I have a problem with my ipad Air iOS 7.0.4. When I receive E-Mails on my Exchange account, which contain for example a .pdf, the pdf is destroyed an can't be opend. If I forward the attachment, the attachment is still destroyed on the other recipient. I also receive my exchange mails on my PC and there are the attachments fully functional.
On my iPad I have a second GMX Imap account, and if I send a attachment to this account, I also receive it fully functional.
I already tried to delete the Exchange account from the iPad and added it newly.