Active Sync Error 85010014

After installing a new sbs 2003 server and all associated services packs (ie exchange sp2 and all hot fixes), the next task was to get activesync working for the mobile devices in my organisation. Activesync 4.5 using outlook 2003 and windows mobile5 produces the error? 85010014, with no other description. I have a server sitting right next to it that works perfectly same software and setup..... ## Deliverables Happy to give full administraive server access to get this job done