Previously in our industrial reality we had to make available to some sales people a free product to view and optionally print the drawings received by e-mail, and we did not find better than this product:
http:/ Opens a new window/en.zxt2007.com/picture-tools/minicadviewer.html
I do not think that supports a print recursive, but it is absolutely free.
Other product fee is this: http:/ Opens a new window/www.autodwg.com/pdf
I took a few attempts, but with little success (our designers yielded images with different and we had unexpected results).