Don't know if this is possible, but could use some help if it is.

One domain and under that we have UK and USA
Each side has its own Exchange 2007 box.

The BES sits in USA and runs with the USA users without issue.

We want to add a user from the UK side to the BES in USA.

In Exchange I have granted the USA\BESadmin account full access to the mail file in question.

I added the user to the BES and now get the following:
<N/A> | BlackBerry Messaging Agent Blackberry Agent 2 (Application Event Log on NABES1) | 01/12/2009 17:51:16 (6FFFC39F) -> 1 user(s) failed to initialize

Thanks in advance.