Two things -
1. Have you paid for tech support and attempted to contact them?
2. Try creating a very simple report - just the URAR form, sign it digitally and then print it to adobe acrobat (its an option on the print, down at the lower right), save it to "my documents" file and then create an e-mail to yourself (just like a regular e-mail to anyone else) and attach the file (using the attachment option in e-mail) that you have created. This should go through, because its not having to bounce off of the wintotal server.
I know before I had broadband internet access I could not send an e-mail through that had the size file that most of my appraisals are.
If you have any further questions, you can e-mail me directly for futher help.
Good luck.
Liz S.