In the last 2 days when I try to send an email, it gets stuck in my outbox in Outlook 2007. It appears that this is only happening with some emails, not all, and it doesn't seem to have anything to do with the size of the email. I have tried opening these emails and resending them which has no effect. Also, when I click send/receive, the process takes much longer than usual. I also know that I have incoming emails that are not appearing in my inbox.