I have an iPhone 3G and use a Microsoft Exchange Server for office email. I have used this successfully for the past 18 months, but two weeks ago started having trouble getting email to appear on my phone. I can use Safari to see the email over the web and the read email will then appear on my phone. In addition, if I am logged in to the network on my desktop and I have Outlook open, my email syncs perfectly with my phone even if the mail is unread. I have asked our IT guy to help, but I am the lone iPhone in a sea of BlackBerries so he just keeps telling me that he isn't sure how to fix it. It seems my settings are ok or the phone wouldn't sync when I am logged in. I am still using 3.1.3. I love my iPhone and don't want to go to a BB so I need to get this issue resolved. A phone upgrade is still a few months away. I see lots of posts about gmail through exchange, but none seem to be this issue. My gmail and yahoo accounts are working perfectly. Any suggestions?