From: RWT_RAY on

I have users receiving the following error, including me when trying to send
any office files(pptx, docx, xlsx) from different methods of sending out

" The messaging interface has returned an unknown error. "

Here are the methods listed (1) right-click "send to mail receipent" (2)
send as attachment through the office application itself

Here's some background information about our environment:

OS - Windows Xp SP3
Office - 2007
Exchange -2003
I am not using a PST file

Any help would be appreciated and I am happy to provide more information as