Since your question has sat unanswered for so long, I chip in with not much of a reply but the best thought I can offer. The phenomenon you describe appears to suggest your server thinks you are logged onto it although you are not - rather like getting an engaged tone on your phone instead of a dialling tone. If I were you, I would go to your e-mail server's website (assuming they have one - this may or may not be your ISP also although I have a separate ISP from e-mail service provider because I gave up on the previous ISP but kept the e-mail address) and use their Contact Us facility to get advice because this may be a form of breakdown on their side. Good luck.