We started experiencing problems receiving mail from a specific domain. When we receive (most) mail from senders in that domain and open the email in Outlook (2010 or 2007) the message body is blank. However, we can see the message body if the email is opened on a blackberry device.
Related Issue: Previously, we had a problem seeing the attachment icon when an email was sent from that domain. Again, the problem was only apparent when viewing the email in outlook but it worked fine when viewing it on a blackberry. I created a transport rule to reformat the MIME content type of all mail from their domain to multipart/mixed from multipart/related and i believe it helped.
I am not an Exchange expert - any advice would be helpful. Thank you