do is possible would be appreciated :-)




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