I have a MS Exchange 2003 Server that is giving me issues. Sometimes when users login to OWA it shows new items in the inbox but when viewed the server gives a "page not able to display" error. When the user then connects with outlook client (2003) the emails are gone. No trace of them anywhere. ALso of note, we use Ninja Email Security for Exchange. I suspect since OWA shows new messages, that they are making it to the information store, but can't trace anything more.