Please find the logs from our Zimbra Bes attached. The zimbraMailHost on the mailnode that zcb points to. This value should match the server name used at the time of 'BlackBerryServer(Manager), yes this is correct.
Please review the logs and let me know if you are able to detect the cause.
NOTE: This server is installed using Outlook 2007. I did happen to find the following reference citing a like between it and the GAL not working, Blackberry [Lookup failed: ] in Exchange GALwhat do you guys think?