Originally Posted by simpsonak
Only time I ever get this error is when the Mail Server is down, or has changed TCP/IP address and BES server had an entry in hosts file.
Launch the Notes client on your BES Server and open the server in question, this will tell you if can see the server from a Notes level.
I had this error:
Unable to get address book list - will try again in 1 minute (Unable to find path to server 0x0803)
but launching the client on the server and opened the server in question and it fixed the problem as you stated