Im trying to move my on-premises exchange 2003 on windows server 2003 SP3 to the cloud with Exchange Online on Office 365, and Im trying to Test my connection RPC over HTTP and I get this error.
Attempting to ping RPC endpoint 6001 (Exchange Information Store) on server mail.mydomain.com.
The attempt to ping the endpoint failed.
The RPC_S_SERVER_UNAVAILABLE error (0x6ba) was thrown by the RPC Runtime process.
I double check the registry entries, also I check with netstat that my server is listening on port 6001 but I still got the issue.
I've been looking for an answer on this for a couple of days without luck
My environment is, Exchange server 2003 running mirrored with Neverfail, I have an ISA Server 2006
I will appreciate your help