Ok i have exactly the same problem here... With the default template just modified.
CF catch the site author name/email as sender.
So impossible to "reply to" on a received mail...
In addition, the tag <[your email]> setup in the form return a empty place in the sent mail if placed in the "message boddy" (the right text case)
config : http://lafermequestre.com/files/2013/12/cf1.jpg
result : http://lafermequestre.com/files/2013/12/cf2.jpg