Exchange 2003/2010 coexistence: Outlook Anywhere test fails with RPC_S_SERVER_UNAVAILABLE error
Posted on 2011-03-20
We are running an Exchange 2003/2010 environment with one back-end EX2003 and one CAS/HUB/MBX 2010 server. I created a new mailbox on EX2010. when I run ExRCA Outlook Anywhere (RPC over HTTP) for the EX2010 mailbox user and specifiy the server settings manually, the test fails with the following error:
Attempting to ping RPC endpoint 6001 (Exchange Information Store) on server server.domain.com. The attempt to ping the endpoint failed.
The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process.
I confirmed I can telnet server from the LAN to port 6001,6002 & 6004.
Do you have any suggestions?