I have a similar question up elsewhere on the forums covering two issues which I initally thought were linked so apologies if you've seen this elsewhere. I've now posted separaetly as think they are distinct issues.
Basically we recently installed a BES, 4.1.6 mr 5 and one of our users who has been provided with a Blackberry has reported that he's receiving duplicates of some emails. There doesn't seem to be a pattern to why the duplicates are occuring i.e. different senders, different domains, different recipients, different subject lines etc. I've disabled all but a few rules and of those that are running they are set to stop processing once completed and don't seem to be applying to the affected messages.
We've also traced the emails and only one email is going through the exchange box so the duplication isn't happening at the senders end. Also whilst the duplicate emails are appearing in Outlook they are not appearing on the Blackberry.
Now I'm not sure what else I should be looking for, any advice would be much appreciated.
Also the rest of our setup is as follows Exchange 2003 Enterprise Edition SP2, Outlook 2003 SP3 running in non cached mode.