I made the files for my father and they were around 70 meg worth of pictures. We could get the files into our inbox, but our system would not resend them. I think 1 of my attachment issues was created on the forwarded message because the attached files were too large for our system to handle. I also attached a PDF to a long chain email, it did not go through. Just yesterday I forwarded 1 email with a number of attached pictures, none were received. After the most recent Outlook overhaul, we have had lots of problems with attachments simply disappearing. As such, we push and send all types of email attachment collateral - weekly, daily, hourly.
I work in the Marketing Department of a large college. I am at home right now and don't have the specs for my office computer, but wanted to throw my hat in - if for no other reason - to bump this.