We’ve made a couple of configuration changes to the mail server and restarted it. By all accounts this appears to have fixed the problem, but we’re not convinced that this is the end of the issue. We’ll post another update here within the next 48 hours, and we’ll also be sending an email to all clients about this when that update is posted.
Thanks for your patience. As mentioned previously, we’re still looking for more information from Blackberry users about this, so if there is any information you can provide to us that you think might be useful, we’re all ears.